JPS623377Y2 - - Google Patents
Info
- Publication number
- JPS623377Y2 JPS623377Y2 JP14844179U JP14844179U JPS623377Y2 JP S623377 Y2 JPS623377 Y2 JP S623377Y2 JP 14844179 U JP14844179 U JP 14844179U JP 14844179 U JP14844179 U JP 14844179U JP S623377 Y2 JPS623377 Y2 JP S623377Y2
- Authority
- JP
- Japan
- Prior art keywords
- fine particles
- silicon oxide
- oxide fine
- pencil lead
- graphite
- 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.)
- Expired
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 239000010419 fine particle Substances 0.000 claims description 23
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000004606 Fillers/Extenders Substances 0.000 claims description 5
- 238000010304 firing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14844179U JPS623377Y2 (en]) | 1979-10-26 | 1979-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14844179U JPS623377Y2 (en]) | 1979-10-26 | 1979-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5665947U JPS5665947U (en]) | 1981-06-02 |
| JPS623377Y2 true JPS623377Y2 (en]) | 1987-01-26 |
Family
ID=29379574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14844179U Expired JPS623377Y2 (en]) | 1979-10-26 | 1979-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623377Y2 (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2423280B1 (en) * | 2009-04-24 | 2016-11-02 | Mitsubishi Pencil Co., Ltd. | Pencil lead and method for producing same |
-
1979
- 1979-10-26 JP JP14844179U patent/JPS623377Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5665947U (en]) | 1981-06-02 |
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