Acid halide and acyllactam functional materials
CA 1249997 A · Owner: Dsm Rim Nylon Vof · Inventors: Garner, Albert Y.; Gabbert, James D.; Hedrick, Ross M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Acid halide and acyllactam functional materials, which are useful in the preparation of nylon block polymers, selected from the group consisting of those of the formulae:, and wherein, A is X or Q;, X is halogen;, Q is with Y = C3-C11 alkylene;, a is an integer equal to 1 2 or 3;, b is an integer equal to 2 or more; R is a di- or poly- valent group selected from hydrocarbon groups and hydrocarbon groups containing ether linkages; and, Z is a segment of: (1) a polyether having a minimum molecular weight of 2,000; or (2) a polyester containing polyether segment having minimum molecular weights of about 2,000. Also covered are materials wherein Z is a segment of either a hydrocarbon or a …
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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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2006.
- 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.