Stable solution of a silsesquioxane or siloxane resin and a sili

Details Stable solution of a silsesquioxane or siloxane resin and a sili Stable solution of a silsesquioxane or siloxane resin and a sili

1997-10-22

2000-02-01

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524731, 427387, C08K 554

Patent

active

060204109

ABSTRACT:
Storage solutions of silsesquioxane and siloxane polymers are obtained by means of a silicon containing solvent composition. The solution has at least one polymer having a formula of [(HSiO.sub.1.5).sub.x O.sub.y ].sub.n, (HSiO.sub.1.5).sub.n, [(HSiO.sub.1.5).sub.x O.sub.y (RSiO.sub.1.5).sub.z ].sub.n, [(HSiO.sub.1.5).sub.x (RSiO.sub.1.5).sub.y ].sub.n or [(HSiO.sub.1.5).sub.x O.sub.y (RSiO.sub.1.5).sub.z ].sub.n wherein x=about 6 to about 20, y=1 to about 3, z=about 6 to about 20, n=1 to about 4,000, and each R is independently H, C.sub.1 to C.sub.8 alkyl or C.sub.6 to C.sub.12 aryl. The solvent has the formula of (CH.sub.3).sub.3 Si--O--[Si(CH.sub.3).sub.2 ].sub.a --Si(CH.sub.3).sub.3, (CH.sub.3 CH.sub.2)Si--O--[Si(CH.sub.3 CH.sub.2).sub.2 ].sub.a --SiCH.sub.3 CH.sub.2).sub.3, R.sub.3 Si--O--[SiR'.sub.2 ].sub.a --SiR.sub.3, [O--Si(CH.sub.3).sub.2 ].sub.b, [O--Si(CH.sub.3 CH.sub.2).sub.2 ].sub.b or [O--SiR'.sub.2 ].sub.n wherein a=0-5, b=3-5, and each R' is independently H or C.sub.1 to C.sub.8 alkyl.

REFERENCES:
patent: 3615272 (1971-10-01), Collins et al.
patent: 4756977 (1988-07-01), Haluska et al.
patent: 4999397 (1991-03-01), Weiss et al.
patent: 5010159 (1991-04-01), Bank et al.
patent: 5145723 (1992-09-01), Ballance et al.
patent: 5320868 (1994-06-01), Ballance et al.
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patent: 5380567 (1995-01-01), Haluska

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