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AssigneePolyplastics Co., Ltd.
InventorsHaruji Murakami, Kazuhito Kobayashi, Masaru Miura, Mitsuru Yokouchi
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Long fiber-reinforced normally solid polyamide resin compositions and molded articles formed thereof include a polyamide base resin, between 5 to 80% by weight of reinforcing fibers having a length of at least 3 mm, and between 0.01 to 3% by weight of a processing aid. The processing aid is a lithium salt of a fatty acid or a metal salt of a fatty acid having 22 to 32 carbon atoms. The compositions are preferably in the form of a generally cylindrical pellet having a length of 3 to 50 mm such that the reinforcing fibers are substantially as long as the pellet in which they are incorporated, and are oriented parallel to one another along the longitudinal axis of the pellet.
A long fiber-reinforced normally solid polyamide resin composition comprising, based on the total composition weight:
In a method of making a long-fiber reinforced polyamide resin composition comprising incorporating between 5 to 80% by weight of reinforcing fibers having a length of at least 3 mm within a polyamide base resin, the improvement comprising incorporating said reinforcing fibers within said polyamide base resin in the presence of between 0.01 to 3% by weight, based on the total composition weight, of a processing aid which is at least one selected from a lithium salt of a fatty acid, and a metal salt of a fatty acid having 22 to 32 carbon atoms.
Dependencies are inferred from the claim text.