PPG patents dual cure coating
Patent No. U.S. 7,794,844 B2
PPG Industries has been granted a patent
for a multi-component composite coating
comprised of a first coating formed from
a composition comprised of a melamine
group-containing polyethylenically unsaturated compound comprised of a plurality
of alkoxy groups; and a second coating
deposited directly adjacent to the first
coating and comprised of a film-forming
resin comprised of functional groups reactive with the alkoxy groups of the
melamine group-containing polyethylenically unsaturated compound.
Ciba patents strongly
adherent coating
Patent No. U.S. 7,790,244 B2
Ciba Specialty Chemicals Corp. has obtained a patent for a method for improving the adhesion of coatings to an
inorganic or organic substrate wherein at
least one copolymer or cooligomer comprised of monomer units derived from at
least one monomer selected from the
group consisting of acrylate and acry-lamide monomers, at least one monomer
selected from the group consisting of
amine containing ethylenically unsaturated monomers, at least one monomer selected from the group consisting of
ethylenically unsaturated associative
monomers and at least one monomer selected from the group consisting of poly-acrylates of polyols, is added to the
coating and the copolymer or cooligomer
is at least partially neutralized with acid
prior to application to the inorganic or organic substrate.
BASF patents solid
resin-crosslinker for
aqueous coatings
Patent No. U.S. 7,790,011 B2
BASF Coatings has received a patent for
a method of coating an article comprised
of blending a resin and a curing agent,
wherein the resin is ionizable and has pendant amino groups; melting the resin and
the curing agent at a temperature less than
the thermal curing temperature of the curing agent; cooling the blended, molten
resin and curing agent until solid to form
a solid, blended resin-curing agent; grinding the solid, blended resin-curing agent
into a powdered or granular form to produce a granular, solid resin-curing agent;
dispersing the granular, solid resin-curing
agent in an aqueous medium, wherein dispersing further includes adding an acidic
salting agent; thereby forming a coating
dispersion, wherein the resin in the coating dispersion is neutralized by the acidic
salting agent, rendering the resin water-dispersible and the coating dispersion cathodically electrodepositable; and
applying the coating dispersion to an article by cathodic electrodeposition; wherein
the granular, solid resin-curing agent is
transported to a coating preparation site
prior to the dispersing step; or the solid,
blended resin-curing agent is transported
to a coating preparation site prior to the
grinding step.
Adherent coating for
resinous substrates
Patent No. U.S. 7,763,679 B2
E.I. du Pont de Nemours and Company
has been granted a patent for a coating
composition that when applied over a
resinous substrate produces an adherent
coating. The composition is comprised of
a crosslinkable component comprised of
a polymeric mix containing at least one
crosslinkable copolymer polymerized
from a monomer mixture comprised of
one or more ethylenically unsaturated
monomers having on average 1 to 10 hydroxyl groups and a saturated hydrocarbon polymer, wherein the monomer
mixture is comprised of in the range of
from 70 parts to 99 parts of the ethylenically unsaturated monomers and 1 part to
30 parts of the saturated hydrocarbon
polymer, all in parts by weight based on
100 parts by weight of the crosslinkable
component; and a crosslinking compo-
nent comprised of cycloaliphatic polyiso-cyanate of the formula: R1—(R2—
NCO)n wherein R1 is a substituted or
unsubstituted cycloaliphatic group containing 3 to 20 carbon atoms in the ring,
R2 is independently selected from a direct
bond, a straight aliphatic group or
branched aliphatic group, wherein the
aliphatic group has from 1 to 6 carbon
atoms, and wherein n ranges from 2 to 10.
PPG patents coatings
comprising terpene
Patent No. U.S. 7,776,959 B2
PPG has been granted a patent for a coating comprised of a hydroxy functional
polymer comprised of a terpene and a hydroxy functional acrylic monomer that is
polymerized with terpene by free radical
polymerization, wherein the monomer is
not maleic acid/anhydride, and wherein
the hydroxy functional polymer is comprised of 30 percent weight or greater of
the terpene.
3M patents adhesive
composition
Patent No. U.S. 2010272942
3M Innovation Properties has patented a
pressure-sensitive adhesive composition
having improved initial tack (generally,
the pressure-sensitive adhesive composition comprises (1) a carboxylic group-containing (meth)acrylic tacky polymer
having a weight average molecular
weight of less than 800,000 and a glass
transition temperature of -100° C to - 30°
C, and (2) an amino group-containing
(meth)acrylic non-tacky polymer having
a weight average molecular weight of
from 30,000 to 100,000 and a glass transition temperature of 20° C to 90° C. The
amino group-containing (meth)acrylic
non-tacky polymer (2) is present in an
amount of no less than 1 parts by mass
and less than 20 parts by mass on a basis
of 100 parts by mass of said carboxylic
group-containing (meth)acrylic tacky
polymer (1). CW
