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Polymer Modifiers

Elvaloy® PTW and Elvaloy® AC resins for polyester (PET & PBT) impact toughening

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.


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 requirements, Elvaloy® PTW provides super-toughness in virgin and glass fiber reinforced compounds.


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



DuPont™ 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 DuPont polymer 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

  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