Polymeric composition

专利摘要:

公开号:SU1766263A3
申请号:SU874028986
申请日:1987-02-10
公开日:1992-09-30
发明作者:Лоран КЛОД；Ростенг Поль；Лиобард Рене
申请人:Рон-Пуленк Шими (Фирма)；
IPC主号:

专利说明:

The invention relates to compositions on smallpox polyorganosiloxanes and can be used to obtain elastic substrates having a shore hardness of less than 40 and used as a matrix for stamping sheets by elastoforming.
The known polymer composition includes a, co-dihydroxyorgano-polysiloxane with a viscosity of 20-500,000 MPa – s at 25 ° C, a mineral filler, ethyl silicate, and a tin-containing catalyst.
However, this composition provides substrates with a Shore 00 hardness of less than 40 and cannot be used as a matrix for stamping sheets by elastoforming.
The closest to the technical essence of this invention is the well-known polymer composition, including diorganopolysiloxane with a viscosity of 400-3000 cPa at 25 ° C, silica filler, water and a nitrogen-containing catalyst.
However, this composition does not provide an elastic substrate with a Shore 00 hardness of less than 40 (Shore A hardness is 23-27) and cannot be used as a matrix for stamping sheets by elastoforming.
The aim of the invention is to obtain an elastic substrate having a Shore 00 hardness of less than 40 and used as a matrix for stamping sheets by elastoforming.
The goal is achieved by the fact that a polymeric composition comprising dioorganopolysiloxane. silica filler and curing catalyst, contains as a dioorganopolysiloxane a, w. - dihydroxymethylpolysiloxane, dibutyltin dilaurate as a curing catalyst, and additionally contains ethyl silicate and dioorganopolysiloxane oil with a viscosity of 50-100 MPa -c at 25 ° C in the following ratio of components, in May.
 VI
ABOUT
about
Yu
iO
I (A

with
100.00 135.00
0.35 2.00
135.00-195.00
a, w-Dihydroximethylpolysiloxane Silica
Dilaurat dibutyltin filler Ethyl silicate Diorganopolisiloxane oil
with viscosity
50-100 MPas with
25 ° С
The invention is illustrated by the following examples.
Example 1. Preparing a Ci composition, mixing:
100 ma.ch. a, w-dihydroxymethyl-poly-siloxane oil with a viscosity of 60000 MPa-s at 25 ° C;
95 parts of dimethylpolysiloxane oil, blocked at each end by a fragment (CH3) s5Uo.5 with a viscosity of 50 mP at 25 ° C;
135 ma.ch. crushed silica with grain size between 0.5 and 10 microns, containing 400 ppm of water.
To 100 ma.ch. the composition of the Sch of the above, is added 2 ma.h. ethylsilane kata - 40 and 0.35 ma.ch. dibutyltin dilaurate; Composition C2 is obtained
When pouring out to 100 parts of composition C2, 60 mas is added. dimethylpolysiloxane oil, blocked at each end by a fragment (CH3) s3Uo, 5 with a viscosity of 100 mP at 25 ° C. The set is sewn at room temperature in a cylindrical form.
Shore 00 hardness in 24 hours equals 26. Miscibility with plasticizing oil is very good and this oil does not bleed out even when used on a press.
Examples 2,3 Work according to the method of example 1 with the exception that to 100 mach. Compositions C2 are added by pouring out X parts of the same oleaginous plasticizer.
Miscibility is good and no sweating is observed. Shore 00 hardness measured 24 hours after crosslinking
The results are summarized in the table below.

权利要求:
Claims (1)
[1]
DETAILED DESCRIPTION OF THE INVENTION The polymer composition comprising dioorganopolis. Oxane, silica filler and curing catalyst is characterized in that, in order to obtain an elastic substrate having a Shore 00 hardness of less than 40, based on it, and used as a matrix for punching the sheets by elastoforming. diorganopolysiloxane, the composition contains a, a) dihydroxymethylpopylsiloxane, and dibutyltin dilaurate and
additionally contains ethyl silicate and di-organopolysiloxane oil with a viscosity of 50-100 at 25 ° С with the following ratio of components, May
a, m-dihydroxymethyl polymethyloxane
Silica filler
Dilaurate dibutyltin Ethyl silicate Diorganopolisiloxane oil
with viscosity
50-100 MPa-s at 25 ° С
10 J 535
0.35 2 00
 3500-195.00

类似技术:

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同族专利:

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公开号 | 公开日

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IN169905B|1992-01-11|

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IE59243B1|1994-01-26|

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NO870506L|1987-08-12|

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ZA87908B|1987-07-31|

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AR245752A1|1994-02-28|

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DK65587D0|1987-02-10|

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PT84265A|1987-03-01|

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KR870007985A|1987-09-23|

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IE870338L|1987-08-11|

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FR2594126B1|1988-08-05|

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IL81357A|1990-11-05|

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ES2021744B3|1991-11-16|

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JPS62253629A|1987-11-05|

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AT63071T|1991-05-15|

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IL81357D0|1987-08-31|

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NO870506D0|1987-02-10|

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PT84265B|1989-09-14|

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SK89887A3|1998-01-14|

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CA1274336A|1990-09-18|

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US4926673A|1990-05-22|

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DK65587A|1987-08-12|

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US5000029A|1991-03-19|

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CN1012620B|1991-05-15|

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EP0236243A1|1987-09-09|

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FR2594126A1|1987-08-14|

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EP0236243B1|1991-05-02|

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CN87100670A|1987-08-26|

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NO169081B|1992-01-27|

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DD260015A5|1988-09-14|

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SK278729B6|1998-01-14|

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AU7371787A|1988-12-01|

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GR3001899T3|1992-11-23|

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US4824891A|1989-04-25|

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CZ89887A3|1993-04-14|

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HU212241B|1996-04-29|

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NO169081C|1992-05-06|

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DE3769675D1|1991-06-06|

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UA11067A|1996-12-25|

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CZ279000B6|1994-11-16|

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AU599107B2|1990-07-12|

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JPH0653816B2|1994-07-20|

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BR8700575A|1987-12-08|

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HUT55425A|1991-05-28|

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DK173422B1|2000-10-02|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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FR8601993A|FR2594126B1|1986-02-11|1986-02-11|LOW HARDNESS SILICONE ELASTOMERIC SUPPORT FOR ELASTOFORMING STAMPING|

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