JPS56109266A - Noncalcined pencil lead - Google Patents
Noncalcined pencil leadInfo
- Publication number
- JPS56109266A JPS56109266A JP1103680A JP1103680A JPS56109266A JP S56109266 A JPS56109266 A JP S56109266A JP 1103680 A JP1103680 A JP 1103680A JP 1103680 A JP1103680 A JP 1103680A JP S56109266 A JPS56109266 A JP S56109266A
- Authority
- JP
- Japan
- Prior art keywords
- noncalcined
- extender
- org
- mixt
- coloring matter
- 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.)
- Pending
Links
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
PURPOSE: To provide the noncalcined pancil lead which has high flexural strength, by a method wherein a coloring matter and an extender are treated with an org. titanate coupling agent and then blended.
CONSTITUTION: A coloring matter (e.g. carbon black or an org. pigment) and an extender (e.g. talc or calcium carbonate) are introduced into a high-speed powder mixer such as Henschel mixer, while mixing at ordinary temperatures, an org. titanate coupling agent (e.g. a monoalkoxy titanate or a coordinate titanate) is added dropwise to the mixt. Then a wax, a binder (a high-molecular material), a plasticizer and a solvent are added to the resulting mixt. of the surface-treated coloring matter and extender. The mixt. is kneaded to form a compsn. which is then molded to obtain the noncalcined pencil lead.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1103680A JPS56109266A (en) | 1980-02-01 | 1980-02-01 | Noncalcined pencil lead |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1103680A JPS56109266A (en) | 1980-02-01 | 1980-02-01 | Noncalcined pencil lead |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56109266A true JPS56109266A (en) | 1981-08-29 |
Family
ID=11766829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1103680A Pending JPS56109266A (en) | 1980-02-01 | 1980-02-01 | Noncalcined pencil lead |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56109266A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02173077A (en) * | 1988-12-24 | 1990-07-04 | Tombow Pencil Co Ltd | Stone marking chalk |
JP2005116525A (en) * | 2003-09-25 | 2005-04-28 | Ge Medical Systems Global Technology Co Llc | X-ray tube energy absorption device |
-
1980
- 1980-02-01 JP JP1103680A patent/JPS56109266A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02173077A (en) * | 1988-12-24 | 1990-07-04 | Tombow Pencil Co Ltd | Stone marking chalk |
JP2005116525A (en) * | 2003-09-25 | 2005-04-28 | Ge Medical Systems Global Technology Co Llc | X-ray tube energy absorption device |
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