Synthetic fiber comprising acrylonitrile-polyvinylalcohol graft copolymer and styrene-acrylonitrile copolymer and process therefore
CA 1045743 A · Owner: Toray Industries, Inc. · Inventors: Kobayashi, Takuichi; Takeda, Hiromu; Oka, Koichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A synthetic fiber substantially comprising: (A) 5-40% by weight of a copolymer consisting of (a) 20-80% by weight of polyvinyl, alcohol and, (b) 80-20% by weight of acrylonitrile and, (B) 60-95% by weight of a copolymer consisting of (c) 55-95% by weight of styrene, and, (d) 5-45% by weight of acrylonitrile. This fiber is used for producing paper and has a potentially fibrillar texture. When beaten it forms synthetic, pulp having stalk fibrils and micro fibrils extending from the stalk fibrils. High-tenacity synthetic paper can be made because this synthetic pulp is self-adhesive.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 1996.
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