POLYMERISABLE .alpha. .beta.-MONOOLEFINICALLY UNSATURATED MONOMERS CARRYING 8-HYDROXYQUINOLYL GROUPS
CA 1055947 A · Owner: Bayer Aktiengesellschaft · Inventors: Freitag, Dieter; Vernaleken, Hugo; Idel, Karsten
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polymerisable monomers of the formula I wherein X denotes -O- or -NH-; R1 denotes -H or -CH3 and R2 denotes H- or -CH3, said monomers are obtained by acylation of 2-4-hydroxyphenyl-2-5-(8hydroxyquinolyl)-propane or 2-4-aminophenyl-2-5-(8-hydroxyquinolyl)propane with acid halides of the formula wherein R1, R2 have the meaning as in formula I and Y denotes -Cl or -Br or with acrylic anhydride, methacrylic anhydride crotonic anhydride or, maleic anhydride. The polymerisable monomers according to the invention are valuable starting products for homopolymers and copolymers having a complexforming action.
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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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.