Improved pvc foamed compositions

Details Improved pvc foamed compositions Improved pvc foamed compositions

C - Chemistry, Metallurgy

08

L

C08L 27/06 (2006.01) C08J 9/00 (2006.01) C08J 9/04 (2006.01) C08J 9/10 (2006.01) C08K 5/58 (2006.01)

Patent

CA 2222117

The density of rigid foamed articles made by the thermal decomposition of a blowing agent in a vinyl chloride polymer is reduced by the use of an organotin mercaptoalkylcarboxylate, alone, or in combination with an organotin halide or carboxylate which activate the blowing agent. Sulfides made from said organotin mercaptoalkylcarboxylate are also superior activators of the blowing agent.

La densité d'articles expansés rigides obtenus par décomposition thermique d'un gonflant dans un polymère de chlorure de vinyle est réduite grâce à l'emploi d'un mercaptoalkylcarboxylate d'organoétain, seul ou en combinaison avec un halogénure ou un carboxylate d'organoétain, qui activent le gonflant. Les sulfures obtenus à partir de ce mercaptoalkylcarboxylate d'organoétain sont également des activateurs supérieurs du gonflant.

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