Interference No. 102,922
Interference No. 103,088
polymers and mixtures thereof
or
a method for improving papermaking by
accomplishing at least one of the results of
reducing the amount of sizing required, maintaining
the sizing
content over time; improve the handling properties of a
formed paper web, including water release; improving the
physical properties of the resulting paper, including filler
retention, filler distribution, tensile strength, and surface
coefficient of friction; and improving the optical properties
of the resulting paper, including brightness, opacity, and
pigment scattering coefficient, the method comprising adding
to a papermaking furnish from about 5 to about 50 weight
percent of filler material which has been surface-treated with
from about 0./1 to about 10.0 weight percent, based on the dry
weight of filler material, of a cationic polymer, which is a
dimer of the general formula
R-CH=C--CH-R
* *
O--C=O
where R is a hydrocarbon group selected from the
group consisting of alkyl with at least 8 carbon
atoms, cycloalkyl with at least 6 carbon atoms,
aryl, aralkyl, alkaryl, which has been made cationic
by treatment with at least one of a polyamino-amide
and a polyamine polymer, both of which have been
reacted with an epoxidized halohydrin compound, to
form tertiary and quaternary amine groups on the
dimer surface.
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