Valspar patents dispersion-coated
powder coloring system
U.S. 7,867,555 B2
Valspar Sourcing Inc. has been granted a
patent for a method comprised of extruding a base powder mixture to form a base
powder with a particle size of 10 to 300
microns, wherein the base powder mixture comprises a carboxyl-functional
polyester resin curable with an epoxide-functional compound; mixing the base
powder with at least one stable colorant
dispersion below approximately 40° C to
form a colored mixture in which particles
of the base powder are coated with a colorant and there is a minimal change in the
particle size of the base powder particles,
wherein the stable colorant dispersion
consists of at least one of a pigment and a
dye in a liquid carrier, wherein the liquid
carrier is selected from water, organic solvents and combinations thereof, and
wherein the liquid carrier does not cause
melting or softening of the base powder,
and wherein the pigment is selected from
organic pigments with a median particle
size of less than 0.3 microns, titanium
dioxide pigments with a median particle
size of 0.3 to 0.5 microns, iron oxide pigments with a median particle size of 0.2
to 0.6 microns, carbon black pigments
with a median particle size of approximately 0.07 microns, and phthalocyanine
blue pigments with a median particle size
of approximately 0.05 microns; and treating the colored mixture at temperatures
below the softening point of the base
powder to form a free flowing powder.
Kansai patents multi-layer
coating
U.S. 7,851,026 B2
Kansai Paint Co. has been granted a
patent for a coating method comprised of
the steps of applying a metallic base coating containing an effect pigment on a surface to be coated and applying a colored
clear coating, wherein the metallic base
coating forms a coating film having an IV
value of 230 or more and a measured
value of particle feeling (HG value) on a
micro brilliance feeling-measuring apparatus of from 60 to approximately 40.
Toyota patents self-stratifying
automotive topcoat
U.S. 7,863,375 B2
Toyota Motor Engineering and Manufacturing North America, Inc. has obtained a
patent for a process for preparing a coating composition. The process is comprised
of contacting a polyol, a silsesquioxane, a
polyurethane dendrimer, and a crosslinker,
wherein the polyol, the silsesquioxane, the
polyurethane dendrimer and the
crosslinker are dispersed within a solvent;
and forming a self-stratifying coating.
Tronox patents method of
controlling the particle size of
Tio2 produced by the chloride
process
U.S. 7,854,917 B2
Tronox LLC has been granted a patent for
a process for manufacturing titanium dioxide comprised of continuously reacting a titanium halide and an oxygen-containing
gas in the vapor phase to produce titanium
dioxide particles and gaseous reaction
products. The reaction is carried out by
combining a reactant stream of the titanium
halide and a reactant stream of the oxygen-containing gas in a reaction zone of a vapor
phase oxidation reactor at a temperature of
at least 700° C; introducing a particle size
control agent into the reaction zone to control the particle size of the titanium dioxide, the particle size control agent including
an ionizing agent and fumed silica; and separating the titanium dioxide particles from
the gaseous reaction products.
BASF patents thermosetting
coating
U.S. 7,858,190 B2
BASF Coatings GmbH has been granted a
patent for a curable coating composition
comprised of (a) a compound having
functionality that reacts in curing the
coating consisting of functionality A and
functionality B, (b) a second material having functionality that reacts with functionality A in curing the coating consisting
of functionality C and (c) a crosslinker
having functionality consisting of a plurality of functional groups D that react at
least with functionality B in curing the
coating, wherein compound (a) has silyl
ether functionality and a functionality selected from the group consisting of isocyanate functionality and hydroxyl
functionality and wherein the compound,
the second material and the crosslinker
are each different.
Saint-Gobain patents pigments
and polymer composites
U.S. 7,863,369 B2
Saint-Gobain Ceramics and Plastics, Inc.
has been granted a patent for a composite
material comprised of a polymer matrix;
and a pigment dispersed in the polymer
matrix, the pigment is comprised of an
alumina hydrate particulate material and
a dye. The dye is directly covalently
bonded to an oxygen atom on a surface of
the alumina hydrate particulate material.
Henkel patents adhesive
composition
U.S. 7,868,094 B2
Henkel AG & Co. KGaA has been
granted a patent for a foamed one-part
waterborne adhesive or coating composition comprised of a noncrosslinkable
polymer, a reactive crosslinkable polymer, at least a second crosslinkable
component and a crosslinking catalyst,
and wherein the catalyst is selected
from the group consisting of one-third
basic aluminum chloride, two-third
basic aluminum chloride or mixtures
thereof. CW
