IP Library Granted Patent US 6,890,868
Granted Patent B2
US 6,890,868 · App. 10/273,896 · Granted May 10, 2005

Process for depositing gelable composition that includes dissolving gelable composition in liquid with agitating to disrupt gelling

Assignee: Xerox Corporation
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Quick Facts
Patent No.
US 6,890,868
App. No.
10/273,896
Granted
May 10, 2005
Kind
B2
Abstract

A process including: (a) selecting a composition including a polymer and a liquid, wherein the polymer exhibits lower solubility in the liquid at room temperature but exhibits greater solubility in the liquid at an elevated temperature, wherein the composition gels when the elevated temperature is lowered to a first lower temperature without agitation; (b) dissolving at the elevated temperature at least a portion of the polymer in the liquid; (c) lowering the temperature of the composition from the elevated temperature to the first lower temperature; (d) agitating the composition to disrupt any gelling, wherein the agitating commences at any time prior to, simultaneous with, or subsequent to the lowering the elevated temperature of the composition to the first lower temperature: (e) depositing a layer of the composition wherein the composition is at a second lower temperature lower than the elevated temperature; and (f) drying at least partially the layer.

Claims (14)

1. A process comprising:

selecting a composition including a polymer and a liquid, wherein the polymer exhibits lower solubility in the liquid at room temperature but exhibits greater solubility in the liquid at an elevated temperature, wherein the composition gels when the elevated temperature is lowered to a first lower temperature without agitation;

dissolving at the elevated temperature at least a portion of the polymer in the liquid;

lowering the temperature of the composition from the elevated temperature to the first lower temperature;

agitating the composition to disrupt any gelling, wherein the agitating commences at any time prior to, simultaneous with, or subsequent to the lowering the elevated temperature of the composition to the first lower temperature;

depositing via solution coating a layer of the composition wherein the composition is at a second lower temperature lower than the elevated temperature; and

drying at least partially the layer.

2. The process of claim 1 , wherein the polymer is a conjugated polymer.

3. The process of claim 1 , wherein the polymer is a polythiophene.

4. The process of claim 1 , further comprising adding a different liquid that is less capable of dissolving the polymer than the liquid.

5. The process of claim 1 , wherein the agitation is accomplished by employing ultrasonic vibration or homogenization.

6. The process of claim 1 , wherein the first lower temperature is room temperature.

7. The process of claim 1 , wherein the second lower temperature is room temperature.

8. The process of claim 1 , wherein the first lower temperature and the second lower temperature are the same.

Assignments (7)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 6, 2026
From: XEROX CORPORATION
To: GENESEE VALLEY INNOVATIONS, LLC
Reel/Frame 075020/0755 →
RELEASE OF SECURITY INTEREST IN PATENTS AT R/F 062740/0214 Recorded May 18, 2023
From: CITIBANK, N.A., AS AGENT
To: XEROX CORPORATION
Reel/Frame 063694/0122 →
SECURITY INTEREST Recorded Nov 10, 2022
From: XEROX CORPORATION
To: CITIBANK, N.A., AS AGENT
Reel/Frame 062740/0214 →
RELEASE OF SECURITY INTEREST Recorded Sep 7, 2022
From: JPMORGAN CHASE BANK, N.A. AS SUCCESSOR-IN-INTEREST ADMINISTRATIVE AGENT AND COLLATERAL AGENT TO JPMORGAN CHASE BANK
To: XEROX CORPORATION
Reel/Frame 066728/0193 →
RELEASE OF SECURITY INTEREST Recorded May 14, 2014
From: JPMORGAN CHASE BANK, N.A.
To: XEROX CORPORATION
Reel/Frame 032893/0391 →
SECURITY AGREEMENT Recorded Oct 31, 2003
From: XEROX CORPORATION
To: JPMORGAN CHASE BANK, AS COLLATERAL AGENT
Reel/Frame 015134/0476 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2002
From: WU, YILIANG; LIU, PING; ONG, BENG S.; MURTI, DASARAO K.
To: XEROX CORPORATION
Reel/Frame 013418/0273 →
Continuity (1)
Related Publication 20040075120A1 · Apr 22, 2004