巴西专利BR112016008353A2 polymer composition with high xs, high t suitable for bopp processing

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专利摘要:
POLYMER COMPOSITION WITH HIGH XS, HIGH TM SUITABLE RARE BOPP PROCESSINGThe copolymer of polypropylene to biaxially oriented polypropylene (BOPP) with low isotacticity, high melting temperature and low co-monomer content.
公开号:BR112016008353A2
申请号:R112016008353-9
申请日:2014-09-23
公开日:2020-09-08
发明作者:Torvald Vestberg；Johan DEFOER；Kauno Alastalo；Thomas Horill；Dietrich Gloger；Vijay Francis；Gurusamy SAKKARAIYAPPAN；Niraj DIXIT
申请人:Borealis Ag；Abu Dhabi Polymers Co. Ltd (Borouge) Llc.；
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专利说明:

[003] [003] q polypropylene is the material of choice for many applications of biaxially oriented polymer film. The polypropylene must also satisfy the properties required in the Elnal product, benx co-mo, the ptá, properties required for film production and stretching process, due to the necessary deviation properties in different products. Finally, a wide processing window for the manufacture of pellets is desirable.
[006] [006] The discovery of this invention is a pdLipropylene epoxy polymer jR-E'p) containing: (.a) an o-monomer content in the range of 0.1 to 3.0 mol%, (b) a high fusion flow rate MFR2 (23Q'Cl measured from a'cjQrdo with IS'O 1133 in the range of 1.0 to 10.0 g / 10 min, (c) a melting temperature T, , of more than 150, the "c, e (d ') uine isotacticity of 93.0%, preferably no more than 92.0%.
[007] [007] Preferably, the polypropylene (R-PE ) Body has a high soluble fraction of xylene (XCS ') in the range of 1.0 to (), 3 "by weight, more than price. from 2.0 to 8> 0% by weight, more preferably from 4.0 to 7.0% in fish, based on the weight of the polypropylene polymer (R-PP).
[010] [010] The co-mQrI $ merQ teni content has a significant influence on the properties of the polypropylene (R-PP) polymer. The expression "as gender" refers to a palimetizable unit different from propylene, D9 to the core of the present invention, the amount of co-monomer must be Ee1atively low. It is preferred that q cQpQ1polypropylene polymer (R-PP) has a co-mononomer content in the range of O, L and 3. 1% ("m mol, of reference, of Q, 1 to 1.5 μmol% in mol- , even more than pFefe'Eência, from 0, 2 to 1, OS in m.ol-, even more preferably, from 0.2 to 0.7 mol%.
[011] [011] Polypropylene (R-E'P) copolymer (R-E'P) is preferred as it comprises polymerizable co-monomers: c. Propylene.
[012] [012] C'qii 9 explained above, the present invention is directed to a smooth propylene polymer 'suitable for the efficient manufacture of' bia · xiaLm.énte oriented polypropylene (BU.E'P) . From mQd | Q to provide the necessary stiffness for the efficient manufacture of original polypropylene: biaxLalnent.e (Bopp) j, q the opiImeter of paIiprQpi, lenQ (R-PÊ ') must have a very high melting temperature . It is preferred that the polypropylene (R-PP) polymer has a temperature of more than 150 ° C, preferably more than 155 ° C, even more preferably. at least 158.0 ° C, such as at 16 ° C. In artifact, it is preferred that the copolymer of pQ1proppropyl (RP.P) has a melting temperature in the range of more than 150 , (J'C 170, O'C, most pre Eerênc · iâ, more than lS5.0'C at 168.0 ° C, even more preferably, from 158.0 ° C to 16%. 'C, such as Q in the 160 range.' 0 to 165.0 ° C.
[014] [014] The melting temperature and temperature of the temperature were measured with a polypropylene copolymer (R.-PP) which did not contain the clumping agent.
[015] [015] One of the '$ cohe-rta of the present invention is that' c) copolymer of pQ.lipropylene (R-PP}, according to 'the present invention, has a very low isotactic acid', which contributes to the And the smoothness of the polypropylene (rm. Next), it is perfect! That the polypropylene copoly (r-pe!), Has a lacticity of not more than 9%, plus of pteremeremia, not more than 92.0%, 'as 89.0 to 9'2.0%, still more preferably, more than 91.5%, such as 89, .5 to 91, 5'2, still of preference, of not more than 91.0 '%, such as 8'9.5 to 9.1.0%.
