Process for making submicron stable latexes of hydrogenated bloc

Details Process for making submicron stable latexes of hydrogenated bloc Process for making submicron stable latexes of hydrogenated bloc

1996-12-30

1997-11-18

Lesmes, George F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524284, 524361, 524364, 524534, 524575, 525 89, C08J 307, C08K 501, C08L 5300

Patent

active

056888562

ABSTRACT:
This invention is a process for producing stable polymer emulsions and latexes with an average particle size of less than one micron. The polymers are hydrogenated block copolymers of conjugated dienes and vinyl aromatic hydrocarbons which may or may not contain polar functionality. The process comprises making a polymer cement of the polymer and a blend of a non-aromatic solvent for the vinyl aromatic hydrocarbon block which is immiscible with water and a non-aromatic cosolvent, emulsifying the polymer cement by adding it to an aqueous phase containing at least one surfactant and removing the solvent, cosolvent and excess water.

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