New product concept

Improve the thermal and mechanical performance of your PET by using a PEI additive!

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Type of Solution sought


A specific PEI or PEI / PET masterbatch used as an additive in PET to improve the Tg, the mechanical strength & the dimensional stability of the final formulation while maintaining transparency.

Who might be interested?
Companies developing PET products:
  • films
  • foams
  • fibers
  • blow molded or thermoformed products (ex: bottles, packaging, etc.)
  • injection molded products
  • PET compounds

Description of Desired Solution

A specific PEI or PEI / PET masterbatch used as an additive in PET to improve the Tg, the mechanical strength & the dimensional stability of the final formulation while maintaining transparency.

Detailed Solution Description

PET is a common polymer widely used in various film, foam, fiber, and packaging applications. Temperature limitations of PET are well known within the industry, but imagine the possibility of a solution that could improve the Tg, mechanical strength & dimensional stability of the final formulation while maintaining transparency?
A PEI additive could help enhance both thermal and mechanical properties of your PET. Flame retardancy and Limiting Oxygen Index (LOI) of the final product may also be improved. In many cases, a PET/PEI material does not require significant changes to conventional PET processing methods.
We are looking for collaborators from the PET industry to validate this new solution!
PET Property Enhancements
Polyester
(PET)		 Polyetherimide
(PEI)		 PET with
PEI Additive vs.
PET
  Tg (°C) 87 217 Higher
  Density (g/cm3) 1.4 1.27 Lower
  Shrinkage (%, Max) 3 0.7 Lower
  CTE (ppm/°C) 80 50 Lower
  Limiting Oxygen Index (LOI, %) 21 47 Higher
  Flame Retardancy HB V0 @ 0.75 mm Better
  Tensile Strength (MPa) 60 110 Higher
How can you benefit from this solution?
Foams Foams:
  • Up to 10-15°C increase in Tg
  • Compatibility with common foam production lines
  • Manage material cost through PEI additive levels
Films Films:
  • Up to 15-20°C increase in Tg
  • Compatibility with existing processing methods
  • Use of the PET blend in higher temperature applications
Fibers Fibers:
  • Up to 10-20°C improvement in Tg
  • Enhance Limiting Oxygen Index (LOI) of PET fibers
  • Improve melt viscosity to attain higher spin / draw speed
Blow Molding / Thermoforming Blow Molding / Thermoforming:
  • Up to 10-20°C improvement in Tg
  • Support higher temperature conversion process
  • Withstand secondary processes at temperatures above the Tg of PET