Valspar patents low VOC coating
Patent No. U.S. 7,812,079 B2
Valspar Sourcing, Inc. has been granted
a patent for a coating composition comprised of a latex polymer comprised of a
surfactant and polymer particles emulsified or suspended in an aqueous medium;
and at least 1% by weight based on polymer solids of a coalescent having the formula: R1—(C(O)—Xr—O)n—R2,
wherein: R1 is an organic group having
at least 3 and less than 100 carbon
atoms, wherein the organic group is an
aliphatic group, alicyclic group, heterocyclic group, or combinations thereof: X
is a divalent organic group; r is 0 or 1; n
is 1 to 10; and R2 is hydrogen or an organic group having less than 100 carbon
atoms; with the proviso that R1 and R2
together do not include any aliphatic unsaturated carbon-carbon bonds; and
wherein the coalescent has a volatile organic content of less than 15%, is not reactive with the latex polymer, and is
dispersible in the coating composition
and assists in the formation of a continuous coating or film from the latex particles after applying the composition to a
surface and allowing it to dry.
BASF patents pigment
composition
Patent No. U.S. 7,811,375 B2
BASF Corp. has been granted a patent
for a heated mixture comprised of from
approximately 1% to 46% by weight of
lithopone having a refractive index
greater than 1.8; and from 54% to 99%
by weight of a dehydroxylated kaolin,
wherein when the dehydroxylated kaolin
is comprised of metakaolin, the heated
mixture has a GE brightness equal to or
greater than 90% and a Hunter yellowness index of less than 11, and when the
dehydroxylated kaolin is comprised of
fully calcined kaolin, the heated mixture
has a GE brightness greater than 90%
and a Hunter yellowness index of less
than a 7. The heated mixture is formed
by mixing hydrous kaolin having a GE
brightness of 88 or more and a refractive
index from 1.56 to 1.58, and the high refractive index pigment, and heating at a
temperature from 760° C to 1150° C,
and the heated mixture has a particle
size distribution where at least 80% to
90% by weight of the particles have a
particle size of 2 microns or less and less
than 5% by weight of the particles have
a particle size of 0.2 micron.
BASF Coatings patents aqueous
multi-constituent coating
Patent No. U.S. 7,812,088 B2
BASF Coatings GmbH, has obtained a
patent for an aqueous multicomponent
coating material comprised of (I) an aqueous component comprised of a mixture
product of: (A) at least one secondary
aqueous dispersion of at least one
(meth)acrylate copolymer containing on
average per molecule at least one isocyanate-reactive functional group, (B) at
least one primary aqueous dispersion of at
least one (meth)acrylate copolymer containing no isocyanate-reactive functional
group and having a number average molecular weight Mn of between 100,000
and 3,000,000 Daltons, and (C) at least
one pigment and a filler, wherein the
weight ratio of (meth)acrylate copolymer
(A) to (meth)acrylate copolymer (B) in
component (I) is from 10:1 to 1: 3; and
also (II) a component comprised of a
crosslinking agent comprised of at least
one polyisocyanate, wherein the coating
has a popping limit greater than 100 μm.
PPG patents coating with
modified epoxy resins
Patent No. U.S. 7,812,101 B2
PPG Industries has been granted a
patent for a modified epoxy resin comprised of the epoxy functional reaction
product of resin and an epoxy resin further reacted with a compound having
one or more hydroxy reactive groups,
wherein the compound having one or
more hydroxy reactive groups is comprised of polyisocyanate.
Paint for detection of corrosion
and warning of chemical and ra-
diological attack
Patent No. U.S. 7,780,913 B2
Lawrence Livermore National Security,
LLC has been awarded a patent for a system that warns of encounter of radiological substances, comprised of an
unmanned aerial vehicle, a discrete viewing surface on the unmanned aerial vehicle, a paint operatively connected to the
discrete viewing surface on the unmanned aerial vehicle, an indicator material carried by the paint that provides a
direct or instrument-assisted visual indication of radiological substances encountered by the unmanned aerial
vehicle, wherein, the indicator material
carried by the paint includes scintillation
pigments that produces luminescence
when exposed to radiological substances
and produces a direct or instrument-assisted visual indication of the radiological substances on the paint on the
discrete viewing surface on the vehicle,
and a camera operatively connected to
the unmanned aerial vehicle for monitoring the paint on the discrete viewing surface on the unmanned aerial vehicle.
Imerys Pigments patents fine
clay kaolin
Patent No. U.S. 7,806,978 B2
Imerys Pigments, Inc. has been granted a
patent for a composition comprised of
kaolin having a shape factor ranging
from 32-49, wherein at least approximately 85% by weight of the kaolin has
an esd of less than 1 μm, the amount of
the kaolin having an esd of less than 0.25
μm ranges from 35% to approximately
60% by weight. CW
