Ethylene vinyl acetate polymers for latex caulks
CA 1340686 C · Owner: National Starch And Chemical Corporation · Inventors: Mudge, Paul R.; Walker, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Latex caulk compositions comprising 30 to 80% filler and 20 to 70% by weight of an emulsion polymer prepared for the interpolymerization of 30 to 70 parts by weight of a vinyl ester of an alkanoic acid; 15 to 60 parts of an alkyl (C2 to C8) acrylate or dialkyl (C2 to C10) maleate; 10 to 30 parts ethylene; 1 to 5 parts olefinically unsaturated carboxylic acid; 0 to 5 parts polyolefinically unsaturated monomer and 0 to 8 parts of a copolymerizable functional monomer containing hydroxyl amide or methylol, substituents, (to total 100 parts by weight).
Read the whole patent
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 27, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 27, 2016.
- 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.