Two-step polymerization process and product thereof
CA 1065993 A · Owner: B.F. Goodrich Company (The) · Inventors: Yang, Hsun-Kuang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-step process comprises (A) polymerizing ethylene in the presence of a catalyst comprising (1) at least one organoaluminum compound, (2) at least one titanium tetrahalide and (3) optionally at least one, Lewis base, and (B) thereafter polymerizing isoprene in the presence of the step (A) reaction mixture. The reaction product contains polymerized therein about 0.05 to about 2.2 weight percent ethylene. The reaction product has satisfactory green strength and monomer conversion efficiency together with excellent processability.
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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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
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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.