Coatings World - July 2011

PPG patents universal primer

Patent No. U.S. 7,816,418 B2 PPG Industries has been granted a patent for a radiation-curable coating composition comprised of 50%-80% by weight a radiation-curable compound, the improvement comprised of including in the coating composition 1%-5% by weight a free acid, wherein the free acid is selected from tannic acid, phosphoric acid, gallic acid and/or citric acid; 1%-10% by weight of a halogenated polyolefin; 1%-3% by weight of a photoinitiator; and a phosphate ester acrylate; so as to improve the adhesion of the coating composition to both metal and plastic substrates; the percentages by weight being based on weight of total resin solids in the composition.

ulate aluminum oxide or hydrophobic silica is present in highly dispersed form in the coating material and the components are selected such that the coating material has a viscosity of less than 1000 mPas within a temperature range of 0°C to 90°C.

from the corresponding carboxyl group containing polyester, which is the reaction product of an acid constituent which contains from 65-100 mole percentage of isophthalic acid and of a glycol constituent which contains from 20-100 mole percentage of neopentyl glycol, wherein the (meth)acryloyl group containing acrylic copolymers are obtained from the corresponding carboxyl group containing acrylic copolymers, and wherein the carboxylic group containing polyester is in admixture with the carboxylic group containing acrylic copolymer and the admixture is further reacted with a monomer having a (meth)acryloyl group and an epoxy functional group.

Henkel patents UV curing anti-fingerprinting coating Patent No. U.S. 7,816,434 B2 Henkel has obtained a patent for a coating material comprised of 40%-90% weight of at least one oligomeric substance selected from the group consisting of epoxy (meth)acrylates, polyester (meth)acrylates, polyether (meth)acrylates, and polyurethane (meth)acrylates, wherein the oligomeric substance is linear or branched and contains at least two unsaturated double bonds; 5%- 60% weight of at least one low molecular weight (meth)acrylate selected from the group consisting of monofunctional, difunctional, trifunctional and polyfunctional (meth)acrylate compounds; 0.1%-20% weight of at least one (meth)acrylate compound different from the first two containing one or more acidic groups; and 0.1%-20% weight of at least one auxiliary substance selected from the group consisting of adhesion promoters different from flow-control agents, defoaming agents, light stabilizers, dyes, pigments, biocides, fillers and photoinitiators; wherein 2%- 9.7% weight, based upon total coating material, of the at least one low molecular weight ( meth)acrylate is selected from difunctional, trifunctional and polyfunctional (meth)acrylate compounds; and at least one of nanopartic-

Valspar patents high performance aqueous coating Patent No. U.S. 7,812,090 B2 Valspar Sourcing, Inc. has been granted a patent for a coating composition comprised of a silane-functional, acetoacetoxy-func-tional multistage latex polymer, wherein the multistage latex polymer is comprised of at least one silane-functional soft stage having a Tg between approximately − 65° C and 30° C and at least one hard stage having a Tg between 30° C and 230° C.

Cytec patents radiation curable low gloss powder coating Patent No. U.S. 7,816,420 B2 Cytec Surface Specialties has obtained a patent for a radiation curable powder coating composition comprised of as a binder a mixture of 30%-90% weight of one or more (meth)acryloyl group containing amorphous polyester resins having an unsaturated equivalent weight of more than 700 g/double bond and an isophthalic acid content of from 65%-100% weight, calculated on all the acids, and 10%-70% weight of one or more (meth)acryloyl group containing acrylic copolymers having an unsaturated equivalent weight of up to 1250 g/double bond, based on the total weight of the binder, wherein the (meth)acryloyl group containing amorphous polyester resins are obtained

BASF patents coating for adhesion to olefinic substrates Patent No. U.S. 7,816,449 B2 BASF Coatings has been granted a patent for a coating composition comprised of film forming components and an adhesion promoter comprised of an olefin-based polymer having a functionality thereon that is essentially unreacted with the film forming components of the coating composition when subjected to curing conditions, wherein the film forming components comprised of a principal, film-forming resin and a melamine formaldehyde crosslinker reactive with the principal, film-forming resin when the coating composition when subjected to curing conditions; wherein the olefin-based polymer has at least one acid functional group and wherein the olefin-based polymer is a block copolymer formed by reacting a substantially saturated olefin polymer with a lactone chain-extension reagent. CW

3M wins patent cases in Canada and China

3M Co. patent lawyers scored wins on two continents over its reflective coatings used on firefighter coats. The Maplewood-based manufacturer said Tuesday that Eurtoex of Canada was ordered by Federal Court in Ottawa to pay damages to 3M and stop selling products that 3M said infringed on its Scotchlite Reflective Material Fire Coat Trim. 3M also said that a court in Shanghai ruled last month that Zhejiang Daoming Reflective Materials Co. infringed on one of 3M's patents related to the same technology.