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US 5,665,815 AGranted
Polyamide compositions exhibiting improved rheology
AssigneeSolvay (Societe Anonyme)
InventorsRobert Vankan, Philippe Degee, Robert Jerome, Philippe Teyssie
Life of this patent
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Abstract
Compositions including at least one polyamide obtained by polycondensation of meta-xylylenediamine and of a dicarboxylic acid, as well as at least one copolymer based on methyl methacrylate and on acrylic and/or methacrylic acid, the said copolymer being advantageously at least partially neutralized with an alkali metal. These compositions exhibit a high melt viscosity at low shear rate, which facilitates their processing.
Claims10
A composition, comprising:
- polyamide obtained by polycondensation of at least one xylylenediamine with at least one dicarboxylic acid, and
- at least one copolymer including methyl methacrylate, and an acid selected from the group consisting of acrylic acid, methacrylic acid, and mixtures thereof, the total quantity of acrylic and/or methacrylic acid relative to the weight of copolymer being not more than 30%, said copolymer at least partially neutralized with at least one alkali or alkaline-earth metal.
Dependencies are inferred from the claim text.