Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1989-05-12
1990-05-01
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528354, 528359, 525 69, 525386, 524504, C08G 6100
Patent
active
049219340
ABSTRACT:
A process for producing an alkali-soluble graft polymer is disclosed. The graft polymer has at least one main chain and a plurality of side chains attached thereto. The process comprises combining at least one vinylic monomer that is capable of forming free radicals, at least one ethylenically-unsaturated carboxylic acid monomer that is capable of addition-copolymerization with the vinylic monomer in the presence of the thus-formed free radicals, and cyclic ester molecules that are capable of ring-opening in the presence of the carboxylic acid monomer, to produce a polymerizable mixture. the polymerizable mixture to subjected to a preselected temperature and pressure for causing the monomers to free-radically addition-copolymerize to form the main chain while the cyclic ester molecules graft thereon, thereby forming the side chains of the graft polymer. The process is characterized in that the main-chain and side-chain formations of the graft polymer occur substantially simultaneously.
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Bixler Kathleen J.
Scholsky Kevin M.
Bleutge John C.
Buttner David
S. C. Johnson & Son Inc.
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