Process for the production of polynuclear aromatic polyamines
CA 1318076 C · Owner: Bayer Aktiengesellschaft · Inventors: Brockelt, Michael; Petinaux, Marcel; Knofel, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resinous composition for coating use comprising (A) a melamine resin having a monomeric content of 50% or more and a degree of etherification of 5 or more 80%, or more of the ether groups contained being methylated methylol groups, and, (B) an aliphatic or alicyclic linear structured compound, having an average molecular weight of 100 to 1000 and bearing end hydroxyl groups, in a solid weight ratio of (A) to (B) of 3/7 to 7/3. The present resinous composition is specifically useful as a resinous vehicle in a top coat paint or clear coat for automobile body, electric appliance and the like.
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 May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
- 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.