Organopolysiloxane composition

Details Organopolysiloxane composition Organopolysiloxane composition

1988-03-18

1989-12-12

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 31, 528 32, 525478, C08G 7706

Patent

active

048868655

ABSTRACT:
The organopolysiloxane composition is useful as a potting or encapsulating material having a gel-like consistency for protecting electronic components even at an extremely low temperature as is encountered in the space industry. The composition is basically of the type in which crosslinks are formed by the addition reaction between silicon-bonded vinyl groups in an organopolysiloxane and silicon-bonded hydrogen atoms in an organohydrogenpolysiloxane but the outstanding cold resistance of the gel-like material obtained from the composition is imparted by incorporating specific silethylene-containing units of the unit formula OSiMe--CH.sub.2 CH.sub.2 --SiMe.sub.2 O.sub.0.5 into the organopolysiloxane in a specified molar content.

REFERENCES:
patent: 3269983 (1966-08-01), Holbrook
patent: 3423236 (1969-01-01), Quaal
patent: 3553164 (1971-01-01), Curry
patent: 3975362 (1976-08-01), Kim et al.
patent: 4374967 (1983-02-01), Brown et al.
patent: 4683278 (1987-07-01), Suzuki

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