Method for incorporating alkyl ester endgroups to improve...

Details Method for incorporating alkyl ester endgroups to improve... Method for incorporating alkyl ester endgroups to improve...

2006-09-12

2006-09-12

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C264S176100, C264S219000, C528S198000, C558S268000

Reexamination Certificate

active

07105626

ABSTRACT:
Alkyl ester end-capped polycarbonates have improved release properties and may be produced by a method comprising the step of combining a polycarbonate having free terminal OH groups with an end-capping reagent comprising a symmetrical activated carbonate and an alkyl ester, whereby the end-capping reagent reacts with at least some of the free hydroxyl end groups of the polycarbonate to produce an end-capped polycarbonate comprising optionally substituted aliphatic ester end groups.

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