AU2010275853A1 - Writing substance for writing, drawing and/or painting tools - Google Patents
Writing substance for writing, drawing and/or painting tools Download PDFInfo
- Publication number
- AU2010275853A1 AU2010275853A1 AU2010275853A AU2010275853A AU2010275853A1 AU 2010275853 A1 AU2010275853 A1 AU 2010275853A1 AU 2010275853 A AU2010275853 A AU 2010275853A AU 2010275853 A AU2010275853 A AU 2010275853A AU 2010275853 A1 AU2010275853 A1 AU 2010275853A1
- Authority
- AU
- Australia
- Prior art keywords
- writing
- writing substance
- polymer
- bound
- coconut
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
-
- 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
The invention relates to a polymer-bound writing substance for writing, drawing and/or painting tools, particularly for pencils or colored pencils, comprising at least one polymer bonding agent, at least one wax, and at least one filler material, wherein the writing substance is further provided with 0.1 to 5 wt % of palm kernel oil, and/or coconut butter, and/or coconut oil, and/or oleic acid.
Description
WO 2011/009535 Al GRP-P S34/PCiT-AU WRITING SUBSTANCE FOR WRITING, DRAWING AND/OR PAINTING TOOLS The invention relates to polymer-bound writing substances for writing, drawing and/or painting tools. Such writing substances for writing, drawing and/or painting are known in principle. "Polymer-bound graphite-based writing substances for writing, drawing and/or painting" are understood to be writing substances which are inserted rigidly into wood or other materials which can be sharpened, and also writing substances which are held displaceably in a rigid casing. Examples of this include wood-cased pencils and writing substances for mechanical pencils, for example 'retractable pencils'. In this case the writing substances normally have an outer diameter in the range of approximately 0.3 mm to 6 mm. For example, polymer-bound graphite writing substances are known from DE 38 27 968 C1. Such raw writing substances contain a polymer bonding agent, lubricants and fillers. A drawback in the production of such writing substances is that although the writing and painting properties thereof are very good with a high filler material content of more than 50 wt. %, the viscosity of the writing substance mass during extrusion is very high and the extrusion pressure thus required in the die and in the extruder reaches very high values. The head pressure is approximately 350 bar. This is disadvantageous since a greater dimensioning of the extruder and complex configuration are required. The service life of the equipment and dies is much reduced by the high extrusion pressure.
- 2 The object of the invention is therefore to provide a writing substance for writing, drawing and/or painting which does not have the aforementioned drawbacks and which can be produced at low extrusion pressure. The object is achieved for polymer-bound writing substances for writing, drawing or painting tools, in particular for pencils or coloured pencils, comprising at least one polymer bonding agent, at least one wax, and at least one filler material, in that the writing substance further comprises 0.1 to 5 wt. % of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid. It has surprisingly been found that an inner lubricant is added to the formulation by the selective addition of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid as a writing substance component, significantly reducing the extrusion pressure in the extruder. The addition of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid in the writing substance composition leads in particular with extrusion to a considerable reduction in the pressing or extrusion pressure at the mouthpiece or head of the extruder. The pressure decreases with increased addition of palm kernel oil, and/or coconut oil, and/or coconut butter and/or oleic acid, wherein a reduction in pressure by at least 30 %, in particular by at least 50 % compared to conventional extrudable writing substance compositions is achieved. It has been found that other natural or synthetic oils also reduce the pressure in the extruder, but that these are overproportionately detrimental to the strength of the extruded writing substance. Surprisingly, this is not the case with use of palm - 3 kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid, since the pressure in the extruder is low, yet the strength of the writing substance is provided to the required extent. The addition of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid also provides a more intense colour of the stroke of the writing substance and improves the sliding behaviour thereof when writing. In the case of pencil writing substances, a deep stroke of high density is demonstrated, whilst coloured pencil writing substances exhibit a deep, bright intense shade of the stroke. The proportion of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid in the writing substance composition lies in the range of 0.1 to 5 wt. %, in particular in the range of 0.5 to 2.5 wt. %. If the content of palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid exceeds the aforementioned limit of 5 wt. %, the strength of the writing substance will be overproportionately reduced. The writing substances then tend to crumble or break during use. At 20 0 C, the waxes used are ductile, compact to brittle, have a coarse to finely crystalline structure, are translucent to opaque in terms of colour, but are not glassy and melt above 40 0 C without decomposition. They are free-flowing slightly above the melting point and have a largely temperature-dependent consistency and solubility. The writing substances according to the invention are raw writing substances which can be used immediately after extrusion without further heat treatment or impregnation.
- 4 In addition to pencil and coloured pencil writing substances, special writing substances such as writing substances for "carpenter's pencils" are also cited. Advantageous embodiments emerge from the dependent claims. It has proven to be advantageous if the polymer-bound writing substance comprises 10 to 30 wt. % polymer bonding agent 2 to 25 wt. % wax 0.1 to 5 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder filler material(s). In particular, it is preferable if the polymer-bound writing substance comprises 15 to 25 wt. % bonding agent 4 to 20 wt. % wax 0.5 to 2.5 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder filler material(s). It has been proven to be useful if the at least one bonding agent is formed of at least one polymer of the group comprising polystyrene (PS), styrene acrylonitrile (SAN), styrene-butadiene (SB), polyolefins (PO) and acrylonitrile butadiene styrene (ABS). Mixtures of two or more bonding agents may also be used.
