BASF Patents Lacquer Coating
U.S. 8,211,504 B2
BASF Coatings has been granted a patent
for a process for producing a color and/or
effect coating system on a substrate comprised of one of a process comprised of
applying at least one aqueous color and/
or effect solid-color topcoat material to
the substrate, to give at least one solid-color topcoat film, and curing the at least
one aqueous solid-color topcoat film,
to give at least one color and/or effect
solid-color topcoat; and a process comprised of applying at least one aqueous
color and/or effect basecoat material to
the substrate, to give at least one aqueous basecoat film, at least one of flashing
off and drying the at least one aqueous
basecoat film, without curing it fully, applying at least one clearcoat material to
the at least one aqueous basecoat film, to
give at least one clearcoat film, and jointly
curing the at least one aqueous basecoat
film and the at least one clearcoat film,
to give a multicoat color and/or effect
coating system comprised of at least one
color and/or effect basecoat and at least
one clearcoat. The at least one color and/
or effect aqueous basecoat material or the
at least one aqueous color and/or effect
solid-color topcoat material is comprised
of at least one ionically and/or nonioni-cally stabilized polyurethane binder that
is one of saturated and unsaturated, and
optionally grafted with olefinically unsaturated compounds, and at least one
water vapor permeability adjusting additive, in an amount sufficient to prevent
popping marks in the solid-color topcoat
or basecoat, comprised of at least one
of at least one aqueous dispersion of at
least one copolymer prepared by a process comprised of subjecting at least one
olefinically unsaturated monomer to free-radical polymerization in the presence of
at least one water-insoluble initiator in an
aqueous dispersion of at least one polyurethane resin having a number-average
molecular weight Mn of from 1,000 to
30,000 daltons and containing on average
per molecule from 0.05-1.1 polymerizable
double bonds, the weight ratio between
the at least one polyurethane resin and
the at least one olefinically unsaturated
monomer being between 1:10-10:1; and
at least one aqueous dispersion prepared
by a process comprised of dispersing and
homogenizing a mixture of at least one
hydrophobic polyurethane resin, at least
one olefinically unsaturated monomer, at
least one surface-active substance, and
water in a high shear field to give stabilized particles of materials in the mixture
in an aqueous phase, (co)polymerizing
the at least one olefinically unsaturated
monomer within these particles to give
a dispersion of a hydrophobically modified core polymer, adding a mixture of at
least one olefinically unsaturated monomer comprising at least one hydrophilic
olefinically unsaturated monomer to the
dispersion of the hydrophobically modified core polymer, an copolymerizing the
at least one hydrophilic olefinically unsaturated monomer in the presence of the
core polymer, to give a hydrophilic shell
polymer, wherein the at least one aqueous
color and/or effect solid-color topcoat
material or the aqueous color and/or effect basecoat material contains no metal
flake pigments, and which after curing
gives a color and/or effect solid-color
topcoat or color and/or effect basecoat
having a water vapor permeability that is
one of 60° C > 6.0 mg/h·m·bar and p60°
C >286.4 g·100 μm/m2·d, where d stands
for day; or the at least one aqueous effect or color and effect solid-color topcoat material or aqueous effect or color
and effect basecoat material is comprised
of metal flake pigments, and which after
curing gives an effect or color and effect
solid-color topcoat or an effect or color
and effect basecoat having a water vapor
permeability that is one of 60° C> 4.0
mg/h·m·bar and 60° C>190.92 g·100
μm/m2·d, wherein the water vapor permeability of the at least one color and/or
effect solid-color topcoat or the at least
one color and/or effect basecoat is determined by ASTM F1249; and the at least
one solid-color topcoat or the at least one
color and/or effect basecoat has a film
thickness of 25 to 70 μm and is free from
popping marks after curing.
Nippon Paint Patents Metal
Surface Treatment Liquid
for Electrodeposition
Coating
U.S. 8,221,559 B2
Nippon Paint Co. has been granted a
patent for a metal surface treatment liquid for cation electrodeposition coating
which is comprised of zirconium ions,
copper ions and other metal ions, and
has a pH of 1.5 to 6. 5, wherein the other
metal ions are at least one selected from
the group consisting of tin ions, indium
ions, aluminum ions, niobium ions, tantalum ions, yttrium ions and cerium ions;
the concentration of zirconium ions is in
the range of 10 to 10,000 ppm; the concentration ratio of the copper ions to the
zirconium ions is in the range of 0.005 to
1 on a mass basis; and the concentration
ratio of the other metal ions to the copper ions is in the range of 0.1 to 1,000 on
a mass basis; and further comprised of a
hydrolysis condensate of aminosilane.
Henkel Patents Hotmelt
Adhesive with Improved
Adhesion
U.S. 8,222,336 B2
Henkel AG and Co. has been granted a
patent for a hot melt adhesive consisting
of 10%-80% weight of at least one copolymer, based on ethylene and/or propylene
and C4 to C20 -olefins, that is obtained
by metallocene-catalyzed polymerization;
5%-60% weight of at least one tackifying
resin; 0.1%-15% weight of at least one
polymerizate based on C2 to C5 olefins
and (meth)acrylic acid esters, the polymerizate containing COOH groups or anhydride groups; and 0%-45% weight of
additives. CW
