Dainichiseika Color and Chemicals
Patents Pigment Dispersants
U.S. 8,163,839 B2
Dainichiseika Color and Chemicals has
received a patent for a process for the production of a pigment dispersant comprised
of polymerizing (a) 5% to 30% weight of
at least one of an aromatic vinyl monomer
and a heterocyclic vinyl monomer, (b) 10%
to 30% weight of a monomer having an acid
group, (c) 40% to 80% weight of a (meth)
acrylate ester monomer, and (d) 5% to 30%
weight of a monomer having a poly(C2-6-al-
kylene glycol) chain or mono(C1-22-alkyl)
ether chain of the glycol, the poly(C2-6-al-
kylene glycol) chain or mono(C1-22-alkyl)
ether chain has a number average molecular
weight of 150 to 1,500, a sum of the monomers (a) to (d) amounting to 100% weight,
with a polymerization initiator in a water-soluble organic solvent to obtain a polymerization mixture with a polymer contained
therein, combining and mixing the polymerization mixture and water together to emulsify or dissolve the polymer in the water such
that an emulsion or solution of the polymer
is obtained, adding an acid to the emulsion
or solution of the polymer to have the polymer precipitated such that a mixture of water
and the polymer is obtained, and heating the
mixture to a temperature of not lower than a
cloud point of the polymer, wherein the polymerization initiator is such that a coupling
product of radical decomposition products
of the polymerization initiator has a boiling
point of not lower than 250° C.
DSM Patents Coating
U.S. 8,187,707 B2
DSM has been awarded a patent for a
coated substrate comprised of a substrate
and a superhydrophobic film or coating on
the substrate, wherein the superhydrophobic film or coating has a static water contact angle above 140° and is comprised of
a layer of raspberry particles, wherein the
raspberry particles is comprised of primary
particles, and secondary particles, adhered
to a surface of the primary particles by covalent chemical bonds and having an average diameter that is smaller than an average
diameter of the primary particles, and a
hydrophobic upper surface layer covering
at least partly a surface of the secondary
particles and adhered to the surface of the
secondary particles, the upper surface layer
having a thickness of from 1 nm to three
times the average diameter of the primary
particles, wherein the primary particles or
the secondary particles are adhered to the
substrate by covalent chemical bonds.
Finished Unlimited Patents
Radiation Cured Coatings
U.S. 8,304,032
Finished Unlimited has obtained a patent
for a curable coating composition suitable
for use on composite substrates. The coating
composition is comprised of a multifunctional oligomer, a monomer selected from
the group consisting of monofunctional
monomers, difunctional monomers and
mixtures, a photoinitiator, a polyester resin
and a polycarboxylic acid.
PPG Patents
Electrodepositable
Coatings
U.S. 8,168,700 B2
PPG Industries has been granted a patent
for an electrodepositable coating composition comprised of a resinous phase dispersed
in an aqueous medium. The resinous phase
is comprised of (a) an active hydrogen-containing, cationic salt group-containing
resin; and (b) an at least partially blocked
polyisocyanate curing agent, the improvement is comprised of the inclusion in the
electrodepositable coating composition of
an organotin catalyst for effecting cure between the resin (a) and the curing agent (b),
wherein the catalyst is comprised of the following structure (I): [R1][R2]—Sn2O (I)
where R1 and R2 are the same or different,
and each independently represents a monovalent hydrocarbon group, wherein the
sum of the carbon atoms of R1 and R2 is
greater than 8, the catalyst being present in
the electrodepositable coating composition
in an amount sufficient to effect cure of the
electrodepositable composition at a temperature at or below 340° F; wherein the catalyst is dispersed in the resin (a) and/or the
curing agent (b) of the resinous phase prior
to the resinous phase being dispersed in the
aqueous medium; and the resinous phase is
not subjected to a grinding or milling operation; and there is no other curing catalyst in
the resinous phase.
UCL Business Patents
Thermochromic Coatings
U.S. 8,197,721 B2
UCL Business PLC has been awarded a
patent for a method of producing thermochromic vanadium oxide by atmospheric
pressure chemical vapor deposition comprised of the steps of mixing together a
vanadium precursor, an oxygen precursor,
and, optionally, a transition metal dopant
precursor in the presence of an inert gas to
form a precursor mixture; reacting together
the precursors of the precursor mixture in
an atmospheric pressure chemical vapour
deposition reactor; and depositing the thermochromic vanadium (IV) oxide, characterized in that the vanadium concentration in
the precursor mixture is, before reaction, less
than 1× 10− 3 mol/dm3; and the oxygen concentration in the precursor mixture is, before
reaction, less than 1× 10−2 mol/dm3.
Patent for Low-Emissive
Paint
U.S. 8,187,503 B2
Totalforsvarets Forskningsinstitut has
been granted a patent for a method for reducing thermal emissions from a surface
in the infrared wavelength range of 2.5-
25 μm, which is comprised of applying a
paint to the surface, the paint including
metal particles made from a metal selected
from the group consisting of aluminium,
zinc, iron, magnesium, beryllium, titanium, manganese, gallium, and chromium,
in a binder solution containing poly( 3,4-
ethenedioxythiophene), polystyrene sulfonate, and water, the metal particles being
0.1%-25% by weight of the paint. CW
