Colloid stabilized latex adhesives
CA 1291840 C · Owner: Iovine, Carmine P. · Inventors: Iovine, Carmine P.; Foreman, Paul B.; Shih, Yen-Jer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Latex adhesives having a Tg of -60 to 0°C characterized by superior rheological properties, are prepared without the use of additional thickeners from a colloid stabilized latex comprising: 65-90% by weight of the latex polymer solids of an acrylate or methacrylate ester monomer polymerized in 10-35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40 to 0°C a number average, molecular weight of 2,000 to 10,000 and comprising a) 50 to 85% by weight of a monamer of the formula: CH = ? - CO2R", where R' is hydrogen or methyl and R" is a C1-C12 straight or branched chain alkyl group;, b) 10 to 50% by weight of an ethylenically unsaturated mono- or …
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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
- 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.