Patents Update
Kansai Paint patents thermosetting coating
Patent No. U.S. 7,744,962 B2
Kansai Paint Co. has been granted a patent for a thermosetting liquid coating composition for an aluminum wheel comprised of a
hydroxy- and carboxy-containing
acrylic resin having a hydroxyl value
of 90 to 150 mg KOH/g and an acid
value of 1 to 30 mg KOH/g, the
acrylic resin being obtained by
copolymerizing a monomer mixture
comprised of 10-50% weight of a C6-
18 alkyl ester of (meth)acrylic acid,
8-40% weight of a secondary
hydroxy-containing unsaturated
monomer, and a carboxy-containing
unsaturated monomer; and an amino
resin.
PPG PATENTS BONDING OF
POWDER COATING COMPOSITIONS
Patent No. U.S. 7,737,197 B2
PPG Industries has received a
patent for a method of producing a
powder coating composition comprised of the steps of providing a pigment composition comprised of flake-like, color effect pigment particles
and a polymeric binder, the pigment
composition having an initial particle size distribution with fine particles; mixing and heating the pigment
composition to a temperature to
achieve a second particle size distribution substantially without fine
particles, wherein the temperature is
more than 2° F greater than the TG
of the pigment composition; and cooling the pigment composition from
the second step to produce the powder coating composition.
XUREX PATENTS
ANTI-GRAFFITI COATING
Patent No. U.S. 7,737,195 B2
Xurex, Inc. has been granted a
patent for an anti-graffiti surface coat-
ing consisting of the combination of
alkali metal silicate, ethylene-glycol col-
loidal silica, aminopropyl oxysilane, flu-
orinated polyurethane and alkali metal
methyl siliconate. The coating charac-
terized in that it is a surface-penetrat-
ing coating, is chemically resistant and
possesses a surface tension higher than
the surface tension of the surface to
which it is applied, whereby paint
applied to the coating is easily removed.
CANON KABUSHIKI KAISHAHAS
PATENTS METHOD FOR
PRODUCING A PIGMENT
Patent No. U.S. 7,737,270 B2
Canon Kabushiki Kaishahas has
been granted a patent for a method
for producing a copper phthalocyanine pigment or titanyl phthalocyanine pigment. The method is comprised of a step of obtaining a mixture by mixing at least one compound selected from the group of
phthalonitrile, phthalonitrile derivative, isoindoline derivative and sub-phthalocyanine derivative, and a
compound supplying copper or titanium with a solvent; and a step of holding the mixture at not less than a
temperature where a subcritical
state or a supercritical state of the
solvent occurs to obtain the pigment
by reacting the compounds.
HONTEK PATENTS
ABRASION RESISTANT COATINGS
Patent No. U.S. 7,736,745 B2
Hontek Corporation has been
granted a patent for a solid and liquid
erosion resistant article comprised of
an airfoil shaped substrate having a
leading edge surface exposed in use to
high speed impingement of liquid
and/or solid particles, the leading
edge surface covered with a protective
coating comprised of a matte topcoat
layer comprised of a polyurethane or
polyurea composition forming a coat-
ing disposed on the leading edge sur-
face having a tensile strength greater
than 1000 psi (70 kg/cm2), an elonga-
tion at break greater than 400%, a
tensile set of less than 150%, and a
Shore A hardness of 44A to 95A as
measured at 68° F and having a
matte finish as measured according to
ASTM D 523-89 (1999) with an 85
degree surface gloss less than 15,
wherein the polyurethane or polyurea
coating composition is selected from
the group consisting of a water dis-
persion of a pre-reacted polyurethane
and a polyisocyanate or an iso-
cyanate-terminated prepolymer cured
with a curing agent selected from a
group consisting of an aldimine, a
ketimine, a polyaspartic ester and
mixtures thereof and an optional
cocuring agent selected from the
group consisting of a polyamine, a
polyol and mixtures thereof.
BASF PATENTS PVC PLASTISOLS
FOR USE IN COIL COATING
Patent No. U.S. 7,741,403 B2
BASF Corporation has been
awarded a patent for an effect pigment PVC plastisol comprised of at
least one finely divided PVC
homopolymer, prepared by emulsion
polymerization or microemulsion
polymerization, having particle sizes
of from 0.04-40 μm, and which as a
dispersion in a plasticizer exhibits
dilatancy; at least one finely divided
PVC homopolymer, prepared by
emulsion polymerization, having
particle sizes of from 1-400 μm, and
which as a dispersion in a plasticizer
exhibits pseudoplasticity; at least
one plasticizer; at least one effect
pigment and at least one additive,
wherein the additive is comprised of
an organic solvent, and the weight
ratio is chosen so that the PVC plastisol exhibits pseudoplasticity. CW
