Page 58 - Plastics News December2018

PRODUCT NEWS

Elkem Silicones new LSR Select Songwon launches a new
range provides more molding antioxidant SONGNOX 5057

options ongwon has developed and launched a new

Santioxidant, SONGNOX 5057 to add value to its
lkem Silicones USA Corp. in York, S.C., has revealed a range of stabilizers for polyols and polyurethane. The
Enew Elkem LSR Select range of liquid silicone rubber new product complements songwons already broad
products in Shore hardnesses of 25A, 35A, 50A and 70A. range of aminic, phenolic, phosphite and thioester
LSR Select is aimed at low temperature LSR molding, antioxidants. Fit for use for various substrates,
but also is capable of achieving faster cure at normal including polyols, the new liquid butylated octylated
mold temperatures.Ted Johnson, senior staff chemist
aminic antioxidant is designed for flexible polyurethane
slabstock foams, elastomers and hot melt adhesives.
Various industries ranging from furniture and bedding
to automotive components and sports applications use
foam. SONGNOX 5057, in combination with hindered
phenols such as SONGNOX 1135 or SONGNOX1076,
provides protections to polyols against degradation
during storage and transportation. Further, the
combination stops scorching, i.e., discoloration in the
center of the foam, during the manufacture of flexible
polyurethane foams.

Thomas Schmutz, Leader Technical Service &
Application Development, said, “Thanks to its low
at the silicone rubber materials producer, presented volatility and its liquid form, SONGNOX 5057 is suitable
the materials Nov. 27 at the Smithers Rapra Silicone for numerous substrates and applications. In many
Elastomers World Summit in Malpensa.Johnson noted that industries, the quality standards required for foams are
traditional LSR molding involves a supply of uncured "A" becoming more rigorous. Since SONGNOX 5057 contains
and "B" components in a 1:1 ratio sent to a static mixer, very little residual
with color additives supplied when required, and fed diphenylamine, it
as a still uncured mixture via a cold runner system for allows us to address
injection into a hot mold to form finished cured moldings. specific customer
Elkem's LSR Select solution involves pre-mixed "A" and needs in demanding
"B" materials from a single drum, to which an inhibitor po lyurethane
additive, catalyst and colors are added ahead of the a pplica t i on s. ”
static mixer via precise dosing valves. "Use of the single- SONGWON’s world-
component LSR Select material means responsibility class facility in
for the LSR base polymer system is no longer a subject Ulsan, South Korea
of concern for the processor, as responsibility has been produces SONGNOX
transferred back entirely to Elkem as single-component 5057. The new product is helping to increase economic
LSR material producer." Processors can vary the amount value through production efficiency and scale. Elena
of catalyst to influence promotion of reaction and the Scaltritti, Leader Business Unit Polymer Stabilizers,
amount of control inhibitor additive to determine the said, “Our state of the art plant enables SONGWON to
degree of reactivity. This gives processors options to supply products cost effectively all over the world and is
increase cure speed at normal mold temperature, or to ideally situated to support customers, including in Asia,
achieve a reasonable cure rate at reduced temperatures. the market with the highest growth”. Scaltritti, added,
This approach enables easier startup and shutdown, as “SONGWON’s focus on and continuous investment in
well as saving material by eliminating the need for purging key, cutting edge solutions that meet today’s high
material with incorrect "A"-to-"B" ratios, Johnson said. standards to the plastic additives industries.”

Plastics News December 2018 5860