Document Type and Number:
Japanese Patent JPH0239524
Kind Code:
B2
Abstract:
A process is described for making sterically stabilised non-aqueous dispersions of polymer microparticles, in which (1) monomers including at least one crosslinking monomer are polymensed in an aqueous medium at a temperature at least 10 higher than the glass transition temperature of the polymer to be formed, in the presence of a block or graft copolymer stabilising agent containing in the molecule, as the component solvated by the aqueous medium, a polymer chain derived from a polyethylene glycol of molecular weight at least 1000, under conditions such that there is at no time present a separate monomer phase and (2) the microparticles thus obtained are transferred into a non-aqueous medium which is capable of dissolving the polyethylene glycol in question, when the latter is in the non-hydrated state, to the extent of at least 10% by weight at room temperature. The microparticles are of value for incorporation into coating compositions the main film-forming constituent of which is compatible with the polyethylene glycol-derived stabilising chains of the particles
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Inventors:
CHAARUSU BUROOMUREE
MOORISU UIRIAMU TONPUSON
MOORISU UIRIAMU TONPUSON
Application Number:
JP17148480A
Publication Date:
September 06, 1990
Filing Date:
December 06, 1980
Export Citation:
Assignee:
ICI PLC
International Classes:
C08F2/00; C08F2/08; C08F2/10; C08F2/16; C08F2/20; C08F2/44; C08F20/00; C08F20/06; C08F20/18; C08F285/00; C08F287/00; C08J3/02; C08J3/09; C09D5/00
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