Durastrength® 440

• The low Tg core of the Durastrength 440 impact modifier enables it to be used in applications typically reserved for MBS modifiers. For demanding low temperature applications, it can be used to create products that can withstand -40°C and still remain ductile.

Impact Performance of Durastrength® 440 IM in Polycarbonate 

• Durastrength® 440 all-acrylic impact modifier provides the excellent weatherability for which acrylics are known, opening the door for use in applications that demand retention of color and mechanical properties upon exposure to the elements.
• The properties of DurastrengthⓇ 440 impact modifier have been optimized to provide a readily dispersed modifier that has a minimal impact on the color of molded parts. Conventional acrylics can give a faded appearance and inhomogeneous mold-in color. DurastrengthⓇ 440 impact modifier overcomes these deficiencies permitting the use of acrylic modifiers in the molding of high-viscosity resins into thin-walled geometries.

Color Stability of Durastrength® 440 IM During High-Speed Injection Molding

• Durastrength 440 impact modifier has minimal effect on other polymer properties.

• Durastrength® 440 impact modifier is recommended for use in PC and PC blends where superior low temperature impact and weatherability are required.
• Durastrength® 440 impact modifier is targeted for use in automotive applications, lawn and garden equipment, and recreational vehicles where weatherability and good low temperature impact are important.
• Prospective clients should evaluate Durastrength® 440 impact modifier in their own laboratories to establish optimum conditions in their processes and applications. Arkema's Technical Service Team is available to diskuss your application requirements provide formulation guidance and laboratory testing as needed.

Durastrength® 440 impact modifier is packaged in 25kg bags and 1,000lb bulk bags