RU1208791C - Oligoorganovinylsiloxane-base composition - Google Patents

Description

The invention relates to the field of chemical technology, specifically to the creation of compositions based on oligoorganovinyl siloxane, which can be used as sealing and insulating materials in the electronic and electrical industries.

The aim of the invention is to increase the moisture protective effect of the material while maintaining physical and mechanical parameters.

Example 1. In a beaker with a capacity of 100 ml, 50 g, (50%) of oligobinyl siloxane are mixed with a viscosity of 25,000 cSt at 25 ° C, mol.

(СН2-СН) З810 (СНз) 2810 12 -

5 | () s;

45 g (45%) of oligohydridosilane with a viscosity of 20 cSt at a mol. May. 1500 formulas

(CH3) (H) 510b, 4- - {(CH3) 25103 ° b} 1531 (CH3) s: 4 g (4%) of the compound of the formula) z51 (CH2) 25 (eH3)

and 1 g (1%) of a 1% solution of HzPtCte in isopropanol. The mixture is heated for 3 hours at. The properties of the vulcanizate are presented in Table 1.

Example 2. Analogously to example 1, 91.0 g (91.0%) of oligovinylsiloxane 1s with a viscosity of 10,000 cStp at 25 ° C, mol. Mae. 75000 formulas

CH3 () 28U {(g2H5), 5- {(CH3) 2 SiCOb.5} lOOOSi () 2CH3:

7.9 g (7.9%) oligohydridesilrkean with an Elm bone of 10 eSt at 25 ° C, mol. May. 750 formulas

(CH3) 2HSiO {(C2H5). (H), s (CH3) .4} 1051H (CH3) 2:

1 g (1%) of the compound of the formula

() 3Si (CH2) 2Si (C2H5) 20,

0.1 g (0.1%) of the catalyst of Example 1. The mixture was cured for 3 hours at 150 ° C. Material properties are not adjustable. 1.

P ROME er 3. Analogously to Example 1, 70 g (70%) of oligovinyl an oleocan with a viscosity of 40,000 cSt were mixed at 25 ° C, say, May. 200,000 formulas

() З510 {CH3 (SBH5) .8 {fcH3), 2} l500Sl () 3:

28.9 g (28.9%) of oligohydrideyloxane with a viscosity of 80 e; St, mol. May. 3000 formulas

(CH3) (SBN5) .5 GCH3 (H) .3 (CH3) 2510 o2} 2051 (CH3) s;

1 g (1%) of the compound of the formula

() З51 (СН2) 251 (СНН5) 20, and 0.1 g (0.1%) of the catalyst (See Example 1). The serpent is cured for 4 hours at 150 ° C. Material properties are presented in ta6l.1 ..

PRI me R 4. Analogously to example 1, 50 g (50%) of oligovinyl an oleocane C with a ZROOO eSt at 25 ° C, mol. May. 100,000 formulas

() З510 {СНЗ (СН2СН2СРз), 4-КСНз) b) 130-51 (СН

CH2) h;

40 g (40%) of oligohydrideideocane e with a viscosity of 20 eSt, at 25 ° С mol. May. 1000 formulas

(CH3) (CH2CH2CH3). (H) 510M (CH3) 25Uo.2} 1551 (CH3) s;

9 g (9%) of the formula

() З51 (СН2) 25 (СН2СН2-СРз),

1 g (1%) of platinum catalyst

55 example 1. The mixture is cured for 3 hours at 150 ° C.

The properties of the material are presented in Table 1.

PRI me R 5. Analogously to example 1, 70 g (70%) of oligovinyl an oleocene e with a viscosity of 25000 eSt at 25 ° C are mixed. pier May. 80,000 formulas

{CH3) 2CH2 CHSiO (CH3) 2SiO i30081cn2 (

25 g (25%) of oligohydridesiloxane with a viscosity of 20 cSt at 25 ° C, mol. May. 1200 formulas

(CH3) 2 (H) 51 (H | eM3B510 181 (HXCb3

A g (A%) of the wine-containing compound of Example 1,) of the platinum catalyst of Example 1.

A mixture of 4 hours at. Properties volkayyadts presented in table. 1.

PRI me R 8. Analogously to example 1, 70 g (704 oligovinylsiloxane with a viscosity of 25,000 0et at 25 ° C, mol. May. 80,000 formula

() З31 (С {1 Ш51 (СН3О- (CH3) 2S {0 i20oS f | H3MCH2b-8Г () З:

26 g (25%) o 1 | th "hydridosiloxane according to example 1,

4 g (4%) viiylse) of the hardening compound of Example 1

and 1 g (1%) of the platinum catalyst of Example 1. A mixture with a solid of 3 hours at. The properties of the material are shown in Table L.

