Modified PET polymers and copolymers suitable for extrusion blow

Details Modified PET polymers and copolymers suitable for extrusion blow Modified PET polymers and copolymers suitable for extrusion blow

1985-01-30

1985-11-19

Phynes, Lucille M.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528272, 5283082, 528488, C08G 6376

Patent

active

045543283

ABSTRACT:
There is disclosed an improved modified polymer suitable for use in making hollow containers by conventional extrusion blow molding. It is a specific type of end-capped and branched polyethylene terephthalate polymer or copolymer. In the improvement, the end-cap comprises the reacted component of a difunctional acid or alkali metal salt of a difunctional acid having the formula: ##STR1## wherein: X has a valency of 6 and is selected from sulfur, selenium, and tellurium;

REFERENCES:
patent: 4161579 (1979-07-01), Edelman et al.
patent: 4223125 (1980-09-01), Bier et al.
patent: 4393178 (1983-07-01), Legras et al.

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