[016] [016] A characteristic feature. addition of the copolymer of pQlip.rapiLenQ (R-PE ') is the basic amount of mininse'ractions in the polymer chain, which indicates that p.olipropilea'o is preferably produced in the presence of a cat .alisad'or de Ziegl'er-Natta.
[017] [017] Preferably, the copolymer "pejipr'qpíleno '(R" pp] has 2.1 of: Equals of the eritro of equal Qú below 0.4% in Âioi, more preferably, equal or lower than 0.2% in mojl, even though it is preferably equal to or below 0.1 tnej% in moL, determined by '3c-NlqR spectrophotometry. In any way, none is particularly preferred 2.1 defects of the region, Q eritrD is detectable.
[023] [023] The polypropylene cp-olomer (R-PP) of acc) according to the present invention comprises, preferably, more than
[025] [025] The exptu "ssã0" homopQlí! TlerQ de prop'pileno "refers to a polypropylene AW that consists of at least 99.8% by mol ·, more than 99.8% by weight of polypropylene units It is preferred that the propylene levels in the polymeric material be detectable.
[026] [026] According to a lower age, the first homogeneity of the first (R-Ppl) and the second most common copolymer (R-PP2) in the last five years. and £ cg of p.lipF0 pilenQ (R-PP).
[028] [028] Regarding Mjs çQ-mcjnomeres used in the second fraction of p eopolymer of FopiLeno (R-Ê'F'2), Fêfer to Znformation: supplied for the copolymer of polypropylene (R- pp),. Therefore, the second fraction of propylene (R-PP2) is considered to comprise polymerisable and polymerizable co-monomers, for example, co-monomers
[029] [029] In a modality, the polypropylene (R-PE ') cPpolymmer comprises a first fraction of propylene h'omQpD (R-E'PI) and a second propylene (R-PP2) fraction, where the weight ratio between the first fraction of propylene homopolymer (R-Ppl) and the second fraction of propidene (R-PP2) (R-PP1) i (R-FP2)] it is in the Eaixa from 70/30 to 3Qij'0, preferably from 60/40 to 40/60.
[037] [037] Preferably, the polypropylene copolymer {R-P · PJ includes no a-nucleating agent.
[038] [038] The polypropylene (R-PE ') cup, as in the present invention can contain up to 5.0% by weight
[041] [041] Thus, it is preferable that the process for the preparation of a copolymer of pQlíprQpiLen'o (R-PP ·) comprising a first fraction of propylene homopolymer (R-PFI) and a second fraction of propylene copolymer ( R- PE'2),, whether it is a sequential pQ1ijneFizaçàQ preception, comprising, at least, two reactions] Ee5 connected in series, in which the said pr0Qe · s5a comprises the steps of: ('a) polymerization in a first propylene reactor (jR-1) dbtendo-9 is thus the first reference to propylene propylene (R-pPl),.
[043] [043] Assirn, in this case, the process consists of two polymerization reactors, this definition does not exclude the option that the overall process comprises, for example, a prepolymerization step in a prepolymerization reactor, as explained acirna. The term "consists of" is just a closing formulation, taking into account the main polymerization reactors.
[044] [044] Preferably, the first propylene homopolymer fraction (R-PPl) prepared in the first stage, i.e., step (a), has a melting flow rate MFR2 (230 ° C), as defined above. If the MFR2 fusion flow rate (230 ° C) exceeds the defined range, an increased amount of hydrogen would be required and, consequently, also a separation step to remove excess hydrogen. Without this additional separation step that would not be possible to reach the desired fusion flow rate.
[045] [045] The first reatQr (RI) is preferably a reactor of solid paste (SR) and can be any single batch feator in a single batch or one in a feehado circuit operating in two in fluid paste.
[047] [047], According to a modality, the first reactor (RI) is a stage: r of slurry (SR), preferably, a closed reactor (closed) (LR) and / or q second reactor (R-2'J is a gas-phase stirrer (GPR).
