Patents Update
AkzoNobel Coatings patents effect paint
Patent No. U.S. 7,732,017 B2
Akzo Nobel Coatings International
B.V. has been granted a patent for a
method of painting a substrate with
an emulsion paint comprised of spherical polymer particles, comprised of
the steps of applying an opaque first
coating in at least one opaque layer,
the first coating being a waterborne
emulsion of a styrene acrylic copolymer; and applying the emulsion paint
comprised of spherical polymer particles in at least one semi-opaque-layer
over the opaque first coating, wherein
the spherical polymer particles in the
emulsion paint show a particle size
distribution in which 3-10% of the
particles have a particle size between
63-90 micrometers and 25-40% have a
particle size between 40-63 micrometers; and wherein spherical particles
are pre-pigmented, the pigment content of the particles being between 3-
40% weight.
NEPTCO PATENTS
SUPERABSORBENT
WATER-RESISTANT COATINGS
Patent No. U.S. 7,491,778 B2
Neptco JV LLC has been obtained by an
article at least partially coated com-
prised of at least one surface of the arti-
cle at least partially coated with a super-
absorbent polyacrylate polymer coating
comprised of at least one water-soluble
superabsorbent polyacrylate polymer
precursor in aqueous solution, which
cures, when the coating is applied to the
at least one surface, to form a superab-
sorbent polyacrylate polymer; a viscosi-
ty-modifying agent which is a polymeric
solution or dispersion; and a film form-
ing binder in an aqueous solution com-
patible with the superabsobent polyacry-
late polymer precursor and the viscosity-
modifying agent; wherein the film form-
ing binder is selected from the group con-
sisting of polyesters, polyurethanes,
epoxies, acrylic latex, a styrene-butadi-
ene latex, and mixtures thereof and
wherein the superabsorbent polyacry-
late polymer coating absorbs from about
50 to 400 times its initial dry weight of
water when immersed in an aqueous
environment.
ANTIBACTERIAL AND ANTI-STATIC
MULTIFUNCTIONAL HARD COATING
Patent No. U.S. 7,648,762 B2
Cheil Industries, Inc. has obtained a
composition for coating on a surface
comprised of an organic conductive
filler; a photocurable resin; a pho-topolymerization initiator; an organic
solvent and a plurality of silver
nanoparticles dispersed in the composition, wherein the composition has a
viscosity of approximately 5 to 100 cps.
PPG PATENTS URETHANE POLYOL
PRECURSORS FOR COATINGS
Patent No. U.S. 7,732,555 B2
PPG Industries Ohio, Inc. has been
granted a patent for a trimeric unsymmetrical polyurethane polyol comprised
of the reaction product of a diiso-cyanate; a linear aliphatic diol having
1-6 carbon atoms and a linear polymeric diol having at least one oxycarbonyl
linkage and having from 5-20 carbon
atoms, wherein the ratio of diiso-cyanate:aliphatic diol:polymeric diol is
from about 1:1.9:0.1 to 1:1.1:0.9; wherein the polyurethane polyol consists of
hydroxyl termination.
BEHR PROCESS PATENTS
PIGMENT SPACING
Patent No. U.S. 7,727,323 B2
Behr Process Corp. has received a
patent for a process for preparing a coat-
ing composition, comprised of dispersing
a plurality of titanium dioxide particles,
pretreated with a metal oxide, with a
dispersant in a first dispersion medium;
mixing a nanoparticle metal oxide pig-
ment, pre-treated to minimize floccula-
tion, and the first dispersion medium
containing the titanium dioxide parti-
cles; and interacting the nanoparticle
pigment and the titanium dioxide parti-
cles to form an intervening dispersion of
a plurality of nanoparticle pigment sub-
stantially uniformly distributed around
the titanium dioxide particles.
IMERYS PIGMENTS
PATENTS NANOSIZE KAOLIN
Patent No. U.S. 7,727,324 B2
Imerys Pigments has been granted a
composition comprised of kaolin with
a particle size distribution wherein at
least 75% of the particles by weight
have an esd of less than 0.25 μm, and
wherein the kaolin has a mean diameter ranging from 0.1 μm to 0.15 μm.
AMERICAN THERMAL HOLDINGS
PATENTS PROTECTIVE COATING
Patent No. U.S. 7,652,087 B2
American Thermal Holdings Company
has received a patent for a coating
composition consisting essentially of
(a) approximately 30-65% by weight of
a water-soluble alkali metal silicate
binder; (b) 0.1- 50% by weight of at
least one inorganic particulate material which endothermically releases a
nonflammable gas in the presence of
heat; (c) 0.1-25% by weight of an inorganic filler for increasing the thermal
stability and resistance of the composition to wear, as compared to a composition comprised of (a), (b) and (d) in
the absence of the inorganic filler; (d)
1-25% by weight of a polymeric binder;
and (e) not more than 1% by weight of
a surfactant. CW