Aqueous secondary dispersions

Details Aqueous secondary dispersions Aqueous secondary dispersions

2005-11-08

2005-11-08

Yoon, Tae H. (Department: 1714)

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...

C524S556000, C524S817000, C524S831000, C525S093000, C526S203000, C428S500000

Reexamination Certificate

active

06962953

ABSTRACT:
The present invention relates to heat and storage stable vinyl polymer polyol secondary dispersions containingA) at least one vinyl polymer resin having functional groups selected from hydroxyl, carboxyl and/or sulfonic acid groups and dispersed in a water/solvent mixture in the presence of a neutralizing agent, andB) at least one amphiphilic polymer built up from a hydrophobic and a hydrophilic segment.The invention also relates to a process for the preparation of the vinyl polymer polyol secondary dispersions by preparing vinyl polymer resin A) by polymerizing a mixture of ethylenically unsaturated monomers a) in the presence of an initiator b) in a water/solvent mixture and adding at least one amphiphilic polymer B), then at least partly neutralizing and dispersing the resulting product, optionally after the addition of a further amount of water.

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