[049] [049] The temperature in the first polymerization stage, this is, step '(' a '), in the first reactor (Rl)', preferably in the Fea.tQr çjg pastà fluida (SR), taL cpmo nQ eiEcuit reactor (already closed (LR), is typically in the range of 65 '° C to 10'O ° C, preferably in the range of 70 ° C to 95 "C.
[053] [053] p'ç) second stage of pQ] li'meríization, a mixture of a polymer comprising the first fraction of the homopolymer of the pFopilenç) (R-PP11 and the second fraction of propylene copolymer IR -PP2) is tormad.a. This is done through the introduction of the particles of the first propylene fraction of the polymer (R-PPI) content ç) active catalyst dispersed in it, this is step (h) together with pFDpylene and additional co-monomem, this is step (e ') for the second polymerization stage (at 6egunIdQ FeatQr (R-2)). Iseo causes the second part of the precylpolymer (R-P'P2) to form the first propylene homopolymer fraction (R- P'P2) to form the first fraction of propylene (R- FPI). The second stage of polymerization is conducted in the second reactor (R-2).
[056] [056] The temperature in the sequence is pQlimerization stage ie that is, step (', d) in the second reactor (R-2), preferably in the gas phased reactor (gPR-l), is typical .in the range of 50 "C to 10" C, preferably: 65 "C to 90 ° C, more than perfect, from 80 ° C to 95 ° C,
[057] [057] the step in the second polymerization stage, this is, step '(d) in the reactor sequence (R-2), preferably, in the' gas phase 'reactor [GPR'-2),, It is typically in the range of ba'r at 40 bar (10Cll0 kp'a at 40QO kPãl, preferably '15 bar at 30 bar ç150'0 to 30'00 kpaÍ).
[058] [058] It may also be necessary to introduce additional hydrogen for the second polymerization stage, this is, step Ad) to control the rate and melt flow of the polymeric membrane. Hydrogen is controlled to maintain the ratio of hydrogen to propylene = constant in the fluidization gas. The real relationship depends on the category. Good results were QbLidcjs, maintaining the ratio of the range of O, 2 mollkmol to 10 mQ1 / kmol ·, preferably, from Q, 5 ml / kmoL to 5 mo'llkjnoL. hidFQgêniçj can be added to cõ'ntrQ1aE the molar mass in one! nQdQ cQnheci [dQ per se.
[060] [060] Normally, ta'X-a gives fluoride to golipropylene prepared in the first stage of polymerization. adjusted to be less than the polypropylene physis flow rate prepared in the second polymerization stage. In accordance with the present invention, it has been found that, for example, a polypropylene cup (R-FE ) With perfect properties can be obtained when. the melting flow rate of the first fraction of propylene hoKlopolymer (R-PFlj, · prepared in the first stage of polymerization (first reactor (R "l)), is adjusted to be 'r higher than the melting flow rate of the' second fraction of propylene] copolymer in RQ (R-PK1! I p.repairs in the 'second' polymerization stage ('following reactmr (R2)) Err other words, an inverse process to link the flow rates of the polymers prepared in the stages of individual polymerization can produce the groups of pQliInero with properties ap ("reEctions.
[061] [061] With reference to the pre-determined flow rates of the first fraction of the propylene homogen (R-FPI) and the subsequent fraction of the copolymer (R-PP2) which S-ãD referred to above - I062) The modality of p] rocessQ encompasses a prepolymerization (and ') arites of the pc) 1imerization in the first reactor (IR). pre-ps31imerization! Q (P) can be re-set for the first time (Rl), however, it is preferred that pre-pliming (P) occurs' in a separate reactor , as well as a pre-p5 limiter (PR) reactor. A prepolymerization reactor is of such a smaller size in terms of the first (R-lj is second) (R-2) reactor, respectively. Preferably, the reaction volume of the prepolymer reactor. The action (PR) will be between 5% and 30% of the pH of the reaction of the pHh'rea reactor (Rl). In the aforementioned prepolymerization (PR) reactor, the prepolymerization ('P ) is carried out in volume or slurry, such cow © defined µara q primeiEQ reato.r (Rl) above.
