Preparation of carboxylic acid-containing monoether and polyether polyol addition products
CA 1198239 A · Owner: Arch Chemicals, Inc. · Inventors: Frentzel, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Disclosed is a process for making carboxylic acid-containing mono- and polyether polyol addition products by reacting maleic acid, fumaric acid itaconic, acid, or mixtures thereof with at least one polyhydroxycontaining mono-or polyether compound (e.g. a polyether diol or triol) in the presence of a peroxy type free radical initiator. Also disclosed are the processes of making polyurethane prepolymers and aqueous polyurethane dispersions from these carboxylic acid-containing monoand polyether polyol addition products and processes for using these dispersions in coatings, adhesives and other useful products.
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 December 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 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.