GB1024707A - Improvements in or relating to writting elements for pencils - Google Patents

Improvements in or relating to writting elements for pencils

Info

Publication number
GB1024707A
GB1024707A GB1039764A GB1039764A GB1024707A GB 1024707 A GB1024707 A GB 1024707A GB 1039764 A GB1039764 A GB 1039764A GB 1039764 A GB1039764 A GB 1039764A GB 1024707 A GB1024707 A GB 1024707A
Authority
GB
United Kingdom
Prior art keywords
march
alkaline earth
pencils
composition
carbonate
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
Application number
GB1039764A
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.)
Hassenfeld Bros Inc
Original Assignee
Hassenfeld Bros Inc
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 Hassenfeld Bros Inc filed Critical Hassenfeld Bros Inc
Publication of GB1024707A publication Critical patent/GB1024707A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

1,024,707. Pencil lead and crayon composition. HASSENFELD BROS. Inc. March 11, 1964 [March 11, 1963], No. 10397/64. Heading B6P. A composition for a writing element for pencils comprises (1) marking material, which may be an insoluble pigment 5-14% or graphite 25-80%, optionally with 1% stabilizer, e.g. alkaline earth metal soap, resinate, oxide, carbonate or aromatic amines, (2) a heavy metal or alkaline earth salt of a fatty acid 5-30%, e.g. calcium stearate, magnesium stearate or a ricinoleate, (3) thermoplastic resin of colloidal particle size, i.e. from 0À01 to 3 microns, in water dispersion, 5-45%, e.g. a polyvinyl chloride or acetate latex, polyethylene emulsion, ethyl cellulose, polypropylene or cuomorone-indene resin, and in the case of coloured lead (4) a filler or extender, 45-54%, e.g. talc, clay or calcium carbonate.
GB1039764A 1963-03-11 1964-03-11 Improvements in or relating to writting elements for pencils Expired GB1024707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26407063A 1963-03-11 1963-03-11

Publications (1)

Publication Number Publication Date
GB1024707A true GB1024707A (en) 1966-04-06

Family

ID=23004434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1039764A Expired GB1024707A (en) 1963-03-11 1964-03-11 Improvements in or relating to writting elements for pencils

Country Status (1)

Country Link
GB (1) GB1024707A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013023261A1 (en) * 2011-08-15 2013-02-21 Ebras Comercio De Lápis Ltda. Formulation for producing a writing article, process for manufacturing a writing article and a writing article
CN112513206A (en) * 2018-08-17 2021-03-16 派通株式会社 Pencil lead

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013023261A1 (en) * 2011-08-15 2013-02-21 Ebras Comercio De Lápis Ltda. Formulation for producing a writing article, process for manufacturing a writing article and a writing article
CN112513206A (en) * 2018-08-17 2021-03-16 派通株式会社 Pencil lead
CN112513206B (en) * 2018-08-17 2023-02-17 派通株式会社 Pencil lead

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