[064] [064] The dumnte pressure after poLimeFizaação 'may 3eL' in the range of 20 bar to BO bar (2'000 kPa to 80.OQ kpa), preferably, from 25 haF to 75 bar (2500 to 750.0 kPã), such eQ.mç) from 30 to 7q bar (3000 to 7'00.0 kPà). Average residency rates may vary in the range .d.e 0.1 hour at 1.5 hours, as well as from 0 ', 2 hours and 1.0 mm.
[066] [066] According to a modality, the slit of the reactor with the reaction to the individual polystyrene stages is justified in a .KtarLeiFa, so that a specific standing relationship between the first hamopol ime and that of propylene ( R-PPl} and the second fraction of propylene l-mer (R-PP2) is obtained. It is preferred that the reaction in weight is the perfect homogeneous fraction of propylene (R- PPl) and the second fraction of polypropylene polymer (R-
[067] [067] A catalyst of the type Ziegler-N'atta normally used in the present invention for the polymerization of p'KQpíleno is a catalyst of 'Ziegler-Natta of high rm'dimentQ, stereospecific'. The catalyst can be sucked on a self-supporting particulate support, that is. the catalyst is not supported on an ext.e.Fn.Q. 'The especially useful single-purpose eqmpDnen'Les are those described in documents wo-A-n3l00o757, WO-A- | 03/00.'. 0754- and NQ'-A-E! M / 029112. These catalysts are solid spherical particles of spherical particles with a compact and low surface structure. In addition, these catalysts are characterized by a di tr ui un un ect in which catalytically active catalysts intensify the catalyst.
[071] [071] The solid catalyst systems especially useful (SCS) are described in documents WO-È- 2003/000751, WO-A-2003/000 "754, WO-A-2004 / (R9112 and WQ2007 / 137B53.These catalysts are solid catalyst systems (SCS ') of spherical particles with a smooth structure and low surface area of the
[012] [012] According to a preferred quality, the solid catalyst system (SCS) is prepared using the emulsion-solidification method, without any external support. The dispersed phase in the form of g, liquid particles of the emulsion Ílorma o catalisa & r, which is transformed with the solid catalyst (SCS) system, limiting the solidification step.
[075] [075] As indicated above, q solid catalyst system (SCS) also comprises an entire donor (ID). Suitable endpoints (IDs) are, among others, esters of carbon acids, such as phthalates, citrates, and succinates. Also, syrup compounds containing nitrogen or oxygen can be used. A range of conipposites, which is suitable for use as an internal donor (ID) in the method of manufacturing the catalyst described above is etheric, 9th aromatic carboxylic acid, which can be formed in situ. for the reaction of a dElor.etò of aCeBQxi] aromatic LcD or diacid chloride with a C2-ClG a.lgan'Q1 eibuol. A preferred spegic compound to be used with a donor: internò is et-2-ethyl-hexyl etalate.
[076] [076] the gQ-catali $ adQr (W) usald'g in combination with q QõmposIto of wetal of transition campreende, typically, a Qomp'ô] sttj of a1umínía of preference, a clQmpostQ of alkyls ç) cxunpQsto Lumirtio is preferably aluminum triaLquil, such as trijnetil.aLuminínic), tríeulãluminia, tri-isobutyl aluminum 'Qü tri-n-octÁlalüMnio. In addition, aluminum alumina can also be used in aluminum alkyl, such as aluminum diethyl chloride: • dimethyl aluminum chloride and aluminum [quic1or.et:Q] etiLalumíMõõ. The .c (> - catalyst (Co) can also be a mix of two Dü plus of the comp'os'to "above meneiDnadQs.
[078] [078] In accjrçto there is a modiLity of the external doMõr that çompLeende, preferably, consists of, dicielopenti] dimètõx'isilano and / or cyclohexylmethyldimetoxysilan. ç) orgamsilane compound is typically introduced, in order to maintain a desired cellular relationship between aluminum and silane. Preferably, the solid cataUser system (SCS) comprises a $ ade} E (.çq) with an alurunium 'ecostost' and a doad9: L 'e'Étern'õ (.ED} in the molar ratio [Al / [ED)] in the range 3 to 800, preferably 10 to 200.
