C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
402/403, 400/920
C08L 57/00 (2006.01) C09D 7/00 (2006.01)
Patent
CA 2035605
AB ? RACT OF THE DISCLOSURE This invention relates to an improved polymeric thickener containing one or more polymer stages wherein: at least one of said polymer stages is an ionically-soluble polymer, said ionically-soluble polymer being polymerized from a monomer mixture comprising; a) from about 0.1 to about 55% by weight of at least one first hydrophobic monomer, b) from about 10 to about 60% by weight (C3-C30) ethylenically-unsaturated, ionizable monomer, and c) from about 10 to about 90% by weight nonionic (C2-C30) ethylenically- unsaturated monomer, the improvement being characterized in that from about 50 to 100 weight % of said nonionic (C2-C30) ethylenically unsaturated monomer (c) is at least one second hydrophobic monomer selected from the group consisting of styrene, butyl acrylate, ethylhexyl acrylate, lauryl acrylate, stearyl acrylate,methyl methacrylate, and butyl methacrylate.
Eisenhart Eric K.
Johnson Eric A.
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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