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US 7,981,973 B2Granted
Toner process
AssigneeXerox Corporation
InventorsBarkev Keoshkerian, Raj Patel, Edward G. Zwartz, Cuong Vong
Life of this patent
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Abstract
The present disclosure relates to a process for latex preparation comprising a first heating of a latomer mixture comprising at least one free radical polymerizable monomer to low conversion and then adding at least one alkylene anhydride; a second heating of the latomer mixture to low conversion; a third heating of the latomer mixture to form polymeric particles; and combining at least one amine with the polymeric particles.
Claims8
A process for latex preparation comprising:
- a first heating of a latomer mixture comprising at least one free radical polymerizable monomer compound and then adding at least one alkylene anhydride;
- a second heating of the latomer mixture;
- a third heating of the latomer mixture to form polymeric particles;
- and combining at least one amine with the polymeric particles to aggregate and coalesce the polymeric particles,
- wherein the at least one free radical polymerizable monomer compound is present in the latomer mixture in an amount of from about 85% to about 99% by weight relative to the at least one alkylene anhydride;
- wherein the at least one alkylene anhydride is present in the latomer mixture in an amount of from about 0.1 to about 20% by weight relative to the at least one free radical polymerizable monomer compound;
- wherein the at least one amine is present in an amount of from about 0.5 to about 10% by weight relative to the amount of the polymeric particles;
- wherein the at least one amine is selected from the group consisting of polyetheramines, polyoxypropylenediamine, N-isopropyl-N′-phenyl-phenylene diamine, N-(1,3-dimethylbutyl)-N′-phenyl-phenylene-diamine, N,N′-di(2-octyl) -4-phenylene diamine, N,N′-bis(1,4-dimethylpentyl)-4-phenylene diamine, and dihydroxy tetraphenyl biphenylene diamine, and
- wherein the at least one free radical polymerizable monomer compound and the at least one alkylene anhydride react in a molar ratio of about 1:1.
6 more elements
Dependencies are inferred from the claim text.