Copolymerized starch compositions
CA 1082829 A · Owner: A.E. Staley Manufacturing Company · Inventors: Young, Austin H.; Verbanac, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preformed, homogeneous non-linear starch copolymerizate, articles may be prepared by copolymerizing a preformed homo-, geneous mixture of water, ethylenically unsaturated starch and ethylenically unsaturated monomers to provide a labyrinth of copolymerized starch chains inter-connected with each other by the copolymerized monomeric units. The invention is particularly suitable for preparing high-binder aqueous coating com-, positions which may be applied to a variety of substrates and subsequently copolymerized with polymerization initiating systems. Improved water- and detergent-resistance may be obtained by incorporating film-forming additives cross-linking reagents, or polyunsaturated …
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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 July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
- 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.