Plasticizer compositions for flexible closed cell foams

Details Plasticizer compositions for flexible closed cell foams Plasticizer compositions for flexible closed cell foams

C - Chemistry, Metallurgy

08

L

C08L 67/00 (2006.01)

Patent

CA 2606192

Foamable compositions based on rigid organic polymers such as polyvinyl chloride contain as the plasticizer a blend of a) a liquid oligomeric ester of phthalic acid, at least one aliphatic dicarboxylic acid or a mixture thereof; and b) a total of at least 15 weight percent, based on total plasticizer, of at least one ester of benzoic acid and/or an alkyl-substituted benzoic acid.

Cette invention concerne des compositions expansibles à base de polymères organiques rigides tels que du chlorure de polyvinyle, contenant en tant qu'agent plastifiant un mélange composé comme suit: (a) ester oligomère liquide d'acide phtalique, au moins un acide dicarboxylique aliphatique ou un mélange de ce dernier; et (b) un total d'au moins 15% en poids, par rapport au plastifiant total, d'au moins un ester d'acide benzoïque et/ou d'un acide benzoïque substitué alkyle.

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