Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-04-25
1992-11-17
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
351160R, 351163, 523107, 523108, 525477, 548110, C07F 710, C07F 718, C08G 77388, G02B 104
Patent
active
051644622
ABSTRACT:
An ultraviolet light absorbing silicone composition comprising silicone base polymer and ultraviolet light absorbing component present as, or derived from, one or more ultraviolet light absorbing compounds having the following structure: ##STR1## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen; R.sup.1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R.sup.1 is other than H; R.sup.2 is selected from the group consisting of divalent hydrocarbon radicals, divalent substituted hydrocarbon radicals, oxo, divalent oxyhydrocarbon radicals and divalent substituted oxyhydrocarbon radicals; each R.sup.3 is independently selected from the group consisting of alkyl radicals, substituted alkyl radicals, alkoxy radicals, substituted alkoxy radicals, aryl radicals, substituted aryl radicals and fluoro radical; R is selected from R.sup.3, H and CH.dbd.CH.sub.2, and c is an integer in the range of 1 to about 20.
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Allergan Inc.
Hoke Veronica P.
Peterson Gordon L.
Uxa, Jr. Frank J.
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