Light stabilization of acid-catalysed stoving lacquers of unsaturated poly-acrylics or polyesters
CA 1196444 A · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Berner, Godwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Light stabilisers which contain the group of the formula IV (IV), in which the groups R, R1, R7 and R8 represent a number of largely hydrocarbyl groups, have, compared with other polyalkylpiperidine light stabilisers particularly advantageous technological properties as stabilisers for acidcatalysed stoving lacquers based on hot-crosslinkable acrylic polyester or, alkyd resins.
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 November 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2002.
- 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.