C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/278, 167/314
C07D 401/00 (2006.01) C07D 401/04 (2006.01) C08K 5/34 (2006.01) C08K 5/3435 (2006.01)
Patent
CA 1277665
SELECTED 2,2,6,6-TETRAMETHYL-4-PIPERIDINYL DERIVATIVES AND THEIR USE AS LIGHT STABILIZERS A 2,2,6,6-tetramethyl-4-piperidinyl derivative having a formula comprising: Image wherein R1 is hydrogen, an alkyl or alkylene group having 1 to about 8 carbon atoms, or cycloalkyl or aryl groups having about 5 or 6 ring carbon atoms; R2 and R3 are individually selected from hydrogen, alkyl groups having 1 to about 8 carbon atoms, and cycloalkyl and aryl groups having about 5 or 6 ring carbon atoms; R4 is selected from hydrogen and alkyl groups having 1 to about 8 carbon atoms; and n is either 1 or 2. These compounds are useful as UV light stabilizers in plastics and cosmetics (e.g. sunscreens).
486819
Gowling Lafleur Henderson Llp
Uniroyal Chemical Company Inc.
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