Process for preparing blends of poly(ethylene terephthalate) and

Details Process for preparing blends of poly(ethylene terephthalate) and Process for preparing blends of poly(ethylene terephthalate) and

1995-12-22

1997-11-18

Short, Patricia A.

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

Synthetic resins

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

528481, 528503, C08L 6702

Patent

active

056888740

ABSTRACT:
The present invention relates to a process comprising solid state polymerizing an immiscible polyester blend which has not been substantially melt esterified under conditions sufficient to produce a polyester blend which when remelted becomes clear. Polyester blends having improved I.V., color and low acetaldehyde are also disclosed.

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Research Disclosure No. 28340, "Poly(Ethylene Naphthalenedicarboxylate)/Poly(Ethylene Terephthalate) Blends", Nov. 1987.
Research Disclosure No. 29410, "Poly(Ethylene Naphthalenedicarboxylate)/Poly(Ethylene Terephthalate) Blends", Oct. 1988.
Stewart et al. in Polymer, vol. 34, pp. 4060-4067.
Jenkins in the Proceedings of Specialty Polyesters '95, pp. 197-221.
Antec, vol. 2, 1 Jan. 1993, pp. 1222-1226, XP000573715, Stewart M E et al., p. 1223.
Colloid & Polymer Science, vol. 272, no. 11, 1 Aug. 1994, pp. 1352-1362, XP000574275, Andresen E. et al., p. 1353.

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