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 pencilsInfo
- 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
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
- C09D151/00—Coating 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.
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) | ES358800A1 (en) |
FR (1) | FR1585326A (en) |
GB (1) | GB1235303A (en) |
NL (1) | NL157931B (en) |
SE (1) | SE354477B (en) |
Families Citing this family (4)
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 |
-
1967
- 1967-10-04 DE DE19671669158 patent/DE1669158A1/en not_active Withdrawn - After Issue
-
1968
- 1968-09-24 GB GB4522268A patent/GB1235303A/en not_active Expired
- 1968-09-24 AT AT930168A patent/AT284996B/en not_active IP Right Cessation
- 1968-10-03 CH CH1479668A patent/CH522026A/en not_active IP Right Cessation
- 1968-10-03 SE SE1338068A patent/SE354477B/xx unknown
- 1968-10-04 ES ES358800A patent/ES358800A1/en not_active Expired
- 1968-10-04 JP JP43071948A patent/JPS4818900B1/ja active Pending
- 1968-10-04 NL NL6814262A patent/NL157931B/en unknown
- 1968-10-04 BE BE721838D patent/BE721838A/xx unknown
- 1968-10-04 FR FR1585326D patent/FR1585326A/fr not_active Expired
- 1968-10-04 ES ES358799A patent/ES358799A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT284996B (en) | 1970-10-12 |
NL157931B (en) | 1978-09-15 |
NL6814262A (en) | 1969-04-09 |
BE721838A (en) | 1969-03-14 |
DE1669158A1 (en) | 1970-12-17 |
FR1585326A (en) | 1970-01-16 |
SE354477B (en) | 1973-03-12 |
JPS4818900B1 (en) | 1973-06-09 |
ES358800A1 (en) | 1970-05-01 |
CH522026A (en) | 1972-04-30 |
ES358799A1 (en) | 1970-06-01 |
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