Polyurea-polyurethane acrylate dispersions
CA 1323121 C · Owner: Makhlouf, Joseph Michael · Inventors: Chau, Michael Ming-Kee; Makhlouf, Joseph Michael; Schappert, Raymond Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymerizable ethylenically unsaturated urea urethane polymer dispersed in a polymerizable ethylenically unsaturated compound is prepared by a process which comprises reacting a polyisocyanate, at least a portion of which is a diisocyanate with a, polyfunctional amine containing primary and/or secondary amino groups in the presence of:, (a) a polyol, at least a portion of which is a polymeric polyol containing ethylenic unsaturation and having a carbon to oxygen ratio of at least 4/1;, (b) a diluent which is an ethylenically unsaturated compound free of active hydrogens; and, (c) an active hydrogen containing polymerizable ethylenically unsaturated compound; under conditions sufficient to …
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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 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 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.