Preparing coarse polymer dispersions

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

IPC codes

C08F 2/24 (2006.01) C08C 1/07 (2006.01) C08J 9/12 (2006.01)

Type

Patent

Patent number

CA 2252188

Description

In a process for preparing coarse polymer dispersions Pg where a mixture M comprising at least one conjugated diene monomer A and at least one ethylenically unsaturated comonomer B is polymerized by free-radical aqueous emulsion polymerization in the presence of an emulsifier E and with or without further additives to form a fine polymer dispersion Pf and said fine polymer dispersion Pf is agglomerated to form a coarse such dispersion Pg, the agglomeration is carried out using a combination of chemical agglomeration and pressure agglomeration; the invention also relates to such coarse polymer dispersions and their use.

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