Coatings World - December 2010

CVC Thermoset Specialties, an Emerald
Performance Materials Company, intro-
duced a new glycidyl ester product line.
The company’s patent-pending technolo-
gy delivers high peel strength and high
impact strength while maintaining a
high Tg in the epoxy matrix, according to
the company. The new products provide
alternatives to traditional core-shell and
high molecular weight non-epoxy type
polyols used as impact modifiers, which
may offer either high impact or high peel
adhesion but typically are not delivered
optimally. New products include Hypro
1300X63 ETBN, Hypro 1300X68 ETBN
and Hypro 2000X174 ETB. The first two
are diglycidyl esters of low molecular
weight butadiene-acrylonitrile copoly-
mer while the third is a diglycidyl ester
of a low molecular weight butadiene
homopolymer. All three products are
designed to function as toughening
agents for applications such as molding,
adhesives, impact resistant coatings,
prepregs and composites when used at
low levels. At high loadings they offer
highly elastomeric properties to epoxy
systems even at temperatures below -
40C. The new product platform repre-
sents an expansion of Emerald’s CTBN
reactive liquid polymer technology which
combines the technology it acquired from
its predecessor, BFGoodrich, along with
technology the company acquired from
CVC Specialties Inc. in 2008. Unlike tra-
ditional epoxy resin adducts, the new
products are essentially 100% epoxy
functional rubber. As compared to tradi-
tional CTBN adducts which typically use
bisphenol A, bisphenol F carrier resins or
other diluents, these new glycidyl ester
modifiers do not utlize resins or diluents.
Because of this, these modifiers can be
used in any epoxy system as there in no
limiting compatibility from the carrier
resin. The new glycidyl ester additives
also allow formulators to modify resin
systems so they can achieve lower for-
mulated viscosities at equal rubber con-
tent, which may be a processing advan-
tage in certain applications, while maxi-
mizing Tg, lap shear, and peel adhesion.
compounds for automotive plastic interi-
or applications. In addition to UV protec-
tion, the new grade offers low fogging
and low migration performance plus pro-
cessing efficiency. Hostavin N845PP pro-
tects PO-based components against sun-
light and artificial light degradation. It
remains within the plastic and does not
migrate to the surface of the component
when exposed to heat. As a result
Hostavin N845PP has a reduced fogging
and migration potential. This advantage
is achieved through the grade’s compati-
bility with the PO matrix. Hostavin
N845PP is a 2-in-1 active ingredient,
which means that the UV stabilizer is
enclosed in a non-traditional carrier.

CVC Thermoset’s new glycidyl ester line
MOMENTIVE UNVEILS
NEW TECHNOLOGY

CLARIANT LAUNCHES UV
STABILIZER WITH UNIQUE BENEFITS
Clariant has launched the UV stabilizer
Hostavin N845PP for polyolefin (PO)

SILBERLINE INTRODUCES TUFFLAKE
PREMIER 018 ALUMINUM PIGMENT
Automotive OEM coatings containing
aluminum pigments are subject to
tremendous shear forces. These
mechanical forces can have the tenden-
cy of dulling the metallic appearance of
the final coating by breaking and
deforming the individual aluminum
flakes. Silberline's Tufflake line of "cir-
culation-resistant" pigments is specifi-
cally engineered to withstand these
mechanical forces and maintain their
targeted appearance. Tufflake Premier
is the next generation of Tufflake pig-
ments from Silberline. The overall
brightness, metallic travel, degradation
resistance, smooth patina and
improved Bell-Bell orientation makes
Tufflake Premier pigment well suited
for the demands of the automotive
industry. Tufflake Premier exhibits
excellent degradation resistance for
automotive OEM; improved orientation
and brighter face in Bell-Bell applica-
tions; improved orientation with
brighter face and deeper travel in air
assisted siphon applications; and
Tufflake Premier pigments are avail-
able in a standard package size of 20
kilograms or 44 pounds. CW

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