Example. S 20 ml flask was charged with 12.5 g (&; 272 mol) of ethanol; g (0.00482 mol) of H2PCI6 6HzO, 6.8 g (0.0291 mol) of hexavinyl disiloxane, 5 g (0.0595 mol) of MHCO3. P012 After stopping the evolution of CO2, the mixture is mffsfrar c and kept at room temperature for 16–20 h. The resulting product is mixed with -10 ml of benzene and the benzene is distilled off at a net pressure of 15-20 mm Hg. Zanol is added to the resulting dark orange-orange liquid until the white precipitate ceases. The precipitate formed is filtered off and dried at room temperature and a residual pressure of 2-5 mm Hg. 4.8 g of catalyst are obtained, which are dissolved in tetrahydrofuran to give a 3% solution; : - -. ;. ; :;,;. ; ; /: - :; ,.

An example. Analogously to example t, 70 g (70%) of the oligovinyl siloxane of Example 6 are mixed; 25 g (25%) of the oligohydridesiloxane of Example 6; 4 g (4%) of the vinyl compound of Example 1; t g (1%) of the platinum catalyst of Example 7. The gelation of the mixture begins after 40 minutes, after 1 hour it turns into a solid elastic product. The resulting material is subjected to 40-min heat treatment at

120 ° C. The properties of the vulcanite are presented in Table 1.

L emer 9 (for comparison; analogously to Example 1, 70 g (760%) of the oligovinylsiloxane of Example 1 are mixed; 28.5 g (28.5%)

oligohydridesiloxane a as in example 1; 0.5 g (0.5%) of the vinyl compound of Example 1; 1 g (1%) of the platinum catalyst of example t. The mixture is cured for 4 hours at 150 Gi. Material properties are given in

table 1.

Example of comparison). Analogously to example 1, 60 g (60%) of oligovinyl siloxane are mixed; 29.2 g (29.2%) of oligohydridesiloxane; 10 g (10%) of an enyl compound; 0.8 g (0.8%) of platinum catalyst. The mixture was cured for 4 hours at 150 ° C. Material properties are presented in table 71.1. - Example 11 (for comparison by the prototype method). Analogously to example 3, 64 g (64. wt.%) Of polyorganasipoxane are mixed with mo. May. 60,000, with a viscosity of 15,000 cSt at 25 ° C of the formula

() 3SIO (CH3bS} 0 | «K3oSi- () s

29 g (29 Maci.%) Of organohydroxy-oxane with mol. Wt. 700, in total 10 cStri 25 C of the formula

40

(CH3) s8Uo. (H) .4-CHOS) 2510

1 g (1 wt.%) Of a 1% solution of HaPtClex x6H20 in isopropanol; 6 g (6 wt.%) Hexavini disiloxane. Received material

cure for 3 hours at 150 ° C. The properties of the volcanizate are presented in Tables 1 and 2.

As can be seen from table 1, the introduction of a vinyl-containing silicon iorgichesky compound, having the formula according to

the present invention, allows to increase the moisture protective effect of the compositions (stability of the capacity of the test MIS structures) by 2.4 times. The introduction of this compound in an amount less than that indicated in the claims leads to a decrease in the physicomechanical characteristics and the moisture protective effect.

Thus, it can be seen from the data of Tables 1 and 2 that materials based on the composition according to the invention have a higher moisture-proofing effect than the known one while maintaining other operational characteristics.

Physico-mechanical characteristics of vulcanizates

The operational characteristics of the vulcanizates

6) Authors certificate of the USSR ffe 1Q86787, class C 08 L 83 / 04.1981.

Table 1

Table 2

Formulas of the invention

COMPOSITION BASED ON OLIGOBRANOVININYL SILOXANE, oligoorganohydridesiloxane, platinum catalyst and vinyl-containing organosilicon compound, characterized in that, in order to increase the moisture-protective effect of the material based on it while maintaining physico-mechanical properties, it contains oligoxane-organic compound

R r

AO- TSlO) m (Si) n- R PPE

where R is CH3, CeHb, R is CeHs, C2H5. SRzSI2CH2; n 0-1: 1; Z 1000-1500: A - (CHzMSN2 CH) s-x - SI or (CHSL CH) s

si (CH2b Si (CH3b;

x-0-2,

as oligoorganogmdridosiloxane, a compound of the general formula

(CH3) un3-y8U

Editor

Compiled by AzhuaNetsov Techred M Morgental

Order 3190

Circulation

NGO Pbirk Rospatent 113035, MocKfid, J-36. Rauska nab ;, 4/5

Production and Publishing Combine Patent, Uzhhorod, Gagarina St., lOt

 1

(S10) a (S “0) b (SlO) k I

.СНз СНз

51Нз-у (СНз) у. where 0-1;

b 0-1; 10 k-a-l;

sH-b + k-l;

at "2 or 3;

1-10-20,

Price Mk "1y" 2. 15 and as a vinyl-containing organosilicon compound, a compound of the general formula

(CH2 CHXjSl (CH2) 2SI () 2t) SI

20) 2 (CH2) 2S CM "C" 2) 3.

where C3, CrH8. X: bH5. CF3CH2CH2 with the following components, wt.%:

Oligoorganovinylsiloxane 50.0-91.0 25: Oligoorganohydridesiloxane 7.9 - 45.0 Llatmovic acid catalyst

based on platinum 4.8 10 - 4.8 10 Vinyl-containing silicon - organic compound 1.0 - 9.0

Corrector M, Samborska