[079] [079] It has been surprisingly found that "carefully adjusting the relationship between the catalyst (C0.)" And "transition metal CM), cQ'-catalyst (CiO) and doaidD'r ' and · xEe'rrFo (EOl and doaM'r èxternò (.ED) and transition metal (tm), an eopolymer of 'po1iµr'opilem (RI P ·) with improved properties can be obtained.
[080] [080] Thus, it is preferable that the solid 'catalyzed QF' (SCS) system comprises a co-catalyzed '(Cq') .and a transition metal, ÇQ (TM) in the molar ratio of [('Co' ) / (TM ')] above' 95, preferably in the range above 95 to 250, even more preferably from 100 to 200, even more preferably between 10'0 and 150.
[083] [083] According to one modality, the eataIisad'QF só'Lido (SCS) eQ] system uses an external donor (ED) and a transition metal (TM) in: spring relation, r i . (ED ') / (. TM)] of 1.0.
[085] [085] According to another aspect, the present invention is directed to a biaxially oriented polypropylene (BOPP.) Which comprises at least 5% by weight of a polypropylene copolymer ( R-PP), as defined above, preferably. at least 70% by weight, even more preferably, at least B 5% by weight, air) most preferably at least 95% by weight. Aeord'o with a
[087] [087] The following, the extrusion process for the preparation of the polymer material and the process of orienting the polymer polymer are unreliable. more .detail ..
[091] [091] In addition, it is expected that from the stage (b) film, a highly attentive poLipFQpilenQ (.! 3OPE ) Is prepared, that is, the film is subjected to a ptocésso give e.stiramentQ, gbtehdo.-is thus a biaxially oriented polypropylene (BO'PP.).
[092] [092] Preferably, pQ-1ipFopiIerLQ. .Qrient; biaxially (BOPP), it has a relationship. Stretched towards the machine. of, by InB] no3, 3.0 and a stretch stretching in the cross direction of e, at least, 3, 0.
[097] [097] At the same time, in accordance with an aspect.etQ, the present invention is 'directed to the use of a polypropylene core (R-E'PJ, such as ciescritQ a: up, in preparation' that of a biaxializing pQlipropylene (LBOE P), as described above.
[098] [098] In what follows, the present invention is further illustrated by means of examples'.
[099] [099] The following definitions of termination terms and methods apply to the general description above of this invention including the claims, as below, unless otherwise specified. mode.
[100] [100] magljétíea-nuele resonance spectroscopy: quantitative air Inmr) used to quantify the isotacticity, regio-regularity content e. co-monopoly of polymers. The quantitative NMR specs of the l3c {IH} were recorded in the solution state using a B'ruker Advanc..and IU 400 NMR spectrometer operating at 400.15 and 100.62 M-Hz to 1h and 13C, respectively. All of the 'e'spe'ctro's were made using a 13C op.timizado of 10 mn of sterilized temperature, preheated to 125 ° C, using qnitrogen ldle for all tires. The homopolymers of pQljLptopi1Len9 of approximately 20 mg of ma'úe'rial were dissolved in 1, 2-tetracIüroetano-d2 (TCE-
[106] [106] Isotacticity has been determined. at the pentavalert level and reiked as the per'centage'm of pentãva sequences.isostatic lenses (mmmm) with respect to all pentava'lenses sequences: [mmmm]% = 100 '(mmmmlsoma of tQdQs pentavalentes)) [107], The presence of 2.1 defects in the Eoí 1M # region, due to the presence of two local locations at 17, 7 and 37f2 ppm and the presence of characteristic 8 loeals.
[110] [110] The amount of 1,2 primary propylene propylene Eo'i quantified with base in the metií region with Esã¶ iza'dâ correction for the site is included in this region not related to the primary iasertion. and for the 'primary excluded' insertion sites dest, the region: P12 = ICH3 + E'12e
[114] [114] C.orn defects in the tarnbê'm region observed '(Resconi, L., Cavallm, L., Fait ;, El., Piem'ontesí, F., Cheín.
[116] [116] Air integral regions were slightly adjusted to increase the applicability of a broader range of co-monemers.
