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 radiological 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.