Toner compositions and processes

Patent metadata

Field	Value
Publication number	US-2017038696-A1
Application number	US-201514821624-A
Country	US
Kind code	A1
Filing date	Aug 7, 2015
Priority date	Aug 7, 2015
Publication date	Feb 9, 2017
Grant date	—

Abstract

Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.

First claim

1 . A toner composition comprised of an amorphous polyester resin, a crystalline polyester resin selected from the group consisting of poly(1,6-hexylene-1,12-dodecanoate), poly(1,9-nonylene-succinate), and poly(1,6-hexylene-succinate), a colorant, and a wax, and which amorphous polyester is generated by the catalytic polymerization of monomers selected from the group consisting of a carboxylic acid, a dicarboxylic acid, and a benzenetricarboxylic acid, at least one bisphenol and a component selected from the group consisting of at least one of a dodecylsuccinic anhydride and a dodecylsuccinic acid, and wherein said amorphous polyester resin contains from about 9.5 weight percent to about 12.8 weight percent of said component based on the weight percent of said amorphous polyester and said component.

2 . A toner in accordance with claim 1 wherein said component is dodecylsuccinic anhydride, said carboxylic acid is terephthalic acid, said dicarboxylic acid is fumaric acid, and said benzenetricarboxylic acid is trimellitic acid and wherein said crystalline polyester is poly(1,6-hexylene-1,12-dodecanoate).

3 . A toner in accordance with claim 1 wherein said component is dodecylsuccinic anhydride and wherein said crystalline polyester is poly(1,9-nonylene-succinate).

4 . A toner in accordance with claim 1 wherein said carboxylic acid is terephthalic acid, said dicarboxylic acid is fumaric acid, said benzenetricarboxylic acid is trimellitic acid, said at least one bisphenol is a P-bisphenol A of 1,4-bis(2-(4-hydroxyphenyl)-2-propyl)benzene, an E-bisphenol A of 1,1-bis(4-hydroxyphenyl)ethane, and mixtures thereof.

5 . A toner in accordance with claim 1 wherein said carboxylic acid is terephthalic acid, said dicarboxylic acid is fumaric acid, said crystalline polyester is poly(1,6-hexylene-1,12-dodecanoate), and said component is dodecylsuccinic anhydride.

6 . A toner in accordance with claim 1 wherein at least one bisphenol is comprised of a mixture of 1,4-bis(2-(4-hydroxyphenyl)-2-propyl)benzene, and 1,1-bis(4-hydroxyphenyl)ethane.

7 . A toner in accordance with claim 1 wherein said crystalline resin polyester is poly(1,6-hexylene-1,12-dodecanoate)

8 . A toner in accordance with claim 1 wherein the amorphous polyester resin is selected from the group consisting of poly(propoxylated bisphenol co-fumarate), poly(ethoxylated bisphenol co-fumarate), poly(butyloxylated bisphenol co-fumarate), poly(co-propoxylated bisphenol co-ethoxylated bisphenol co-fumarate), poly(1,2-propylene fumarate), poly(propoxylated bisphenol co-maleate), poly(ethoxylated bisphenol co-maleate), poly(butyloxylated bisphenol co-maleate), poly(co-propoxylated bisphenol co-ethoxylated bisphenol co-maleate), poly(1,2-propylene maleate), poly(propoxylated bisphenol co-itaconate), poly(ethoxylated bisphenol co-itaconate), poly(butyloxylated bisphenol co-itaconate), poly(co-propoxylated bisphenol co-ethoxylated bisphenol co-itaconate), poly(1,2-propylene itaconate), a copoly(propoxylated bisphenol A co-fumarate)-copoly(propoxylated bisphenol A co-terephthalate), a terpoly(propoxylated bisphenol A co-dodecylsuccinate)-terpoly(propoxylated bisphenol A co-terephthalate)-terpoly(propoxylated bisphenol A co-dodecylsuccinate), and mixtures thereof.

9 . A toner in accordance with claim 8 wherein the crystalline polyester resin is poly(1,6-hexylene-1,12-dodecanoate) present in an amount of from about 5 to about 12 weight percent of solids, and wherein said component is dodecylsuccinic anhydride.

