Hardener component for stoving paint binders and process for producing same
CA 1285284 C · Owner: Schmolzer, Gerhard · Inventors: Daimer, Wolfgang; Schipfer, Rudolf; Schmolzer, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention discloses crosslinking components for hydroxy and/or primary and/or secondary amine groups containing cationic rosins which can be used as binders for stoving paints particularly for cathodically depositable electrodeposition paints. The crosslinking components are obtained through partial transesterification or transamidation of oligomeric KNOEVENAGELreaction products of C-H-active esters and carbonyl compounds of the formula:, (I), wherein, X is -COOR -CN or -COCH3, R is an alkyl radical with from 1 to 8 carbon atoms R1 is a hydrogen atom or an alkyl radical and, n is a factor multiplying the unit to a molecular weight of between about 300 and about 6000. The products can …
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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 June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
- 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.