Vulcanizable halogenated elastomer compositions

Details Vulcanizable halogenated elastomer compositions Vulcanizable halogenated elastomer compositions

C - Chemistry, Metallurgy

08

K

C08K 5/46 (2006.01) C08K 13/02 (2006.01)

Patent

CA 2585694

The invention provides compositions comprising nitrogen containing chelating agents, which can be used to reduce the effects of zinc contamination on the vulcanization rates of polymercapto based cure systems for halogenated elastomers. Such chelating agents are effective at eliminating vulcanization rate inconsistencies due to zinc contamination, without inducing negative changes to the vulcanization reaction or the subsequent physical properties of the halogenated elastomer vulcanizate. The invention also provides methods of curing a halogenated elastomer using the inventive compositions, and for articles prepared from the same.

L'invention fournit des compositions comprenant des agents de chélation contenant un atome d~azote, qui peuvent être utilisées pour réduire les effets de la contamination du zinc sur les vitesses de vulcanisation de systèmes de durcissement à base de polymercapto pour des élastomères halogénés. De tels agents de chélation sont efficaces pour éliminer l~inconstance de la vitesse de vulcanisation due à la contamination du zinc, sans induire des changements négatifs en ce qui concerne la réaction de vulcanisation ou les propriétés physiques subséquentes du produit de vulcanisation d~un élastomère halogéné. L'invention décrit également des procédés de durcissement d~un élastomère halogéné utilisant les compositions de l~invention et des articles préparés à partir de celles-ci.

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