摘要 |
Polymeric particles comprising a polymeric matrix and colourant distributed throughout the matrix, wherein the polymeric matrix that has been formed from a blend of monomers comprising a first monomer which is an ethylenically unsaturated ionic monomer and a second monomer which is an ethylenically unsaturated hydrophobic monomer which is capable of forming a homopolymer of glass transition temperature in excess of 50 DEG C, and in which the first monomer is a salt of a volatile counterion component, characterised in that the polymeric matrix is impermeable to the colourant. The particles obtainable by the process of the invention can be used in a variety of industrial processes, for instance in the manufacture of inks, paper and cosmetics.
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申请人 |
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED;MISTRY, KISHOR, KUMAR;SYMES, KENNETH, CHARLES;PRESTON, JANINE, ANDREA |
发明人 |
MISTRY, KISHOR, KUMAR;SYMES, KENNETH, CHARLES;PRESTON, JANINE, ANDREA |