Abs composition having improved impact strength and weather aging resistance and latex suspension process therefor
CA 1068024 A · Owner: Uniroyal · Inventors: Cornell, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a novel polybutadiene or butadiene-styrene copolymer based gum plastic having excellent impact strength and weather aging resistance and a method for its preparation. The ABS composition of the invention is a matrix of a polymer of at least on monoethylenically unsaturated monomer and a graft copolymer comprising a graftable rubber substrate which is formed from a mixture of a pre-crosslinked polybutadiene or SBR spine latex, and a low-gel elastomer which has been at least partially cross-linked during the preparation of the product. Within certain ratios of cross-linked spine to low-gel spine significant improv-, ments in impactt strength and weather aging resistance are …
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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 December 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.