Process for producing abs resins
CA 1052041 A · Owner: Labofina S.A. · Inventors: Bracke, William J.I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing ABS resins by copolymerizing a mixture of a styrenic compound and an unsaturated nitrile selected from the group consisting of acrylonitrile and methacrylonitrile, in the presence of an elastomer by a, two-step process comprising a mass copolymerization step and then a suspension copolymerization step said process comprising, carrying out the mass copolymerization step in the presence of p-chlorobenzoyle peroxide as an initiator. The process allows for the preparation of ABS resins forming final products having excellent impact and tensile strength properties.
Read the whole patent
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 April 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 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
Timeline From CIPO dates
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.