[126] [126] They are determined by Gel Permeation Chromatoarafia (GPC), according to the following method: q average molecular weight fQw and polydispersity (N! U / Mb), et M is the cig number average maturity weight e! L is q weight m "weighted average weight measured by a method based on ISO 16014-1: 2003 and ISO IEO14-4: 2003. An instrument. W'aters Alliance GPC'V 2000, equipped with a refractive index detector and an iin'ha meter was used with 3 'x Tsk-ge'l (GMHXL-HT) columns from TosoHaas el, 2.4 "tricIgLobenz'eno {TCB, , stabilized 'with 2OCl tng / L of 2,6-Di-tert-butyl-4-methyl-'fenot) healthy at 1'45 "with a constant flow rate of 1 ml / min. 216, 5 µL of $ olyçãQ samples were injected for analysis. Q çQnjüntíQ de coÀuna Íloi calibFad'Q using. relative calibration with 19 standards (.PS) of
[132] [132] It was obtained from the registered force {.N) VêtSÍjs the drawing relation curves (X), registered during the stretching experiment. Reported are.
[133] [133] The polymers' of p'Q1iprQpi1erío dc) Examples in the invention iE1 and IE2 were produced in. üIÍlâ pilot installation: the B: orstar PF is a foot: two pèmjmleriza'çãcj eni 'two .stages, starting with one hundred pQlim.érizaçàQ in a reactox of the closing of the phase of the voLtme, followed by the p.polymerization. there is a gas phase FeaE'çjr, adjusting the parameters ccwq des.crit.o's n, to Tabe la Za. C) c · atali8adQr used in the polymerisation process' for Cj co.polímer "o de prQÊjilenò dQs E * IIV and IE2 immunity packages in the document 2010/009827 KL, pages 3C) to 31 TEAL was triet.il àlumímio and the düadcu: èXterno Écji dicic1Qp'enrii'dimetoxysila-no (D'CPDMS).
[137] [137] The BOPP peels were obtained from samples of square biaxialmeute stretched lengths (x 9 cm), 750 µm thick, cut from a sample of the fused particle. The melted films were prepared by extruding the polymer in a dupted screw extruder through a slit mold and abruptly cooling the fuel on a cooling roller (CR), immersed in a bath of water (WB). The melt outlet temperature (mold temperature) was 240 ° C. Ç). cooling roll and water bath were kept at 24 ° C and 20 ° C,
¶ - 46/46 »r re8pegti.vamentg. The thickness of the fused Eoi films. of 75Q µm, reached through an opening of the 10 nm mol and the fused material that is steridized by a 13 Eator.
Simultaneously, the equibiaxic stretch of the EqÍ amiostras carried out in an I · Abortion of Kar.o 'rv extension, as provided by Brückner Masghiner] b'ai3 GmbH. The area of' c'aliMe taken 'was 7 x 7 cxn. The speed of the 400% nominal strain applied to remove the samples at 145 ° C, 1.50 ° C and 155 "C, after a preheating time of 60 seconds at the temperature of esthEamjentQ. .the drawing was 7 X 7.
Table 3: Tension at 145 ° C of a single-layered glass film biaxially IE'I IE2 CEl. CE2 CE3 CE4. Tension [.Nhm-]. 3, 59 3, 89 5, 27 3, 5.4 I 4, 9'1 i 4, 1'9 Tabe1a 4: Tension at 150 ° C of a propylene copolymer film biamatically oriented IEI IE2 CE1 CE.2 CE3 CE TESSION {Nlmm "l 2, 60 2.77 3.85 2, 52 3.53 3, 07 Table 5: Tension at 155 ° C of a biaxially oriented powder copolymer film IEI IE2 sky ÇE2 CE3 CE4 Voltage [Nhm '] 1.60 1.99 2, 88 1J79 2, 3: 9 1 ,, 9'9

权利要求:
Claims (14)
[1]
1. Polypropylene (R-PP} có'poLirüero ', secured by the fact that it has: 4 (a) urine co-InQnõmeLQ in the range | from .0.1 to 3, 0 @ in mol, based on p-aliprop.i1eno (R-PP) cDp'oííleFQ pes., (b) an MFR2 fusion flow rate (230 ° C} measured according to ÍSâ 1133 in the range of 1.0 to 10.0 gllO mixí, (cj a te [rlpLeTatuFa. fm Tm of more than 150, O'C, and (d) ürn isotáeticidaàe .de nâgais de 92., 0% ..
