Browse Prior Art Database

PREPARATION OF POLY-P-XYLYLENE

IP.com Disclosure Number: IPCOM000023391D
Original Publication Date: 1977-Aug-31
Included in the Prior Art Database: 2004-Mar-30

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure is directed to a method for preparing poly-para-zylylene.. The first step in the process is the synthesis of a polyester from. an acid or an ester which upon decbmpo. sition produces a-gas such as . carbon dioxide. Exemplary of starting materials for the synthesis are a-diaikyi oxaiate such as dimethyl oxalate, diethyl oxalate, dibutyj. opiate, and the like and & dioi, preferably para-xylene-&,,-diol. When the starting materials are transesterified and condensed,. an intermediate is fojaned. For eicampie, when dibutyl oxalate and para-xylene-md, 01. -diol are transisterified and condensed, poiy-para-'xylene-oxalate and a by-product are formed: