Appeal No. 2004-2233
Application No. 10/100,331
1. A cationically-charged water-insoluble polymer
latex formed from components consisting essentially of:
an ethylenically unsaturated cationic monomer;
at least one additional noncationic ethylenically
unsaturated monomer selected from the group consisting
of vinyl aromatic monomers, olefins, aliphatic
conjugated diene monomers, non-aromatic unsaturated
mono- or dicarboxylic ester monomers, monomers based on
the half ester of an unsaturated dicarboxylic acid,
unsaturated mono- or dicarboxylic acid monomers,
nitrogen-containing monomers, vinyl ester monomers, and
monomers containing ethylene unsaturation;
a component which is incorporated into said
cationic polymer latex to provide steric stabilization
to said cationic polymer latex, said component selected
from the group consisting of (a)
CH2=C(R)COO(CH2CHR’O)nR”, where R=H, C1-C4 alkyl; and
R’=H, C1-C4 alkyl, and R”=H, C1-C4 alkyl, and n=1-30;
(b) CH2C(R)COO(CH2CH2O)n(CH2CHR’O)mR”, where R=H, C1-C4
alkyl, and R’=H, C1-C4 alkyl, and R”=H, C1-C4 alkyl, n
and m each may range from 1-15; and (c)
CH2=C(R)COO(CH2CHR’O)n(CH2CH2O)mR”, where R=H, C1-C4
alkyl, and R’=H, C1-C4 alkyl and R”=H, C1-C4 alkyl, n
and m=1-15, and (d) mixtures of (a) and (b); and
optionally up to 1.0 weight percent of a nonionic
surfactant;
wherein said latex is devoid of cationic and
anionic surfactants.
The examiner relies on the following prior art references as
evidence of unpatentability:
Masuda et al. (Masuda) 4,740,546 Apr. 26, 1988
Michels et al. (Michels) 5,247,008 Sep. 21, 1993
Claims 1, 3, 4, 7, 8, 10, 11, 14, and 25 through 34 on
appeal stand rejected under 35 U.S.C. § 102(b) as anticipated by
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