Liquid polyisocyanate compositions, a process for their preparation, and their use for the preparation of flexible polyurethane foams
CA 1308514 C · Owner: Gansen, Peter · Inventors: Wolf, Klaus-Dieter; Seel, Klaus; Gansen, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo3183, LeA 26,070, LIQUID POLYISOCYANATE COMPOSITIONS A PROCESS FOR THEIR PREPARATION, AND THEIR USE FOR THE PREPARATION OF FLEXIBLE POLYURETHANE FOAMS, ABSTRACT OF THE DISCLOSURE This invention relates to liquid urethane-modified polyisocyanate compositions obtained by reaction of polyisocyanates or polyisocyanate mixtures of the diphenylmethane series containing from about 50 to about 100% by weight diisocyanatodiphenylmethane isomers with substoichiometric quantities of polyether polyol compositions having an average hydroxyl equivalent weight of about 500 to 3000 and an average hydroxyl functionality greater than about 4, optionally followed by mixing the initially formed reaction …
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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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.