Coating composition and process for its preparation
CA 1102342 A · Owner: Nippon Oil Co. Ltd. · Inventors: Araki, Yoshihiko; Aoyama, Kazuho; Otsuki, Yutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paint comprising as a film-forming component a resinous substance obtained by reacting maleinized polybutadiene containing an unsaturated group and having a low degree of polymerization with a diamine compound containing a primary and a secondary amino group. The resinous substance can be readily rendered water-soluble, and is useful as water-base paints particularly electrodeposition paints that deposit on the cathode. In place of the maleinized polybutadiene maleinized drying oils, or semi-drying oils or maleinized petroleum resins can also be used. - 1 -
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 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
- 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.