Latex of styrene polymers with terminal amino-sulfonated groups and method of making
AssigneeRhone-Poulenc Industries
InventorJean-Claude Daniel
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Abstract
A dispersion of particles having an average diameter within the range of 0.05 to 3 .mu.m formed of a homo- or copolymer of styrene having terminal ##STR1## groups and a glass transition temperature above 20.degree. C, and the use of such latex for fixing proteins.
Claims16
Styrene polymers having terminal ##STR6## groups in the form of stable latices, the polymer particles of which have an average diameter of between 0.05 and 3 .mu.m and a glass transition temperature above 20.degree. C.
A method of preparing latices of polymers having terminal ##STR7## groups, in the form of stable latices, the polymer particles of which have an average diameter of between 0.05 and 3 .mu.m and a glass transition temperature above 20.degree. C, comprising polymerizing a styrene compound, alone or in admixture, with a copolymerizable vinyl monomer in an aqueous emulsion in the presence of 0.1 to 10% by weight of a chain transfer agent, selected from the group consisting of aminophenyl disulphide and aminophenyl mercaptan at least one emulsifying agent, and a water soluble diazo initiator.
Dependencies are inferred from the claim text.