Browse Prior Art Database

POLYOLEFIN-BASED LIQUID DEVELOPMENT INKS

IP.com Disclosure Number: IPCOM000027108D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 84K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a liquid immersion development (LID) toner wherein a polyolefin resin is selected to enable, for example, excellent transfixing. A variety of semi-crystalline and ionomeric polyolefins were prepared or identified which show promising performance as the chief resin component in liquid development inks. Polyolefin materials, previously shown useful in dry inversion xerographic toners, are also well suited for use in liquid developers. Best materials show thermal events between 50 and 100°C when analyzed with differential scanning calorimetry. The liquid developers were prepared by shot mill attrition of resin with colorant and charge director in hydrocarbon media, for example, ISOPAR L or NORPAR 15 first at elevated temperatures, near about 80"C, and then near about 25°C.

This text was extracted from a PDF file.
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This is the abbreviated version, containing approximately 62% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

POLYOLEFIN-BASED LIQUID Proposed Classification DEVELOPMENT INKS U.S. C1.355/256 Timothy J. Fuller
G30g C1. Int. William M. Prest, Jr. 15/06

-CH2 -CH

- -CH2 -CH - -CH2 -CH - -CH2 -CH -

I

I

I I I

I

I I I

I

(CH2)"

(CH2)8

CH2

(CH2)8

(CH2)8

CH2

0

H

I

c=o

0

H

R

I I

I

- CH2 -CH - -(CHz)n-CH =CH- -(CHl)n-CH -CH - -CH2 -CH -

I \/ 0

CH

c=o

I I

II

CH2 0

-CH2 -CH=C-CH2- -CH2 -CH -

I

OAc

I H

I

CH3

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 March/April 1995 177

[This page contains 1 picture or other non-text object]

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POLYOLEFIN-BASED LIQUID DEVELOPMENT INKS (Cont'd)

Disclosed is a liquid immersion development (LID) toner wherein a polyolefin resin is selected to enable, for example, excellent transfixing. A variety of semi-crystalline and ionomeric polyolefins were prepared or identified which show promising performance as the chief resin component in liquid development inks. Polyolefin materials, previously shown useful in dry inversion xerographic toners, are also well suited for use in liquid developers. Best materials show thermal events between 50 and 100°C when analyzed with differential scanning calorimetry. The liquid developers were prepared by shot mill attrition of resin with colorant and charge director in hydrocarbon media, for example, ISOPAR L or NORPAR 15 first at elevated temperatures, near about 80"C, and then near about 25°C.

Polyolefin copolymers with the structural repeat units 1-10 show promise as the principle resin co...