Browse Prior Art Database

LIQUID DEVELOPERS

IP.com Disclosure Number: IPCOM000023163D
Original Publication Date: 1976-Dec-31
Included in the Prior Art Database: 2004-Mar-27
Document File: 4 page(s) / 610K

Publishing Venue

Xerox Disclosure Journal

Abstract

Liquid developers useful in the development of electrostatic latent images may be prepared by incorporating into the carrier liquid pigment which has grafted onto its surface the polymerization product of at least one acrylic ester.

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XEROX DISCLOSURE JOURNAL

LIQUID DEVELOPERS Proposed Classification tasuo Tamai U.S. Cl. 252/62.1
Satoru Honjo Int. Cl. G03g 9/00
Syu Watarai
Histake Ono

Liquid developers useful in the development of electrostatic
latent images may be prepared by incorporating into the
carrier liquid pigment which has grafted onto its surface
the polymerization product of at least one acrylic ester.

A generalized formula for monomers within this disclosure is

R

a-

H- C=C -C

I ~0R' H

Acrylic ester monomers which may be employed in the graft polymerization are those synthesized from at least one long
chain unsaturated alcohol, such as:
hexenol, CH

        3 CHaCHCH CE OH; citronellol al~ohol, (~Hj~,C=CH(CE

                          2OH; erucyl alcohoL d ICE ) CHa&1~CH ) CH OH; geraniol, (CE

) ,CH (CH 3)CH2CHOH;

2oleyl alcohol, CH

dodecenol, CH

2(CE~,),CHSCE(CE)7CfiOH;

          2=CEXCH 7 CE OH;
2eicosenol, CE (CE ) &HCH~CH ) CH

) 2C=& (CA2 72C (CH ) &~ê1oA;

3linalool, (CE ) C=CH(CH ) C(OHhCE

3)CA-CH

linoleyl alcoiloI, ~ (d,?

                  1CE=CECE9CE=CE (&E,) ,CE.)OE; among others * These long ehaifi i3nsaturated alcoh8lé mAy be con-
verted into the ester monomers by ester interchange with lower esters of acrylic acid or acrylic acid derivative.

Ester monomers having linear unsaturated alkyl radicals which may be employed are the hexenol esters of acrylic acid, methacrylic acid, and c( - ethylacrylic acid, the dodecenol esters of acrylic acid, methacrylic acid, and 2( - ethyl- acrylic acid, the oleyl alcohol esters of acrylic acid, methacrylic acid and 4 - ethylacrylic acid, the erucyl alcohol esters of acrylic acid, methacrylic acid and ethyl- acrylic acid, the linolely alcohol esters of acrylic acid,

Volume 1 Numbers 11/12 November/December 1976 47

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a a

LIQUID DEVELOPERS (Cont'd)

methacrylic acid and °( - ethylacrylic acid and the like.

Monomers having branched mono-unsaturated alkyl radicals which can be employed are the citronellol esters of acrylic
acid, methacrylic acid, ~ - ethylacrylic acid and cc -

propylacrylic acid, etc.

Examples of monomers having branched di-unsaturated alkyl radicals which can be employed in the present invention are
the general esters of acrylic acid, methacrylic acid and
ethylacrylic acid, the linalool esters of acrylic acid,
methacrylic acid and at - ethylacrylic acid, etc.

The acrylic ester monomers can be polymerized individually
or mixtures of said monomers can be copolymerized when
grafted to the surface of the pigment. The liquid developer of the present invention containing the graft polymerized
toner having long chain unsaturated alkyl group, is charac-
terized as an extreme...