Process for preparing a polymer dispersion

Details Process for preparing a polymer dispersion Process for preparing a polymer dispersion

2006-08-15

2006-08-15

Egwim, Kelechi C. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C289S002000, C289S002000, C289S002000, C289S002000, C289S002000, C289S002000, C289S002000

Reexamination Certificate

active

07091273

ABSTRACT:
The present invention relates to a process for preparing an aqueous polymer dispersion comprising: preparing a dispersant co-polymer of a monomer mixture (M) by polymerising the monomer mixture (M) in a reaction medium which is substantially free from organic solvents and/or substantially free from monomers which are not soluble in water, the monomer mixture (M) comprises at least one cationic vinyl monomer (m3) and at least one monomer (m4) which is tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, or a monomer of the general formula (I):wherein R1is hydrogen or methyl, R2is hydrogen or C1–C2alkyl, R3is hydrogen, C1–C4alkyl, phenyl, or benzyl, n=1 to 4, and x=1 to 50, and then, polymerising one or more water-soluble monomers (m) in an aqueous solution of a salt in the presence of the obtained dispersant polymer. The invention also relates to an aqueous polymer dispersion, use of the dispersion and a process for the production of paper.

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