Production of polymeric thickeners and their use in printing

Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...

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260DIG38, 524457, 524829, 524831, 524832, 524833, 526287, 526240, 526312, C09D 1102

Patent

active

045540187

ABSTRACT:
A thickening agent that is particularly suitable for alkaline print pastes is a water insoluble, water swellable or water swollen polymer made by reverse phase polymerization of a blend of water soluble, copolymerizable monomers in which the monomers comprise at least one ethylenically unsaturated acid having free acid groups, at least one ethylenically unsaturated acid having salt groups selected from ammonium, amine and alkali metal and at least one ethylenically unsaturated cross-linking agent, the molar proportions of the said free acid groups to the said salt groups during the polymerization being from 80:20 to 10:90.

REFERENCES:
patent: 3657175 (1972-04-01), Zimmerman
patent: 4059552 (1977-11-01), Zweigle et al.
patent: 4172066 (1979-10-01), Zweigle et al.

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