KANSAI PAINT PATENTS
PIGMENT DISPERSING RESIN
Patent No. U.S. 6,852,817 B2
Kansai Paint Co. has received a
patent for a pigment dispersing resin
which is a copolymer of sulfonic
group-containing polymerizable
unsaturated monomer; polyoxyalkylene
chain-containing nonionic polymerizable
unsaturated monomer;
(meth)acrylic acid ester type polymerizable
monomer having two tertiary
alkyl groups per molecule and/or
(meth)acrylic acid ester type polymerizable
monomer having one tertiary
alkyl group and one secondary
hydroxyl group per molecule; and
other ethylenically unsaturated
monomer and where the copolymer is
obtained by the copolymerization of
monomers at the following proportion
on the basis of the total weight of
monomers. CW