GB1235303A - Thermoplastic binders for continuously produced leads for pencils, copying pencils and coloured pencils - Google Patents

Thermoplastic binders for continuously produced leads for pencils, copying pencils and coloured pencils

Info

Publication number
GB1235303A
GB1235303A GB4522268A GB4522268A GB1235303A GB 1235303 A GB1235303 A GB 1235303A GB 4522268 A GB4522268 A GB 4522268A GB 4522268 A GB4522268 A GB 4522268A GB 1235303 A GB1235303 A GB 1235303A
Authority
GB
United Kingdom
Prior art keywords
styrene
acrylonitrile
ethylene
pencils
copolymer
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
GB4522268A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1235303A publication Critical patent/GB1235303A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D151/00Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (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

1,235,303. Pencil leads. FARBENFABRIKEN BAYER A.G. 24 Sept., 1968 [4 Oct., 1967], No. 45222/68. Heading B6P. [Also in Division C3] A pencil lead comprises graphite or a colouring agent and (A) 1 to 100 parts by weight of a graft polymer of (a) an ethylene-vinyl acetate copolymer, and (b) grafted-on vinyl chloride, which graft polymer may be at least partially replaced by copolymer (a); and (B) 99 to 0 parts of a polymer comprising (a) a butadiene polymer optionally containing up to 30% by weight of copolymerized styrene, acrylonitrile or isoprene or up to 70% of a C 1 to C 6 -alkyl acrylate or methacrylate or an alkyl vinyl ether and (b) a copolymer of styrene and acrylonitrile in a weight ratio of 95: 5 to 50: 50, wherein these two monomers may be at least partially replaced by their respective alkyl derivatives, or by methyl methacrylate, the styrene and acrylonitrile being polymerized either separately from the butadiene polymer, or wholly or in part in the presence thereof. Examples are given in which leads are extruded from compositions comprising (i) (A) ethylene-vinyl acetate copolymer grafted with vinyl chloride, optionally (B) polybutadiene grafted with styrene and acrylonitrile, alone or together with additional styrene - acrylonitrile copolymer, a C 15 - alkylphenol sulphonate, barium cadmium laurate, ethylene diamine bis-stearamide and graphite; (ii) (A) ethylene-vinyl acetate copolymer; (B) as in (i), benzyl octyl adipate, calcium stearate and graphite; (iii) (A) ethylene-vinyl acetate copolymer, ethylene diamine bis-stearamide dibutyl phthalate and graphite; (iv) (A), (B) and the sulphonate and laurate as in (i), cadmium sulphide selenide pigment and talc; and (v) (A) as in (i), (B) butadiene-styrene copolymer grafted with styrene and acrylonitrile, barium cadmium laurate, dibutyl phthalate, ethylene diamine bis-stearamide and graphite.
GB4522268A 1967-10-04 1968-09-24 Thermoplastic binders for continuously produced leads for pencils, copying pencils and coloured pencils Expired GB1235303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0053672 1967-10-04

Publications (1)

Publication Number Publication Date
GB1235303A true GB1235303A (en) 1971-06-09

Family

ID=7106509

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4522268A Expired GB1235303A (en) 1967-10-04 1968-09-24 Thermoplastic binders for continuously produced leads for pencils, copying pencils and coloured pencils

Country Status (10)

Country Link
JP (1) JPS4818900B1 (en)
AT (1) AT284996B (en)
BE (1) BE721838A (en)
CH (1) CH522026A (en)
DE (1) DE1669158A1 (en)
ES (2) ES358799A1 (en)
FR (1) FR1585326A (en)
GB (1) GB1235303A (en)
NL (1) NL157931B (en)
SE (1) SE354477B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49138700U (en) * 1973-03-26 1974-11-28
JPS51122179U (en) * 1975-03-29 1976-10-04
JPS5624877Y2 (en) * 1975-03-31 1981-06-11
JPS54115922A (en) * 1978-02-22 1979-09-08 Sakura Color Prod Corp Erasable crayon

Also Published As

Publication number Publication date
AT284996B (en) 1970-10-12
DE1669158A1 (en) 1970-12-17
CH522026A (en) 1972-04-30
SE354477B (en) 1973-03-12
NL157931B (en) 1978-09-15
JPS4818900B1 (en) 1973-06-09
ES358799A1 (en) 1970-06-01
ES358800A1 (en) 1970-05-01
NL6814262A (en) 1969-04-09
FR1585326A (en) 1970-01-16
BE721838A (en) 1969-03-14

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