Dow Corning patents architectural
coating containing silicone resins
U.S. 7,807,744 B2
Dow Corning Corporation has received a
patent for an architectural coating composition consisting of (i) 0.5-10% by
weight of a silicone resin based on the
total weight of the architectural coating
composition, wherein the silicone resin is
a DT silicone resin containing 5-60%
mole of units of the formula R2SiO2/2
and 40-95% mole of units of the formula
R′SiO3/2 or a MTQ silicone resin containing units of the formula (R3SiO1/2)a,
units of the formula (R′SiO3/2)b, and
units of the formula (SiO4/2)c, where a
has a value of 0.05 to 0.5, b has a value of
0.05 to 0.75, c has a value of 0.05 to 0.6,
with the proviso that the value of a +b +c
is equal to one, wherein R is an alkyl
group containing from one to eight carbon atoms and R′ is propyl; (ii) 10-50%
by weight of an acrylic resin based on the
total weight of the architectural coating
composition; (iii) 20 -80% by weight of a
carrier based on the total weight of the architectural coating composition. The carrier is comprised of water, a water
compatible carrier, or mixtures thereof;
(iv) 0.5-40% by weight of a pigment
based on the total weight of the architectural coating composition; (v) 0.5-10% by
weight of a surfactant based on the total
weight of the architectural coating composition, the surfactant is comprised of an
anionic surfactant, a nonionic surfactant,
or mixtures thereof; and optionally (vi) 0-
5% by weight of an additive based on the
total weight of the architectural coating
composition, wherein the additive is selected from the group consisting of a
thickener, a pigment dispersant, a defoamer, a biocide, and amine compounds.
BASF patents coating
and film system
U.S. 7,807,743 B2
BASF Corporation has obtained a patent
for a coating composition comprised of
a carbamate functional polymer; a cross-linking agent reactive with the carba-
mate functional polymer and an acid
functional polymer that is non-reactive
with the carbamate functional polymer
and the cross-linking agent, the acid
functional polymer having an acid value
of at least 50 mg KOH/g.
PPG patents conversion coating
with alkaline earth metal
fluoride complexes
U.S. 7,776,448 B2
PPG Industries Ohio, Inc. has received a
patent for a coated metal substrate comprised of a metal surface which has been
contacted with an aqueous crystalline-forming composition comprised of a
Group IIA dissolved metal ion; a dissolved complex metal fluoride ion
wherein the metal atom is selected from
Group IIIA, Group IVA, Group IVB,
Group VA, and Group VB metals; a complex forming metal salt different from
the complex metal fluoride ion, and
water, wherein the complex forming
metal salt complexes free fluoride ions to
provide an aqueous composition which
is substantially free of Group IIA metal
fluoride precipitate; and wherein the
complex forming metal salt is selected
from the group consisting of sodium
metasilicate, polysilicate, Zeolites, zirconyl nitrate, titanyl sulfate, tetrafluo-rozirconate, tetrafluorotitanate.
Lanxess patents yellow iron
oxide pigments
U.S. 7,799,125 B2
Lanxess Deutschland GmbH has received
a patent for a yellow iron oxide pigment
having an oil absorption value of less than
25 and either an a* value of greater than
4. 3 measured by CIELAB units in white
reduction in L64 according to DIN 6174
and/or a b* value of greater than 34 measured by CIELAB units in white reduction
in L64 according to DIN 6174 or an a*
value of greater than 10 measured by
CIELAB units in full shade according to
DIN 6174 and/or a b* value of greater
than 45 measured by CIELAB units in full
shade according to DIN 6174 and a reduction ratio for standard depth of shade
B 1/9 according to DIN 53235 Part 1 and
2 of less than or equal to − 6. 5.
Highly weatherable roof
coatings from Arkema
U.S. 7,803,867 B2
Arkema Inc. has obtained a patent for an
aqueous-based flexible roof coating composition comprised of an aqueous dispersion of an acrylic-modified fluoropolymer
(AMF) having a weight average molecular weight of greater than 100,000, applied on top of a flexible roof substrate,
wherein AMF is prepared by fluoropolymer seed polymerization process.
Coating for protecting dazzling
effect
U.S. 7,806,979 B2
LG Chem, Ltd. has obtained a patent for
an antiglare film comprised of a substrate;
and an antiglare coating composition
coated on the substrate, the antiglare coating composition is comprised of an acrylate binder resin; 2- 30% weight of
inorganic fine particles selected from a
group consisting of alumina, aluminum hydroxide, magnesium oxide, antimony
oxide, and silica having an average particle
size ranging from 0.4 μm to less than 1 μm,
wherein the refractive index of the fine particles varies between 0.2-0.5 from the refractive index of the acrylate binder resin,
based on the weight of acrylate binder
resin; and 1-20% weight of inorganic fine
particles selected from a group consisting
of alumina, aluminum hydroxide, magnesium oxide, antimony oxide, and silica,
having an average particle size of 1 to 3
μm, wherein the refractive index of the fine
particles varies within 0.1 from the refractive index of the acrylate binder resin,
based on the weight of acrylate binder
resin, and wherein the internal diffusion
haze of the film ranges from 15-40 and surface haze of the film is less than 15. CW
