High Solid Anticorrosive Coating from
Chugoku Marine Paint
U.S. 8,597,749 B2
Chugoku Marine Paints has been granted a patent for a high solid anticorrosive
coating composition comprised of (A) a
main component comprised of a semi-solid state bisphenol epoxy resin (a1)
having an epoxy equivalent weight of
260 to 280; and (B) a curing component
comprised of an epoxy adduct of xylylenediamine (b1) and an epoxy adduct of
polyamide (b2), the curing component
(B) is comprised of 50 to 200 parts by
weight of the epoxy adduct of polyamide (b2) per 100 parts by weight of the
epoxy adduct of xylylenediamine (b1),
wherein the total amount of the bisphenol epoxy resin (a1), the epoxy adduct of
xylylenediamine (b1) and the epoxy adduct of polyamide (b2), {(a1)+(b1)+(b2)},
in the coating composition is 15 to 45
weight percent.
PPG Patents Organic and
Inorganic Pigments with
Acrylic Resins
U.S. 8,575,242 B2
PPG has obtained a patent for a method
of preparing a water-based paint com-
prised of melting at least one acrylic
resin, wherein the resin has an acidity
number higher than 30, an average mo-
lecular weight of between 800 and 5000
Da and a melting point of between 75°
and 130° C., wetting of the entire surface
of pigment with the melted acrylic resin
extruding the mixture thus obtained,
characterized in that extrusion is per-
formed at an internal temperature of
the extruder 5 to 20° C higher than the
melting temperature of the resin, cool-
ing thereof and subsequent granulation
in the wet state and drying, to obtain a
granule composition comprised of pig-
ments coated with the at least one acrylic
resin, wherein the granule composition
contains from 80 to 20 percent by weight
of the pigment and from 80 to 20 percent
by weight of the acrylic resin, wherein
the granule composition defines granules
having a diameter from 1.0 to 2.2 mm,
wherein the granule composition is dust-
free, and adding the obtained granule
composition to a water-based formula-
tion having a basic pH.
United Technologies
Patents Layered Thermal
Barrier Coating
U.S. 8,574,721 B2
United Technologies Corporation has
been granted a patent for multilayer
coating comprised of a bond coat layer; a first barrier layer applied on the
bond coat layer, wherein the first barrier layer has a compositional gradient
comprised of (a) a majority of a first
rare earth stabilized zirconia material
proximate the bond coat layer to (b) a
majority of a second rare earth stabilized zirconia material away from the
bond coat layer, wherein the first and
second rare earth stabilized zirconia
materials are different; a second barrier layer applied on the first barrier
layer, wherein the second barrier layer
has a compositional gradient comprised of (a) a majority of the second
rare earth stabilized zirconia material
and zero weight percent of a third rare
earth stabilized zirconia material proximate the first barrier layer to (b) zero
weight percent of the second rare earth
stabilized zirconia material and 100
weight percent of the third rare earth
stabilized zirconia material away from
the first barrier layer.
Ferro Patents Pigment
Additive for Improving
Solar Reflectance
U.S. 8,580,028 B2
Ferro Corporation has been awarded
a patent for a black colored pigment
exhibiting improved solar reflectance,
the pigment is comprised of a material
formed in the presence of an effective
amount of a phosphate and in the form
of a solid solution having a formula
(CrxFeyMez)2On wherein x+y+z=1, n is
the number of oxygens required for elec-
troneutrality, Me is at least one metal, and
z is less than 0.3, wherein x and y cannot
be zero; wherein the material when in a
pressed cup form, exhibits an average re-
flection of less than p20 percent for light
having a wavelength between 400 and
600 nm; wherein the material when in
a pressed cup form, exhibits an average
reflection of greater than 40 percent for
light having a wavelength between 1300
and 1600 nm; and wherein the material
includes phosphate ions.
Whitford Patents
Fluoropolymer Coating
U.S. 8,586,677 B2
Whitford Corporation has been granted
a patent for a fluoropolymer composition comprised of at least one high molecular weight polytetrafluoroethylene,
which has been trace modified with a
modifying co-monomer (TMHPTFE)
and having a number average molecular
weight (Mn) of at least 500,000 and a
first melt temperature (Tm) of less than
342° C.
The modifying co-monomer present
in an amount of less than one weight
percent, based on the weight of the
TMHPTFE, the at least one TMHPTFE
present in an amount of between 50
weight percent and 90 weight percent
based on the total solids weight of all
fluoropolymers in the composition; at
least one melt-processible fluoropolymer
(MPF) selected from perfluoroalkoxy
(PFA) and methylflouroalkoxy (MFA),
the MPF present in an amount of between 10 weight percent and 50 weight
percent based on the total solids weight
of all fluoropolymers in the composition, and having a melt flow index (MFI)
greater than 10 g/10 min; and wherein
the composition lacks low molecular
weight polytetrafluoroethylene (LPTFE)
having a number average molecular
weight (Mn) of less than 500,000. CW
