JPS5755977A - Water-erasable lead for solid charlk and pencil - Google Patents

Water-erasable lead for solid charlk and pencil

Info

Publication number
JPS5755977A
JPS5755977A JP13113780A JP13113780A JPS5755977A JP S5755977 A JPS5755977 A JP S5755977A JP 13113780 A JP13113780 A JP 13113780A JP 13113780 A JP13113780 A JP 13113780A JP S5755977 A JPS5755977 A JP S5755977A
Authority
JP
Japan
Prior art keywords
water
solid
chalk
erasable
lead
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
Application number
JP13113780A
Other languages
Japanese (ja)
Other versions
JPS586757B2 (en
Inventor
Yoshi Matsui
Masaji Iwai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARUPAA KK
Original Assignee
ARUPAA KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ARUPAA KK filed Critical ARUPAA KK
Priority to JP55131137A priority Critical patent/JPS586757B2/en
Publication of JPS5755977A publication Critical patent/JPS5755977A/en
Publication of JPS586757B2 publication Critical patent/JPS586757B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE: To obtain a solid chalk giving writing easily erasable by water, containing a wax and an activator but no fillers, e.g., talc, clay, etc.
CONSTITUTION: A solid chalk (or chalk pencil lead) is formed by a procedure in which a mixture of an animal or vegetable wax, a mineral wax, and an activator which gives an affinity to water is fused, cast into a mold, and cooled. The solid chalk or chalk pencil lead may be mixed with a colorant[e.g., Co(SCN)2]which is easily decomposed and turns colorless in contact with water.
COPYRIGHT: (C)1982,JPO&Japio
JP55131137A 1980-09-20 1980-09-20 Solid Chiyako and Chiyako pencil lead that erases handwriting with water Expired JPS586757B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55131137A JPS586757B2 (en) 1980-09-20 1980-09-20 Solid Chiyako and Chiyako pencil lead that erases handwriting with water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55131137A JPS586757B2 (en) 1980-09-20 1980-09-20 Solid Chiyako and Chiyako pencil lead that erases handwriting with water

Publications (2)

Publication Number Publication Date
JPS5755977A true JPS5755977A (en) 1982-04-03
JPS586757B2 JPS586757B2 (en) 1983-02-05

Family

ID=15050850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55131137A Expired JPS586757B2 (en) 1980-09-20 1980-09-20 Solid Chiyako and Chiyako pencil lead that erases handwriting with water

Country Status (1)

Country Link
JP (1) JPS586757B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176526A (en) * 1983-03-24 1984-10-05 Shinpo Kk Multipurpose roaster
JPS60110772A (en) * 1983-11-21 1985-06-17 Fusa Matsui Chalk
JPH0191805U (en) * 1987-12-05 1989-06-16
US5352279A (en) * 1994-02-02 1994-10-04 Rapid Mounting & Finishing Co.-Cadaco Division Washable pavement chalk composition
JP2014091804A (en) * 2012-11-06 2014-05-19 Auto Kagaku Kogyo Kk Decoloration primer composition, construction method of sealant using the decoloration primer composition, construction method of waterproof material and construction method of topcoating material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912925A (en) * 1972-05-16 1974-02-04
JPS5037521A (en) * 1973-08-09 1975-04-08
JPS5134037A (en) * 1974-08-28 1976-03-23 Adger Kogyo Co Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912925A (en) * 1972-05-16 1974-02-04
JPS5037521A (en) * 1973-08-09 1975-04-08
JPS5134037A (en) * 1974-08-28 1976-03-23 Adger Kogyo Co Ltd

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176526A (en) * 1983-03-24 1984-10-05 Shinpo Kk Multipurpose roaster
JPH0233931B2 (en) * 1983-03-24 1990-07-31 Shinho Kk
JPS60110772A (en) * 1983-11-21 1985-06-17 Fusa Matsui Chalk
JPH0139703B2 (en) * 1983-11-21 1989-08-23 Fusa Matsui
JPH0191805U (en) * 1987-12-05 1989-06-16
US5352279A (en) * 1994-02-02 1994-10-04 Rapid Mounting & Finishing Co.-Cadaco Division Washable pavement chalk composition
JP2014091804A (en) * 2012-11-06 2014-05-19 Auto Kagaku Kogyo Kk Decoloration primer composition, construction method of sealant using the decoloration primer composition, construction method of waterproof material and construction method of topcoating material

Also Published As

Publication number Publication date
JPS586757B2 (en) 1983-02-05

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