Synergistic heat stabilizer compositions containing an...

C - Chemistry – Metallurgy – 09 – K

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31/71, 400/9370

C09K 15/32 (2006.01) C08K 5/00 (2006.01) C08K 5/138 (2006.01) C08K 5/54 (2006.01) C08K 5/59 (2006.01)

Patent

CA 1146737

Abstract of the Disclosure - The combination of a conventional antimony - or bismuth-contianing heat stabilizers with certain aromatic esters or aryloxides containing boron, phosphorus, silicon, antimony, tin or zinc interacts syner- gistically to provide an unexpectedly high level of heat stability to halogen-containing polymers such as polyvinyl chloride (PVC). In addition the aromatic ester or aryloxide inhibits spontaneous degradation of the heat stabilizing component in the presence of heat and/or light.

342941

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