[2]
2. Polypr5p.ílen9 (R-PP), according to claim QCJül claim '1, çar'acLerizad'çj. due to the fact that the sol'úv'e'l fraction in cold xylene (XCS) .do '€ Qpo1ímerD of peliprQpilenQ (' R-PE ) is in the range of 1, '0 to 10.0% by weight
[3]
3. Polypropylene copolymer (RP.P), according to any one of the preceding claims, which is carbonated by the fact that copp: optimum of polypropylene ( R-E'P) has (a) a pQ.n'tQ 'd softening of vicat A below 5454.0 "C and / or (b) a nolecal weight distribution (MWD) in the range of 3 , Q to lOC).
[4]
4. Pa1iprapiienoLílnerQ (R-PP), according to any one of the exterior claims, characterized by the fact that 'çj referi.dõ copprilenoUu de poliprQpileno (R- pp') comprises two sections, tuna first fraction of hlomopQ1jénero of propi.léno (R-PE'I) and a second fE.aIção of c.op (31im0ro of propilenci '(R-PP2}, [in which the EeEe'rida peimeira-fraction de hPmopo1ímeF.Q of p'rapileno (R-PPl) differs from that given by the following fraction of the propylene propylene (R-
W h 0j w 216 ± FP2) at the melt flow rate, preferably the weight ratio between the propylene propylene fraction (R-ppl) and a second propylene fraction (R-ppl) -FP2) is in the range of 30:70 to 70t3Cl,
[5]
5. Co, pQ1imerQ from pc) lipropíl.enQ (R-.FP), from aeQF.d0 with claim 4, is characterized by pjxi i !! ato 'that: - (a) primefra EraaçãoQ de hàm0pQlim'eEQ from p £ Dpi1eIRo '(R-FPl) and the second fraction of pxopylene copolymer (R-PP2) satisify together the reaction (Ia) T yF, R. «± p, 1,),> 15 MFR (R -PP2) "'(Ia) then' MFR (R-ppj) is the MFRz (230 ° C ') i'g / l0 rnin] of the first propylene homme polymer. 'o {' R-PPl,) and mfr (E-PI 2) is the flow rate of Eusion mfr2 (230 ° C ') [g / 10 min]' of the second fr 'QopQ' propylene polymer (R-P'P2.) j./or (b.) a polypropylene cup I'R-E'P) and the second fraction of propylene copolymer (r -pp2) together satisfy the inequality (Ila): FFRR: R 'p'p')) Z 1.3 (Ila) where MFR (RE P) is the flow rate of MER2 fuse (· 230 " C)) [gÍLD min] of the copolymer of propylene (R-PP) and MFR (R'-PPl) is the melting flow rate MFR2 (2.3 ° C)) [qlIQ min] of the first homopclimerct fraction of propylene (R-Pl l).
* * ^ 3/6
M r m
[6]
6. Polypropylene (R ".PP) cup. According to claim 4 OL1 5, it is used because: (a) the co-monomer for the second pFopilerIcj copolymer fraction (R- PP2) is selected from ethylene, C4 to 82 o — oIefín'a, and the mixture5 of the same: and "lou '(b) the second fraction of. propylene copolymer (R-PPZ) has an o-monomer content in the range of more than 0., 1 to 6.0t ejrl mol,
[7]
7. Polypropylene (R-PE ) Copejimero, according to any of the indications 4 to 6, Eara.c.t.e.r.i_z.a, d.o. by the fact that the first fraction of propylene propylene (R-pPl) has a maximum melt flow rate db that "the second fraction of propylene copolymer (R-PF'2).
