Fire retardant stable bis(hydrocarbyl) vinyl phosphonate copolymer latices
CA 1052924 A · Owner: Stauffer Chemical Company · Inventors: Yuen, Po S.; Kraft, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Non-burning and self-extinguishing polymer compositions in the form of a latex comprising (1) a halogen-containing ethylenically unsaturated monomer, (2) a bis(hydrocarbyl) vinyl phosphonate, (3) at least one third comonomer such as a C1-C20 alkyl acrylate and/or N-methylol acrylamide. These latices are prepared by an emulsion polymerization process in which the emulsifier is a sulfosuccinamate such as tetrasodium N-(1,2-dicarboxyethyl)-N-octadecyl sulfosuccinamate or disodium N-octadecyl sulfosuccinamate. The polymer latices of this invention display a high degree of latex stability and flame retardance and are useful in a variety of applications including coatings, binders adhesives, …
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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 April 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1996.
- 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.