Low-solvent, OH-functional dispersions

Details Low-solvent, OH-functional dispersions Low-solvent, OH-functional dispersions

2007-04-03

2007-04-03

Smith, Duane (Department: 1724)

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, C524S457000, C524S458000, C524S460000, C526S073000, C526S080000, C526S319000, C526S346000, C522S170000, C522S104000, C522S150000, C522S168000, C427S487000, C427S508000, C427S512000, C427S202000

Reexamination Certificate

active

11041774

ABSTRACT:
A process for preparing copolymer dispersions that includes subjecting A) one or more vinyl monomer mixtures containing a) OH-free (meth)acrylic esters and/or vinylaromatics, b) hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, c) ionic and/or potentially ionic monomers capable of free-radical copolymerization, and d)optionally further monomers, other than the compounds of components a)–c), capable of free-radical copolymerization; to free-radical polymerization in the presence of e) compounds according to formula (I)where R1is an aliphatic, araliphatic or aromatic radical having 1 to 18 carbon atoms, R2is H or CH3, R3, R4are identical or different aliphatc radicals having 1 to 7 carbon atoms and n is 1 to 4; and subsequently dispersing the resultant copolymer B) before or after addition of a neutralizing agent C) in water. The resulting dispersions can be used to coat substrates.

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