[8]
8 '. Process for the preparation of a polypropylene (R-PP) copolymer, according to any of the grades from 4 to 8, characterized by the thread comprising a first fraction of propylene howopc (R-PPI) and one, the second copolymer fraction of pEIDpílerIô (R— P · P2), that said process is a, prQces8e) of polymerization 3e¶uencia1- qtíe comprises, by merIQ5, dvis reactors: in that said process . It comprises the steps of: (a) 'polymerization in' a pLjjp: the reactor (R1) (al) propylene obtaining the same first fraction of propylene homopQl 'number (R-PPl), (b) transfer the said first fraction of propylene homopolymer (R-PPl) "and cQ.-monôme'rQs' unreacted to paM: go from the first reactor (Rl) to a second reactor-R (R-2),
4 * R 4/6 and + ¶ (c) supply to the Q referred to the second reactor (R-2) ('el) pr: op'i1eno .e (c2l ethylene and / or C4 to C12 a- olefin, (d) êjQlimerização in the re.feEid0 according to reàtcjr '(R-2) and in the presence of the said pLjLme.iE fraction of hIom-QpQIímero of pEopylene (R-PE'I) (dl.) propileRQ e (d2. ) ethylene, o. and / or Ca to C12 a-ole £ ine, obtaining the second-mentioned Effication of prop-yen copolymer (R-PF'2), 1 sécj, I obtain the re: t 'erido cupLímero de p'olipropi.leno' (R-PP) eonipreprehens the first Erosion of propylene homopolyme (R-PPl) and the second fraction 'of the cupLímero give prlopiLerlQ (R-PP2), where 'o'cairre olimerization. in the presence of a solid catalyzed system (SCS), the EeIfer jdQ si $ t) in a solid catalog (S: CS) cDmpreeELde: (i) a transitional method {TMlj seLE'QiDnadD from one of the groups 4 to 6 of the Periodical T'abel.a (IUPAC.),. preferably, a group 4 of the Periodic Table (IIJE'AC), more preferably Ti, (ii) a metal that is selected from one g, FupQ8 1 to 3 of the Periodic Table ( IUPAC), preferably Mg, (iái) a .dQadQr of internal electron ('ID), (iv) a catalyst (Cq), such as an aluminum compD & tD, and ÇV} jJJU donor.dor exterào (ED), such as .um tmmp "o, sto aírgam sila.no especially üFII composed of
T hidr.ocaEbiÀõxi sàlano. 1
[9]
9. Process, according to. coih the claim .8,
*% w 5 '/ 6 µ e- mw face ctm li zadô peljo fact that, c3 3st1ema of eàtalisadür sôli'do lSCS) understand ("a co-catalyst (Co) and a transition me'ta'l (TM) in the molar ratio of [('CO) j' (TM)] aciuta of 95.
[10]
10. P.rocesso, from aicoFd (j with claim B Qü 9, QaÉac] terized by the fact that the '' catalyzed '' system (scsj comprises a co-eater (Cq) and a do.ad 'or ex'trrno (ED') in the molar relation of. ['(Cq) / (ED)]' above 'and 5'Q.
[11]
11 .. Process, according to any one of claims 9 to 10, characterized by the fact that the solid catalyst system (SCS) comprises an external donor (ED) and a metal of transition (TM) in the molar relation of [Ied} 'í' (TM)] below 1'0.
[12]
12. PC1Limer-oriented film b. Dialy'almentl ", characterized by the fact that it comprises a pQlipropilerLo (R-PP) eopo1ímerk3, as defined in any one of the kings: windings prior to 7.
[13]
13. Pro'Q @ ssQ for the preparation of a pol, ipo: ropilêno õrietítãdo bíaxíâlrwente (BOPP), · according to EeclaimiQagãQ 12, which is very important because it comprises the steps of: (a). preparation of a polypropylene (R-PP) copolymer, gqij: As defined in any one of claims 1 to 7, (b) preparation of a film which comprises the polypropylene fabric (R-PP). , as defined in q ¥ alqljeF one of the Feivirldications of actions 1 to 7, (c) guide the film biaxially.
[14]
14. USE of one. glassPolypropylene (R-PP), ãCõFcÍQ c.quí any one of claims 1 to 7,
& B
W 616 µ + - + + face £ teFizadQ pek fact that it is ~ 0 tm biaxial-oriented polypeptide. MJPP) r cQnEQrme d FinigQ pa, claim 12.
m k "B 111 4- - W
SUMMARY POLYMER COMPOSITION CQM XS ALTO, TM ALTO ADEiQUADo RARE
BOPP PROCESS The polypropylene polymer for biaxially oriented palipropylene (EiOPP). I ran low isotactivity, high melting temperature and low co-mnm.erQ.

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