Method for producing enhanced solid state

Details Method for producing enhanced solid state Method for producing enhanced solid state

2007-07-31

2007-07-31

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S288000, C528S292000, C528S302000, C528S308000, C528S308600, C528S483000, C528S483000

Reexamination Certificate

active

10978587

ABSTRACT:
A method for enhancing solid state polymerization of polyethylene terephthalate is disclosed in which at least one monomeric unit of diacid and/or dimethyl ester comprising at least one pendant chemical side group is copolymerized with a diol and a diacid or a dimethyl ester. The at least one pendant chemical side group may include groups chosen from tertiary butyl, hexyl, pentyl, butyl, propyl, ethyl, methyl, nitrosyl (NO2) and sulfonyl (SO2) groups.

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