Polyacetal copolymers and process for production thereof
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsKazuhiko Matsuzaki, Minoru Hamada
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Abstract
A polyacetal copolymer composed of an acetal polymer portion and a thermoplastic elastomer portion having soft segments and hard segments, the second-order transition temperature of said elastomer portion being in the range of -120.degree. to 40.degree. C. A process for producing such a polyacetal copolymer is also described.
Claims18
A polyacetal copolymer composed of an acetal polymer portion and a thermoplastic elastomer portion having soft segments and hard segments, the second-order transition temperature of said elastomer portion being in the range of from -120.degree. to 40.degree. C.
A process for producing a polyacetal copolymer, which comprises homopolymerizing formaldehyde or trioxane or copolymerizing a compound selected from formaldehyde, trioxane and polyoxymethylenes with a cyclic ether in the presence of a thermoplastic elastomer having soft segments and hard segments and at least one functional group selected from hydroxyl group, carboxyl group, carboxylic anhydride groups and amino group, the second order transition temperature of said elastomer being in the range of from -120.degree. to 40.degree. C.
Dependencies are inferred from the claim text.