Process for the production of ethylene glycol
CA 1182133 A · Owner: Union Carbide Corporation · Inventors: Cropley, Jean B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous latex consisting essentially of an acid modified vinyl ester interpolymer and 0.8 parts by weight or less of a protective colloid per 100 parts by weight of interpolymer. The vinyl ester interpolymer comprises about 3 to about 7 weight percent of carboxylic acid groups supplied by an interpolymerized C4 - C10 vinylene monobasic carboxylic acid monomer. The aqueous latex is useful as an aqueous dielectric coating binder in the manufacture of electrographic recording materials which comprise a conductive paper support coated with an electrically insulating layer comprising an intimate blend of such latex and up to 500 parts of an inert finely divided pigment per 100 parts by weight …
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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 February 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 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.