Valspar Patents Crush Resistant
Latex Topcoat for Fiber Cement
U.S. 8,202,578 B2
Valspar Sourcing has been granted a patent for a method of making topcoated fiber
cement articles comprised of providing an
unattached fiber cement board substrate
having a first major surface; providing a
topcoat coating composition comprised of
a multistage latex polymer having a soft
stage Tg such that the coating composition
will coalesce at a Minimum Film Forming
Temperature (MFFT) between approximately 0°C and about 55°C without
requiring more than 10% VOCs for acceptable film formation, and a hard stage
Tg such that cement board substrates topcoated with the coating composition may
be stacked without exhibiting evidence of
crush damage; applying the coating composition to at least a portion of the first
major surface; drying or otherwise hardening the coating composition to form a
crush resistant final topcoat that is color
change resistant when exposed outdoors;
and wherein the final topcoat has a Crush
Resistance value of at least 3 when two
face-to-face coated embossed fiber cement
board substrates are subjected to a pressure of 6 kg/cm2; and stacking more than
two of the thus-coated boards on a pallet
or other horizontal supporting surface.
Heat and Rain Erosion
Resistant Coating
U.S. 8,206,501 B2
Kenneth A. Krienke has been granted a patent for a temperature resistant and erosion
resistant surface treatment for use in coating
metal surfaces. The treatment is comprised
of titanium ethoxide; 3-glycidoxypropyl-
trimethoxysilane; an organic acid; and one
or more additives that impart erosion resistance, heat resistance, or a combination
thereof to the surface treatment, and wherein the one or more additives are present in
the surface treatment in an amount from approximately 20 to 40 volume percent, based
on the total volume of the titanium ethoxide and 3-glycidoxypropyltrimethoxysilane
in the surface treatment, and wherein the
amount of 3-glycidoxypropyltrimethoxysi-
lane is from 25 to 35 volume percent and
the amount of titanium ethoxide is from 15
to 35 volume percent, based on the total volume of the surface treatment.
The Shepherd Color Patents
Non-Chromate Corrosion
Inhibitor
U.S. 8,216,352 B2
The Shepherd Color Company has obtained a patent for a crystalline zinc aluminum vanadium hydrotalcite composition
that is substantially free of trace salts,
suited for use as an anti-corrosive pigment.
Kansai Paint Patents
Aqueous Primer
U.S. 8,216,490 B2
Kansai Paint Co. has been granted a patent
for an aqueous primer composition comprised of an aqueous dispersion of modified
polyolefin which is comprised of an unsaturated carboxylic acid- or acid anhydride-modified polyolefin having a melting point
of 120° C or lower and a weight average
molecular weight of 30,000 to 180,000,
dispersed in an aqueous medium, an ionic
functional group-containing acrylic resin,
and a conductive carbon-containing pigment, which forms a coating film with an L
value of 35 or more and a surface resistivity of 1×108 Ω/sq or less, wherein the ionic
functional group-containing acrylic resin
has at least one species of ionic functional
group selected from tertiary amino group
and quaternary ammonium base, and has
an ionic functional group containing unsaturated monomer unit in an amount ranging
from 1 to 40 mole percent.
BASF Coatings Patents
Metallic Tone Glitter
U.S. 8,202,634 B2
BASF Coatings Japan Ltd. has been
granted a patent for a method of forming a metallic tone glitter paint film
comprised of applying a first base metallic paint for providing a sense of glitter
with a metallic tone to a base material,
the first base metallic paint comprised of
an aluminum pigment (A) of average particle diameter D50 from 13 to 40 μm and
average thickness from 0.4 to 2.5 μm;
and an aluminum pigment (B) of average particle diameter D50 from 4 μm to
30 μm and average thickness from 0.02
to less than 0.4 μm, wherein the ratio
(A/B) of the masses of the solid fractions
of the aluminum pigments (A) and (B) is
from 90/10 to 10/90, and the total mass
(A+B) of the solid fractions of the aluminum pigments (A) and (B) is from 5 to 50
parts by mass per 100 parts by mass of
the resin solid fraction; applying a second
base glitter paint to the first base metallic
paint wet-on-wet, wherein the first base
metallic paint is in an unhardened state,
and the second base glitter paint comprising a very small scale-like pigment,
or a very small scale-like pigment and
an aluminum pigment (C), wherein the
very small scale-like pigment is characterized by providing the metallic tone glitter
film with a pearlescent gloss; wherein the
very small scale-like pigment is selected
from the group consisting of metal oxide coated mica pigments, metal oxide
coated synthetic mica pigments, metal
oxide coated alumina flake pigments,
metal oxide coated silica flake pigments,
metal oxide coated iron oxides, stainless
flakes, metallic titanium flake pigments,
plate-like molybdenum sulfide, plate-like
bismuth chloride, plate-like iron oxide,
cholesteric liquid crystal polymers, and
combinations comprising one or more of
the foregoing; applying a clear paint to
the second base glitter paint wet-on-wet,
wherein the second base glitter paint is
in an unhardened state; and baking the
first base metallic paint, the second base
glitter paint, and the clear paint simultaneously at a temperature ranging from
room temperature to 160°C, wherein the
resulting metallic tone glitter paint film
obtains both a pearlescent gloss and a
metallic gloss. CW
