EP0266697A2
Expired / Lapsed
EP
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Polymer for toner, process for preparation thereof and toner composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-10-30
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Granted: —
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Expires: 2007-10-30
Abstract
Abstract A polymer binder, in which the content of a residual monomer is not more than 200 ppm, generates a smell only to a very slight extent and provides a toner having an improved blocking resistance and resistance against a plasticizer for polyvinyl chloride. The polymer binder is prepared by maintaining a polymer suspension obtained by suspension polymerization at a temperature of not lower than the glass transition temperature of the polymer and distilling water in an amount of 5 to 60% by weight based on the amount of water present at the time of termination of the polymerization.
Inventors
- 👤 Sadao Kimura
- 👤 Ryo 10 301 Choeijutaku 100-Banchi Funato
- 👤 Keiji Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:41
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/001; C08F6/003; G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08702; G03G9/08784; G03G9/08797
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
19 words
A polymer binder for a toner, wherein the content of a residual monomer is not more than 200 ppm.
Claim 2
Dependent Claim
19 words
A polymer binder for a toner, wherein the content of a residual monomer is not more than 200 ppm.
Claim 3
Dependent Claim
17 words
The polymer binder according to claim 1, which has a glass transition temperature of 50° to 100°C.
Claim 4
Dependent Claim
49 words
The polymer binder according to claim 1, which is obtained by suspension polymerization of at least one monomer selected from the group consisting of aromatic vinyl compounds, acrylic acid esters, methacrylic acid esters, vinyl esters and vinyl cyanide compounds, or a monomer mixture predominantly composed of said selected monomer.
Claim 5
Dependent Claim
31 words
The polymer binder according to claim 1, which is obtained by suspension polymerization of a monomer mixture predominantly composed of an aromatic vinyl compound with an acrylic or methacrylic acid ester.
Claim 6
Dependent Claim
80 words
A process for the preparation of a polymer binder for a toner, which comprises maintaining a polymer suspension obtained by suspension polymerization at a temperature of not lower than the glass transition temperature of the polymer, and distilling water in an amount of 5 to 50% by weight based on the amount of water present at the time of termination of the polymerization to reduce the content of a residual monomer in the polymer to not more than 200 ppm.
Claim 7
Dependent Claim
80 words
A process for the preparation of a polymer binder for a toner, which comprises maintaining a polymer suspension obtained by suspension polymerization at a temperature of not lower than the glass transition temperature of the polymer, and distilling water in an amount of 5 to 50% by weight based on the amount of water present at the time of termination of the polymerization to reduce the content of a residual monomer in the polymer to not more than 200 ppm.
Claim 8
Dependent Claim
22 words
The process according to claim 1, wherein the polymer in the polymer suspension has a glass transition temperature of 50° to 100°C.
Claim 9
Dependent Claim
51 words
The process according to claim 1, wherein the polymer suspension is prepared by suspension polymerization of at least one monomer selected from the group consisting of aromatic vinyl compounds, acrylic acid esters, methacrylic acid esters, vinyl esters and vinyl cyanide compounds, or a monomer mixture predominantly composed of said selected monomer.
Claim 10
Dependent Claim
35 words
The process according to claim 5, wherein the polymer suspension is prepared by suspension polymerization of a monomer mixture predominantly composed of an aromatic compound with an acrylic acid ester or a methacrylic acid ester.
Claim 11
Dependent Claim
35 words
A toner composition comprising 80 to 95 parts by weight of a polymer binder having a residual monomer content of not more than 200 ppm, and 5 to 20 parts by weight of a pigment.
Claim 12
Dependent Claim
35 words
A toner composition comprising 80 to 95 parts by weight of a polymer binder having a residual monomer content of not more than 200 ppm, and 5 to 20 parts by weight of a pigment.
Claim 13
Dependent Claim
20 words
The toner composition according to claim 9 wherein the polymer binder has a glass transition temperature of 50° to 100°C.
Claim 14
Dependent Claim
52 words
The toner composition according to claim 9 wherein the polymer binder is obtained by suspension polymerization of at least one monomer selected from the group consisting of aromatic vinyl compounds, acrylic acid esters, methacrylic acid esters, vinyl esters and vinyl cyanide compounds, or a monomer mixture predominantly composed of said selected monomer.
Claim 15
Dependent Claim
37 words
The toner composition according to claim 9 wherein the polymer binder is obtained by suspension polymerization of a monomer mixture predominantly composed of an aromatic vinyl compound with an acrylic acid ester or a methacrylic acid ester.
Claim 16
Dependent Claim
80 words
The toner composition according to claim 9 wherein the polymer binder is prepared by maintaining a polymer suspension obtained by suspension polymerization at a temperature of not lower than the glass transition temperature of the polymer, and distilling water in an amount of 5 to 50% by weight based on the amount of water present at the time of termination of the polymerization to reduce the content of a residual monomer in the polymer to not more than 200 ppm.
Claim 17
Dependent Claim
23 words
The toner composition according to claim 9 wherein the polymer in the polymer suspension has a glass transition temperature of 50° to 100°C.
Claim 18
Dependent Claim
52 words
The toner composition according to claim 9 wherein the polymer suspension is prepared by suspension polymerization of at least one monomer selected from the group consisting of aromatic vinyl compounds, acrylic acid esters, methacrylic acid esters, vinyl esters and vinyl cyanide compounds, or a monomer mixture predominantly composed of said selected monomer.
References Cited (Backward Citations)
No citation records indexed.
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