10 . A toner in accordance with claim 1 wherein the amorphous polyester resin is a copoly(propoxylated bisphenol A co-fumarate)-copoly(propoxylated bisphenol A co-terephthalate), or a terpoly(propoxylated bisphenol A co-dodecylsuccinate)-terpoly(propoxylated bisphenol A co-terephthalate)-terpoly-(propoxylated bisphenol A co-dodecylsuccinate), and the crystalline polyester is poly(1,6-hexylene-1,12-dodecanoate).

11 . A toner in accordance with claim 1 wherein the amorphous polyester resin is terpoly-(propoxylated bisphenol A—terephthalate)-terpoly-(propoxylated bisphenol A—dodecenylsuccinate)-terpoly-(propoxylated bisphenol A—fumarate)-(propoxylated bisphenol A-trimellitate).

12 . A toner in accordance with claim 1 wherein said wax is a polyolefin.

13 . A toner in accordance with claim 1 wherein said wax is polyethylene, polypropylene, or mixtures thereof.

14 . A toner in accordance to claim 1 wherein said wax is present in an amount of from about 1 to about 10 weight percent of the solids.

15 . A toner in accordance with claim 1 wherein said wax is contained in said amorphous polyester resin and said crystalline polyester resin, and optionally on the toner surface.

16 . A toner in accordance with claim 1 wherein said colorant is a pigment optionally selected from at least one of carbon black, cyan, magenta, yellow, and mixtures thereof.

17 . A toner in accordance with claim 1 wherein said toner is comprised of a core of said amorphous polyester resin, said crystalline polyester resin, wax, and said colorant, and at least one shell comprised of said amorphous polyester resin, said wax, and optionally said colorant.

18 . A toner in accordance with claim 1 with a blocking temperature of from about 52° C. to about 55° C.

19 . A toner composition comprised of a core of an amorphous polyester resin, a crystalline polyester, a wax and a colorant, and at least one shell encasing said core, and which shell is comprised of an amorphous polyester resin, and optionally a wax, and which amorphous polyester for said core and said shell is generated by the catalytic polymerization of monomers of a carboxylic acid, a dicarboxylic acid, a benzenetricarboxylic acid, at least one bisphenol and a dodecylsuccinic anhydride or a dodecylsuccinic acid, and wherein said amorphous polyester resin contains in excess of zero percent of said dodecylsuccinic anhydride or wherein said amorphous polyester resin contains in excess of zero percent of said dodecylsuccinic acid, and wherein said amorphous polyester contains less than 16 weight percent of said dodecylsuccinic acid, or wherein said amorphous polyester resin contains less than 16 weight percent of said dodecylsuccinic acid and wherein said crystalline polyester resin is selected from the group consisting of poly(1,6-hexylene-1,12-dodecanoate), poly(1,9-nonylene-succinate), and poly(1,6-hexylene-succinate).

20 . A toner composition in accordance with claim 19 wherein the amorphous polyester resin is a copoly(propoxylated bisphenol A co-fumarate)-copoly(propoxylated bisphenol A co-terephthalate), a terpoly(propoxylated bisphenol A co-dodecylsuccinate)-terpoly(propoxylated bisphenol A co-terephthalate)-terpoly-(propoxylated bisphenol A co-dodecylsuccinate); the crystalline polyester is poly(1,6-hexylene-1,12-dodecanoate); the colorant is a pigment, and wherein said amorphous polyester resin contains from about 8 weight percent to about 15 weight percent of said dodecylsuccinic anhydride, or wherein said amorphous polyester resin contains from about 9.5 weight percent to about 12.8 weight percent of said dodecylsuccinic acid.

21 . A toner composition in accordance with claim 19 wherein said toner has a blocking temperature of from about 52° C. to about 55° C., said crystalline polyester is poly(1,6-hexylene-1,12-dodecanoate, and which toner is prepared by emulsion/aggregation/coalescence processes.

22 . A toner composition in accordance with claim 19 wherein said amorphous resin is present i

Assignees

• Xerox Corp

Inventors

• Sacripante Guerino G
• Zhou Ke
• Hawkins Michael S
• Zwartz Edward G

Classifications

• G03G9/083

  Magnetic toner particles · CPC title

• G03G9/09335

  Non-macromolecular organic compounds · CPC title

• G03G9/08797

  characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature · CPC title

• G03G9/09328

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• G03G9/08755 Primary

  Polyesters · CPC title