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...
Patent
1991-08-21
1994-12-06
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...
524766, 524858, C08K 513
Patent
active
053711386
ABSTRACT:
A poysiloxane resin composition includes a blend of silanols, colloidal silica, an ultraviolet-absorbing material, and a dye for correcting the color of a film formed from the resin composition. The silanols include a silanol from the group having the formula R.sub.w Si(OH).sub.x or R.sub.y Si(OR').sub.z where (w+x) or (y+z)=4, and R and R' are organic radicals without any crosslinking sites, silanol from the group having the formula R"Si(OR'").sub.3 where R" is a hydrogen atom or an organic radical and R"' is an organic radical containing a crosslinking site. The resin may be cured at 420.degree. F. The ultraviolet-absorbing material may be a benzophenone, a benzotriazole, or a benzothiazole. A process for forming the resin composition includes reacting the silanols and the ultraviolet-absorbing material under continuous agitation for about six hours.
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Ganbarg David
Schaefer Joy M.
Browne Robert E.
Dean Karen A.
Marquis Melvyn I.
Pisoni Jeannine M.
Tru Vue, Inc.
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