Metathesis polymerization of thermally oligomerized dicyclopentadiene
CA 1339234 C · Owner: Matlack, Albert Shelton · Inventors: Matlack, Albert Shelton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention teaches the preparation of crosslinked copolymers of dicyclopentadiene and higher oligomers of cyclopentadiene. The copolymers comprise about 40 to 95% by weight, based on total copolymer weight of repeating units, derived from dicyclopentadiene and about 60 to 5% by weight of repeating units derived from higher cyclopentadiene oligomers. The preparation of the copolymers of this invention does not require preparation of expensive comonomers. The higher cyclopentadiene oligomers are conveniently and inexpensively prepared by heat treatment of dicyclopentadiene. By proper selection of heat treatment conditions the desired mixture of, dicyclopentadiene and oligomers can be …
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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 August 5, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.