Methods for producing improved stable polyethylene terephthalate

Details Methods for producing improved stable polyethylene terephthalate Methods for producing improved stable polyethylene terephthalate

1978-03-13

1979-05-15

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528480, C08G 6326

Patent

active

041549201

ABSTRACT:
Methods for producing improved, thermally-stable polyethylene terephthalate resins are provided. Polyethylene terephthalate resins are provided that can be fabricated into products such as carbonated beverage containers with a minimum of degradation products such as acetaldehyde preferably by rapidly polymerizing a prepolymer from an i.v. of about 0.2 to an i.v. of at least about 0.7.

REFERENCES:
patent: 2933476 (1960-04-01), Fisher
patent: 3390134 (1968-06-01), Kibler
patent: 3634356 (1972-01-01), Tryon
patent: 3718621 (1973-02-01), Wilson
patent: 3842040 (1974-10-01), Browne et al.
patent: 3969324 (1974-07-01), Berkau

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