Polyester production process and reactor apparatus

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

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Details

C422S131000, C526S062000, C528S271000

Reexamination Certificate

active

06852827

ABSTRACT:
The invention provides a polyester production process by bulk polymerization in a reactor, wherein the volume of the resulting polyester is shrunk for a release from the inner surface of the reactor, so that the polyester can be recovered in the form of a bulky mass. The invention also provides a reactor for bulk polymerization for polyester, which comprises an inner surface that enabling the resulting polyester to be released therefrom upon its volume shrinkage.

REFERENCES:
patent: 2668162 (1954-02-01), Lowe
patent: 3297033 (1967-01-01), Schmitt et al.
patent: 5378801 (1995-01-01), Reichert et al.
patent: 5440008 (1995-08-01), Fumiaki et al.
patent: 60-144325 (1985-07-01), None
patent: 3-502115 (1991-05-01), None
patent: 7-026001 (1995-01-01), None
patent: 7-053684 (1995-02-01), None
patent: 9-328481 (1997-12-01), None
patent: 2000119269 (2000-04-01), None
Chujo et al,Die Makromolekulare Chemie 100,262-266 (1967).

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