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Browse Prior Art Database

PREPARATION OF A TWO PHASE POLYMER TRANSPORT LAYER

IP.com Disclosure Number: IPCOM000023507D
Original Publication Date: 1977-Dec-31
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 281K

Publishing Venue

Xerox Disclosure Journal

Abstract

There is described a method for reinforcing brittle photocon-ductive polymeric layers in order to enhance the mechanical properties thereof. According to this process, a layer of a crosslinked polymeric material (polymer I) is swollen by the monomer (monomer II) of the second reinforcing polymer (polymer II) and then monomer II is simultaneously polymer ized and crosslinked in situ. While monomer II is obviously compa-tible with polymer I, this compatibility usually disappears due to polymerization and polymer II will separate within the polymer I matrix as a separate phase, Because both polymers I and II respectively are crosslinked, both phases remain con-tinuous even if very low concentrations are involved.

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XEROX DISCLOSURE JOURNAL

PREPARATION OF A TWO PHASE Proposed Classification
POLYMER TRANSPORT LAYER U.S. Cl. 96/1.5
Jan Bares mt. Cl. GO3g 5/04

There is described a method for reinforcing brittle photocon-
ductive polymeric layers in order to enhance the mechanical
properties thereof. According to this process, a layer of a
crosslinked polymeric material (polymer I) is swollen by the
monomer (monomer II) of the second reinforcing polymer
(polymer II) and then monomer II is simultaneously polymer ized
and crosslinked in situ. While monomer II is obviously compa-
tible with polymer I, this compatibility usually disappears
due to polymerization and polymer II will separate within the
polymer I matrix as a separate phase, Because both polymers I
and II respectively are crosslinked, both phases remain con-
tinuous even if very low concentrations are involved.

Therefore, a low concentration of the rubbery phase can be
made to form a continuous matrix.

In one embodiment, a first solution is prepared from a monomer
of the b.rittle polymer (monomer I) , a crosslinkirig agent, an
initiator which can be activated thermally or by radiation and
a solvent (solvent I) . A second solution (solution II) is
prepared from a monomer of a reinforcing polymer (monomer II)

a crosslinking agent, an initiator (initiator II) and a
solvent (solvent II) . A substrate is then coated with the
first solution and polymerization carried out in situ. As a
result, polymer I swollen by solvent I is o5I~~. This
polymeric...