GB2005692A - Preparation of finely comminuted particles of a polymer - Google Patents
Preparation of finely comminuted particles of a polymerInfo
- Publication number
- GB2005692A GB2005692A GB7837561A GB7837561A GB2005692A GB 2005692 A GB2005692 A GB 2005692A GB 7837561 A GB7837561 A GB 7837561A GB 7837561 A GB7837561 A GB 7837561A GB 2005692 A GB2005692 A GB 2005692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- polymer
- preparation
- finely comminuted
- comminuted particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/14—Powdering or granulating by precipitation from solutions
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Finely comminuted particles of an organic thermoplastic polymer are prepared by (1) dissolving the polymer in an excess of a solvent at a temperature above the melting point of the solvent, which solvent is solid at ambient temperature; (2) cooling the solution until it solidifies into a solid friable mass; (3) removing the solvent from the mass preferably by extraction into a second solvent and (4) recovering the polymer in the form of finely comminuted particles. By introducing powders at various stages in the preparation, particles can be prepared having powder dispersed throughout their mass and/or surface coating of powder. This preparation is particularly applicable in the production of toners for electrostatic reproduction purposes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/863,039 US4134585A (en) | 1976-03-26 | 1977-12-21 | Table tennis return board |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2005692A true GB2005692A (en) | 1979-04-25 |
GB2005692B GB2005692B (en) | 1982-06-23 |
Family
ID=25340088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7837561A Expired GB2005692B (en) | 1977-12-21 | 1978-09-21 | Prparation of finely comminuted particles of a polymer |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2005692B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402882A2 (en) * | 1989-06-14 | 1990-12-19 | Bando Chemical Industries, Limited | Master batch for production of toners used in electrophotography |
EP0412494A1 (en) * | 1989-08-09 | 1991-02-13 | Bando Chemical Industries, Limited | Master batch for production of toners used in electrophotography |
-
1978
- 1978-09-21 GB GB7837561A patent/GB2005692B/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0402882A2 (en) * | 1989-06-14 | 1990-12-19 | Bando Chemical Industries, Limited | Master batch for production of toners used in electrophotography |
EP0402882A3 (en) * | 1989-06-14 | 1991-01-16 | Bando Chemical Industries, Limited | Master batch for production of toners used in electrophotography |
EP0412494A1 (en) * | 1989-08-09 | 1991-02-13 | Bando Chemical Industries, Limited | Master batch for production of toners used in electrophotography |
Also Published As
Publication number | Publication date |
---|---|
GB2005692B (en) | 1982-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |