C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/527 (2006.01) C08J 3/20 (2006.01) C08K 5/098 (2006.01) C08K 5/526 (2006.01) C08L 27/06 (2006.01) C09K 15/32 (2006.01)
Patent
CA 2439887
The invention relates to a liquid polymer additive composition comprising at least one phosphite ester selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites and blends thereof and approximately from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic- metal containing antioxidant stabilizer additives.
La présente invention concerne une composition liquide d'additif polymère comprenant au moins, d'une part un phosphite-ester appartenant au groupe des aryl-phosphites, alkyl-phosphites, aryl/alkyl-phosphites, bisphénol-A-phosphites, dialkylène-glycol-phosphites et polydialkylène-glycol-phosphites, pentaérytritol-phosphites, p-cumyl-phénol-phosphites et certains de leurs mélanges, et d'autre part environ 50 à 800 ppm de zinc inclusivement pour 100 parties de résine. Ce stabilisant intervient en substitution totale ou partielle d'additifs stabilisants d'antioxydants contenant des métaux toxiques.
Harr Mark E.
Jakupca Michael R.
Jennings Thomas C.
Stevenson Don R.
Dover Chemical Inc.
Dover Chemical Corporation
Gowling Lafleur Henderson Llp
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