U.S. 8,557,895 B2
PPG Industries has been granted a patent for a method for making an aqueous
dispersion of polymer-enclosed particles
comprised of subjecting an aqueous medium to pulverizing conditions, wherein
the aqueous medium is comprised of a
mixture comprised of particles, an ethylenically unsaturated monomer and
a water-dispersible ethylenically unsaturated polymer, and wherein the
polymer-enclosed particles are formed
by polymerizing at least a portion of
the ethylenically unsaturated monomer
with the water-dispersible ethylenically
unsaturated polymer during the pulverizing conditions.
Elastomeric Paint with
Protective Coating on
Styrenic Block Copolymer
U.S. 8,557,349 B2
Apex Materials Corporation has obtained a patent for a process for forming
an elastomeric paint and/or elastomeric
protective coating upon a thermoplastic
elastomeric substrate forming an article
and having a surface structure receptive to receiving at least one selective
elastomeric paint coating. The process
includes the thermoplastic elastic substrate substantially comprised of a styrenic block copolymer; permanently
applying a paint coating composition to
the surface structure of a thermoplastic
elastomeric substrate article, the elastomeric paint coating composition comprised of one or more copolymer resins
selected from the group consisting of a
tailback, radical block and multiblock
copolymer, and optionally a diblock
copolymer; mineral oil; solvents; colorants and, additives; wherein each of the
copolymers contains at least two thermodynamically incompatible segments,
selected from the group consisting of
styrene-butadiene-styrene polymers;
styrene-isoprene-styrene polymers; sty-rene-ethylene-butadiene-styrene polymers;
styrene-ethylene-propylene-styrene
polymers; styrene-ethylene-butylene-styrene polymers; styrene-butadiene
polymers; and tyrene-isoprene polymers; wherein the copolymers comprise
between five- 10 percent by weight of the
elastomeric paint coating composition;
wherein the mineral oil is comprised of
between five- 15 percent by weight of the
elastomeric paint coating composition;
wherein the solvents comprise aromatic
and aliphatic solvents, thearomatic solvents including toluene, xylene, aromatic 150 and aromatic 100, and the
aliphatic solvents including heptane, cyclohexane, mineral spirits and VM and
P, the solvents comprise between 80-90
percent by weight of the elastomeric
paint coating composition; wherein the
elastomeric paint coating composition
includes pigments comprised of at least
one of luminescent pigment, fluorescent
pigment, and thermochromic pigment,
and comprised between three-eight percent by weight of the elastomeric paint
coating composition; wherein at least
one additive selected from the group
consisting of adhesion modifier, matting
powder, antistatic agent, defomer, wetting agent, antioxidant, anti-ultraviolet
agent, and a fragrance, and the additives being added to adjust the coating
composition for flow, viscosity, and surface characteristics; and applying the
elastomeric protective coating onto the
top coat treatment of the thermoplastic
elastomeric article, wherein the elastomeric protective coating is comprised of
one or more copolymer resins selected
from the group consisting of a tailback,
radical block and multiblock copolymer, and optionally diblock copolymer;
an alpha cyanoacrylate; mineral oil;
solvents; and additives; and wherein the
elastomeric paint and elastomeric protective coating furnishing protection to
the imprinted article to provide scratch
resistance and allow stretching of the
article during its usage.
DuPont Teijin Patents
Antifog Coatings
U.S. 8,557,384 B2
DuPont Teijin Films U.S. Limited
Partnership, Chester, Va. (US) composite
film comprising a polyester film substrate
having first and second sides, and on at
least one of said first and second sides a
coating composition comprising an alkali metal silicate, a wetting agent, and
a hydrophilic antifog agent, wherein the
hydrophilic antifog agent has a molecular
weight no greater than 20,000 Daltons.
Hontel Patents Erosion
Resistant Coatings for
Leading Edges of Airfoils
U.S. 8,557,388 B2
Hontek Corporation has been granted
a patent for a polyurethane or polyurea
rain erosion resistant coating composition for protecting a leading edge substrate on an airfoil against liquid and
solid particle erosion comprised of an
isocyanate-terminated prepolymer with
an isocyanate content of 0. 5-40 weight
percent, based on the weight of the prepolymer; a curing agent selected from
the group consisting of an aldimine, a
ketimine, a polyaspartic ester, a polyamine, a polyol and mixtures thereof;
and a flatting agent, having a particle
size of one- 20 micrometers present at
a level of one- 15 weight percent based
on the total weight of the the polyurethane or polyurea coating composition,
and selected from the group consisting
of silica, polymeric beads, talc, alumina,
calcium carbonate, urea-formaldehydes
and mixtures thereof; the polyurethane
or polyurea rain erosion resistant coating composition in dry cured form having a tensile strength greater than 1000
psi ( 70 kg/cm2), an elongation at break
greater than 350 percent, a tensile set
after break of less than 150 percent,
and a Shore A hardness of 44A to 95A
as measured at 68° F, a matte finish as
measured according to ASTM D 523-89
PPG Patents Aqueous Dispersion Coating
