High melt strength pet polymers for foam applications and method

Details High melt strength pet polymers for foam applications and method High melt strength pet polymers for foam applications and method

1992-11-24

1993-07-20

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 51, 521 79, 521 97, C08J 934, C08J 908

Patent

active

052294323

ABSTRACT:
The present invention relates to poly(ethylene terephthalate)("PET") polymer resins having high melt strength and advantageous non-Newtonian behavior; the resins can be foamed to produce closed cell structures with advantageous densities, cell sizes, cell size distributions, mechanical properties and thermal properties. More specifically, the PET resins of the present invention are highly branched due to the inclusion of one or more branching agents, and these resins can be advantageously used with environmentally friendly blowing agents.

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