Browse Prior Art Database

POLYDIVINYL BENZENE VIA ELECTRON BEAM POLYMERIZATION

IP.com Disclosure Number: IPCOM000023679D
Original Publication Date: 1978-Oct-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 226K

Publishing Venue

Xerox Disclosure Journal

Abstract

Poly-p-xylylene has been proposed as a carrier core coating for use in xerographic developer compositions. One of the characteristics of poly-p-xylylene is the fact that the aromatic ring is included in the polymer backbone. Poly-p-xylylene is illustrated below:

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I

XEROX DISCLOSURE JOURNAL

POLYDIVINYL BENZENE VIA ELECTRON Proposed Classification
BEAM POLYMERIZATION U.S. Cl. 252/62.lP
K. Okumura mt. Cl. G03g 9/00
W. R. Salaneck
* H. R. Thomas

Poly-p-xylylene has been proposed as a carrier core coating
for use in xerographic developer compositions. One of the
characteristics of poly-p-xylylene is the fact that the
aromatic ring is included in the polymer backbone. Poly-p-
xylylene is illustrated below:

C

This particular polymer is currently obtained by the vapor

phase polymerization of 2,2-paracyclophane.

In accordance with the present proposal, a similar material
useful as a carrier core coating in xerographic developers is
prepared by the high energy electron bombardment of divinyl
benzene. This bombardment produces a state of excitation in
the divinyl benzene so that a diradical is generated in the
solid state with subsequent polymerization into a three-
dimensional polymeric system or generated in the vapor state
with condensation and polymerization onto a suitable substrate
into a three-dimensional network polymer. The diradical
species resulting from the excitation of the divinyl benzene
by means of high energy electron bombardment is shown below:

*C C C-C.

Any groups attached to the aromatic ring would not be effected
by high energy, electron bombardment excitation since such
bombardment preferentially attacks the carbon double bond in
the vinyl group of the monomer.

Volume 3 Number 5 September/October 1978 309

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