C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/510
C08F 28/06 (2006.01) C08F 2/36 (2006.01) C08F 20/06 (2006.01) C11D 3/37 (2006.01) D21H 19/58 (2006.01)
Patent
CA 2004146
O.Z. 0050/40408 Abstract of the Disclosure: Pulverulent polymers of acrylic acid and methacrylic acid are prepared by poly- merizing (a) from 100 to 70 % by weight of acrylic acid, methacrylic acid or a mixture thereof and (b) from 0 to 30 % by weight of vinylsulfonic acid or an alkali metal salt thereof in a monohydric Cl-C8-alcohol, water or a mixture thereof in a pulverulent bed in the presence of a polymerization initiator and from 0.05 to 10 mol % of thiocarboxylic acid and/or a mercaptoalcohol and from 0.05 to 10 mol % of propionic acid or formic acid as regulators, each percentage being based on the monomers used in the polymerization, by maintaining the pulver- ulent state during the polymerization, removing the heat of polymerization by distilling off the solvent and recirculating the reaction mixture.
Denzinger Walter
Fischer Hermann
Hartmann Heinrich
Hennig Karl
Raubenheimer Hans-Juergen
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
Denzinger Walter
Fischer Hermann
Hartmann Heinrich
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