PPG patents aqueous coating
U.S. 8,143,341 B2
PPG Industries has been granted a
patent for an aqueous coating composition comprised of water, coloring agent,
a film-forming polymer containing
functional groups, a curing agent for
the film forming polymer having functional groups that are reactive with the
functional groups and a linear adjuvant
resin having hydroxyl groups reactive
with the functional groups, wherein the
hydroxyl groups are located at the terminal ends of the adjuvant resin; and
wherein the adjuvant resin further is
comprised of a hydrocarbon moiety
comprised of from 16-40 contiguous
carbon atoms positioned between the
hydroxyl groups; and wherein the hydroxyl groups are derived from a polyol
and the hydrocarbon moiety is derived
from a linear dicarboxylic acid; the adjuvant resin having a hydroxyl group
equivalent weight of from 100-500 and
an acid value less than 5.
Ferro patents special effect
pigments
U.S. 8,172,935 B2
Ferro Corporation has obtained a
patent for a composition comprised of
intentionally added synthetic mixed-metal oxide pigment particles, wherein
at least 10% weight of the synthetic
mixed-metal oxide pigment particles
have a Cu1+Cr3+O2 crystal structure,
and wherein at least approximately
70% weight of the synthetic mixed-metal oxide pigment particles having
the Cu1+Cr3+O2 crystal structure have
a plate-like morphology.
Eastman Chemical patents
thermosetting polyester
coating
U.S. 8,163,850 B2
Eastman Chemical Company has received a patent for a curable polyester
comprised of diacid residues comprised
of approximately 30-70 mole percent,
of the residues of isophthalic acid and
70- 30 mole percent of the residues of
adipic acid, based on the total moles of
diacid residues; diol residues comprised
of 50-100 mole percent, based on the
total moles of diol residues, of the
residues of 2,2, 4,4-tetramethyl-1,3-
cyclobutanediol; and polyol residues
comprised of 3-30 mole percent of the
residues of at least one polyol, based on
the total moles of diol and polyol
residues; wherein the curable polyester
has a number average molecular weight
of 500-10,000 daltons, a glass transition temperature of − 35° C- 50° C, a
hydroxyl number of 20-300 mg KOH/g
of polyester, and an acid number of 0
mg-80 mg KOH/g of polyester.
SDC Coatings patents
abrasion-resistant coating
U.S. 8,158,191 B2
SDC Coatings, Inc. has been awarded a
patent for a process for tinting a transparent, tintable, abrasion-resistant coating that is coated on at least one surface
of a substrate, comprised of applying a
polyurethane dispersion-based primer
to at least one surface of a polycarbon-ate or polyamide substrate; contacting
the primer applied to the substrate with
a coating composition that forms a
transparent, tintable, abrasion-resistant
coating upon curing, the coating composition is comprised of an aqueous-or-ganic solvent mixture having hydrolysis
products and partial condensates of at
least one of an epoxy functional silane
and a diol functional organopolysiloxane, and at least one multifunctional
crosslinker, wherein the multifunctional
crosslinker is comprised of a silylated
multifunctional anhydride, and wherein
the at least one of the epoxy functional
silane and the diol functional
organopolysiloxane is present in a
molar ratio to the multifunctional
crosslinker from approximately 10:1-
1: 10; an amount of water sufficient to
hydrolyze the at least one of the epoxy
functional silane and the diol functional
organopolysiloxane and the multifunctional crosslinker; and a blocked isocyanate; curing the coating composition
to form a transparent, tintable, abrasion-resistant cured coating; and tinting
the cured coating by immersing the
coated surface of the substrate in a dye
bath for the cured coating to absorb or
transmit an amount of dye sufficient to
allow up to 50% light transmittance
through the coated substrate.
Bostik patents moisture
crosslinkable adhesive
composition
U.S. 8,158,723 B2
Bostik, S.A. has been granted a patent
for an adhesive composition obtainable
by mixing 100 parts by weight of at
least one organic polymer having moisture crosslinkable reactive silane terminal functions, and 1-70 parts by weight
of at least one organic polymer comprised of no reactive silane functions,
wherein the organic polymer is miscible
at ambient temperature with the polymer and is comprised of a polyester, and
further wherein the organic polymer is
comprised of at least one homopolymer
or copolymer obtainable from at least
one alkyl (meth)acrylate monomer comprised of an alkyl radical having from
1-15 carbon atoms, or monomers comprised of styrene derivatives, vinyl
ethers, or (meth)acrylic acids; at least
one polyoxyalkylene of molecular mass
ranging from 500-30,000 g/mole; at
least one polyurethane obtainable by
condensation of a polyol with a poly-isocyanate; or a combination thereof.
Kusumoto Chemicals patents
defoamers for topcoat paint
for motor vehicles
U.S. 8,173,751 B2
Kusumoto Chemicals, Ltd. has obtained a patent for a method for im-
