PBT Impact Resistance

- January 01, 2016 -

Elvaloy® enhances impact strength while maintaining other properties needed in electrical and electronic connectors, as well as a wide range of other industrial and consumer products.

Graph 1: Improved impact strength of PBT with Elvaloy® PTW

Elvaloy® PTW provides super-tough impact resistance while improving hydrolysis resistance of PBT compounds for higher product quality. It also can enable increased productivity, while achieving improved impact strength in cast PET-based sheet applications.

For the most demanding PBT impact resistance requirements, Elvaloy® PTW provides super-toughness in virgin and glass fiber reinforced compounds.

Dow™ Elvaloy® PTW terpolymers and Elvaloy® AC acrylate copolymers enhance PBT and PET resins as an impact modifier, nucleating agent, processing aid to improve melt flow, and as a hydrolysis stabilizer. Examples of Dowpolymer modifiers used in polyester include the following:

PRODUCT GRADE RECOMMENDATION	PBT	PET	GLASS-REINFORCED	FUNCTION
Elvaloy® PTW	X	X	X	Super tough
Elvaloy® PTW	X	X	X	Compatibilizing polyesters with PE or PP
Elvaloy® 4170	X		X	Super toughening
Elvaloy® AC	X		X	Moderate toughening, high flow
Elvaloy® 8920		X		Crystallization promoter for PET