Highly filled, propylene-ethylene copolymer compositions

Details Highly filled, propylene-ethylene copolymer compositions Highly filled, propylene-ethylene copolymer compositions

C - Chemistry, Metallurgy

08

K

C08K 3/00 (2006.01) C08K 5/56 (2006.01)

Patent

CA 2743292

Compositions comprising, based on the weight of the composition: A. Less than 50 wt% of a propylene-ethylene copolymer comprising between 8 and 20 wt% of units derived from ethylene, based on the total weight of the copolymer; B. At least 50 wt% of a filler; and C. Between greater than zero and 1 wt% of a titanate compound. The propylene-ethylene copolymer typically has a low crystallinity of between greater than zero and 35%, and the filler is typically an inorganic material such as aluminum trihydrate and/or calcium carbonate. Mono-alkoxy-titanate is representative of the titanate compounds that can be used in this invention.

Linvention concerne des compositions qui comprennent, par rapport au poids de la composition : A. moins de 50 % en poids dun copolymère propylène-éthylène comprenant une quantité comprise entre 8 et 20 % en poids dunités dérivées déthylène, par rapport au poids total du copolymère ; B. au moins 50 % en poids dune charge ; et C. une quantité comprise entre plus de zéro et 1 % en poids dun composé de titanate. Le copolymère propylène-éthylène a généralement une faible cristallinité comprise entre plus de zéro et 35 %, et la charge est généralement un matériau inorganique tel que le trihydrate daluminium et/ou le carbonate de calcium. Le mono-alcoxy-titanate est représentatif des composés de titanate qui peuvent être utilisé dans cette invention.

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