C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/5021, 400/90
C08F 2/08 (2006.01) C08F 2/32 (2006.01) C08F 6/14 (2006.01) C08J 3/02 (2006.01) C08J 3/03 (2006.01) C08J 3/09 (2006.01)
Patent
CA 1273449
ABSTRACT Polymeric Compositions A polymer of an ethylenically unsaturated monomer containing a pendant hydrophobic group and, optionally, other monomers such as (meth) acrylic acid, ethyl acrylate or acrylamide is provided as a stable, substantially anhydrous dispersion containing at least 40% by weight of the polymer in a continuous phase of a non-aqueous liquid. The polymer in the dispersion generally includes acid groups and is neutralised, preferably with ammonia or a volatile amine. The dispersion can be made by reverse phase polymerisation of an aqueous blend of monomers, followed by dehydration, or by making the polymer from a water insoluble blend of monomers by oil in water emulsion polymerisation, dispersing the resultant oil in water emulsion into the non-aqueous liquid, and then dehydrating. The monomer including the hydrophobic group is preferably an allyl ether.
488796
Allen Adrian
Farrar David
Borden Ladner Gervais Llp
Ciba Specialty Chemicals Water Treatments Limited
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