C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 323/52 (2006.01) C07F 3/06 (2006.01) C08K 5/37 (2006.01) C08K 13/02 (2006.01) C08L 27/00 (2006.01) C09K 15/32 (2006.01)
Patent
CA 2114170
A zinc mercaptoacid ester of a polyhydric alcohol or ether, carboxylate, or ether-carboxylate thereof having at least one functional hydroxy group are improved heat stabilizers for halogen-containing polymer compositions. The phenomenon known as zinc burn during processing of such compositions is eliminated. Zinc bis-thioglycolates, zinc mercaptopropionates and zinc bis-mercaptosuccinates of glycols, glycerol, glycol ethers, glycol carboxylates, and glycerol carboxylates exemplify the new class of heat stabilizers.
Divulgation d'esters, d'éthers, de carboxylates et d'éthers-carboxylates polyoliques de thioacides de zinc, ayant au moins un groupement fonctionnel hydroxyle. Ces composés sont des stabilisants thermiques améliorés pour des compositions de polymères halogénés. Le phénomène, connu sous le nom de brûlure au zinc, se déroulant au cours du traitement de telles compositions, est éliminé. Les bis-thioglycolates de zinc, les thiopropionates de zinc et les bis-thiosuccinates de zinc glycoliques, glycéroliques, d'éthers glycoliques, de carboxylates glycoliques et de carboxylates glycéroliques, sont des exemples de cette nouvelle classe de thermostabilisants.
Beekman George F.
Mesch Keith A.
Price Lionel R.
Gowling Lafleur Henderson Llp
Morton International Inc.
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