Copolymers formed from n-hydroxyphenylmaleinimide (derivatives) and allyl compounds
CA 1293581 C · Owner: Eldin, Sameer H. · Inventors: Eldin, Sameer H.; Flury, Peter; Roth, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
3-16035/=, Copolymers formed from N-hydroxyphenylmaleinimide (derivatives) and allyl compounds, Abstract, The invention relates to copolymers consisting of 30-100 mol%, relative to the total polymer of structural, units of the formulae I and II the proportion of structural, units of the formula I relative to the proportion of I and II being 5 to 95 mol%, (I), (II), in which R1 is C1-C4-alkyl C1-C4-alkoxy or halogen, R2 is hydrogen or -COR3 and R3 is C1-C20-alkyl m is 1, 2 or 3, n is 0, 1, 2, 3 or 4 and the sum of m and n is not more than 5, and A is selected from the group of radicals consisting of halogen, cyano or structural units of the formulae III to VIII, (III), (IV), (V) (VI), (VII), …
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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 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
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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.