Vinyl ester aqueous adhesive emulsions including allyl carbamate, their manufacture and use
CA 1115439 A · Owner: National Starch And Chemical Corporation · Inventors: Lindemann, Martin K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous adhesive emulsions based on aqueous emulsion copolymers of vinyl esters such as vinyl acetate especia-, lly with ethylene, are provided with improved solvent insolubility and adhesive characteristics in the presence of hydroxy functional protective colloid which is present during the copolymerization, by the inclusion in the copolymer of a monoethylenic carbamate, especially allyl carbamate.
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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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
- 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.