General Electric Company

General Electric Corporation Gmbh

Herve Cartier

Ulrich Hofmann

Piet J Bolluijt

Peter O Stahl

Werner Woerhle

Geert Tamboer

Jasper R Bouma

Franciscus Petrus Maria Mercx

Jan Peter Keulen

Christiaan Henricus Koevoets

Sanjay Braj Mishra

Luc Govaerts

Jan P H Keulen

Antonius Adrianus Marinus De Vries

Eric Reitjens

Eric Rietjens

Christian Henricus Koevoets

A method for increasing the crystallization rate of a polyethylene terepthalate (PET) prepared based on terepthalic acid (TPA) and ethylene glycol monomers, by adding into said TPA-based PET an effective amount of a polyethylene terepthalate prepared based on dimethyl terephthalate (DMT), in an amount sufficient for said thermally formable composition to have an increase in crystallization temperature as required for the final end-use application.

Polyethylene terephthalate compositions

The above described deficiencies and drawbacks are overcome by the process for making poly(arylene ether)-polyamide compositions which comprise about 10 weight percent (wt %) to about 90 wt % poly(arylene ether), about 90 wt % to about 10 wt % polyamide, about 0.01 wt % to about 10 wt % compatibility modifier, and optionally other additives known in the art. The process comprises several components which can be employed singly or in combination, namely: utilizing resins and additives that are substantially free of gaseous oxygen (air-free; e.g. less than about 1.0 vol % oxygen preferred, and less than about 0.5 vol % oxygen especially preferred, and less than about 0.05 vol % especially preferred); melting and compounding under an atmosphere which is substantially air-free; adding up to 20 wt % of polyamide to the poly(arylene ether) before compounding; when employing an extruder with an atmospheric vent, operating with the atmospheric vent open; and performing the injection molding under an inert atmosphere.

Reduction of carbonized particles in a poly(arylene ether)-polyamide composition

Reduction of carbonized particles

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Levallois Perret, France

Herve Cartier