C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/00 (2006.01) C08K 5/3492 (2006.01) C08K 5/524 (2006.01) C08K 5/527 (2006.01) C08L 23/02 (2006.01)
Patent
CA 2091462
2091462 9204404 PCTABS00011 Only two symmetrical stabilizers in a polyolefin or copolymer thereof, provide thermooxidative (''TO'') or antioxidative (''AO'') stability. One is a phosphite or fluorophosphite; the other is a monomolecular tri-substituted triazine in which each of three chlorine atoms on a trihalo-s-triazine is substituted with a piperazinone in which the N atom in the 4-position is alkylated. Only a trace amount of phosphite, from 0.01 phr to no more than 0.1 phr, is used; additional phosphite has no noticeable effect. The trace amount of phosphite has a surprising booster effect, giving the stabilized composition excellent TO stability. Articles thermoformed from the stabilized polyolefin or copolymer thereof may be used under the hood or the dash of a vehicle, and, in containers for packaging goods, all of which articles are subject to TO degradation even if they are not subject to ultraviolet light degradation.
Kletecka George
Lai John T.
Son Pyong N.
Kletecka George
Lai John T.
Son Pyong N.
Swabey Ogilvy Renault
The B.f. Goodrich Company
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