- 5 It has also proven to be useful if the at least one wax is at least one wax from the group comprising stearates, montan waxes, amide waxes and paraffins. Mixtures of two or more waxes may also be used. It is particularly preferable if the at least one wax is formed of calcium stearate or comprises calcium stearate. The at least one filler material is advantageously formed of at least one filler material of the group comprising graphite, soot, hexagonal boron nitride, layered silicates, chalk, baryte, coloured pigments and uncoloured pigments. For pencil writing substances, graphite or graphite in combination with soot as a chromophoric filler material is preferred in particular. For coloured pencil writing substances, combinations of white or colourless filler, such as hexagonal boron nitride, layered silicates, etc., with chromophoric pigments such as azo pigments, phthalocyanines, dioxazines, quinacridones, iron oxides, soot, graphites, ultramarine or iron cyano complexes have proven to be of use. A preferred composition for a pencil writing substance comprises: 15 to 25 wt. % bonding agent 4 to 12 wt. % wax 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder graphite or graphite and soot. In particular, a pencil writing substance comprises: 15 to 25 wt. % polystyrene (PS) -6 4 to 12 wt. % calcium stearate 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder graphite or graphite and soot. An exemplary formulation 1 for a pencil writing substance comprises: polystyrene (PS) 21 wt. % calcium stearate 6 wt. % oleic acid 1.0 wt. % graphite remainder. An exemplary formulation 2 for a pencil writing substance comprises: polystyrene (PS) 20.5 wt. % calcium stearate 6 wt. % coconut oil 1.5 wt. % graphite remainder. The reduction in extrusion pressure in the extruder head during production of a pencil writing substance according to the invention in accordance with formulation 1 compared to an extruded pencil writing substance according to the prior art is illustrated in the Table below. Pencil writing Writing substance of substances formulations 1 according to the and 2 prior art Pressure in the < 200 350-450 extruder head (in bar) It can clearly be seen that writing substances which are formed in accordance with the inventive composition - 7 require much lower extrusion pressures for production. Equipment and die service life is extended and equipment design is simplified. An exemplary formulation 3 for a pencil writing substance comprises: styrene-acrylonitrile (SAN) 15 wt. % aluminium stearate 10 wt. % coconut oil 2 wt. % graphite remainder. An exemplary formulation 4 for a pencil writing substance contains: polystyrene (PS) 15 wt. % aluminium stearate 10 wt. % coconut oil 1 wt. % palm kernel oil 1 wt. % graphite remainder. A preferred composition for a coloured pencil writing substance comprises: 15 to 25 wt. % bonding agent 4 to 12 wt. % wax 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder layered silicate(s) and/or hexagonal boron nitride as well as at least one coloured pigment and/or an uncoloured pigment. In particular, a coloured pencil writing substance comprises: 15 to 25 wt. % polystyrene (PS) 4 to 12 wt. % montan wax - 8 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder talc and/or hexagonal boron nitride as well as at least one coloured pigment and/or an uncoloured pigment. Extrusion has proven to be a useful method for producing a polymer-bound writing substance according to the invention. The writing substance according to the invention is produced in particular by carrying out the steps detailed below: - mixing and granulating all formulation components of the writing substance to form a writing substance granulate; - extruding the writing substance granulate at a temperature in the range of 130 to 200 0 C on an extruder by a suitable mouthpiece to form endless writing substance strands. - cooling and hardening the endless writing substance strand; and - cutting the endless writing substance strand to final lengths, in particular to the required pencil length; Depending on the extrusion head, the cross-section of the writing substance may adopt any shape - round, square or combinations thereof. Furthermore, it is possible using multiple coextrusion to combine different writing substance formulations in one extrusion head to form a multi-component writing substance.
Claims (12)
1. A polymer-bound writing substance for writing, drawing or painting tools, in particular for pencils or coloured pencils, comprising at least one polymer bonding agent, at least one wax and at least one filler material, characterised in that the writing substance further comprises 0.1 to 5 wt. % of palm kernel oil and/or coconut butter, and/or coconut oil and/or oleic acid.
2. The polymer-bound writing substance according to claim 1, characterised in that the writing substance comprises 10 to 30 wt. % bonding agent 2 to 25 wt. % wax 0.1 to 5 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder filler material(s).
3. The polymer-bound writing substance according to either claim 1 or claim 2, characterised in that the writing substance comprises 15 to 25 wt. % bonding agent 4 to 20 wt. % wax 0.5 to 2.5 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder filler material(s).
4. The polymer-bound writing substance according to any one of claims 1 to 3, characterised in that the at least one bonding agent is formed of at least one polymer of the group comprising polystyrene (PS), styrene acrylonitrile (SAN), - 2 styrene-butadiene (SB), polyolefins (PO) and acrylonitrile butadiene styrene (ABS).
5. The polymer-bound writing substance according to any one of claims 1 to 4, characterised in that the at least one wax is formed of at least one wax of the group comprising fatty acids, stearates, montan waxes, amide waxes and paraf fins.
6. The polymer-bound writing substance according to claim 5, characterised in that the at least one wax is formed of calcium stearate or comprises calcium stearate.
7. The polymer-bound writing substance according to any one of claims 1 to 6, characterised in that the at least one filler material comprises at least one filler material from the group comprising graphite, soot, hexagonal boron nitride, layered silicates, chalk, baryte, coloured pigments and/or uncoloured pigments.
8. The polymer-bound writing substance according to any one of claims 1 to 7, characterised in that the writing substance is a pencil writing substance and comprises 15 to 25 wt. % bonding agent 4 to 12 wt. % wax 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder graphite or graphite and soot.
9. The polymer-bound writing substance according to claim 8, characterised in that the writing substance is a pencil writing substance and comprises - 3 15 to 25 wt. % polystyrene 4 to 12 wt. % calcium stearate 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder graphite or graphite and soot.
10. The polymer-bound writing substance according to any one of claims 1 to 7, characterised in that the writing substance is a coloured pencil writing substance and comprises 15 to 25 wt. % bonding agent 4 to 12 wt. % wax 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder layered silicate(s) and/or hexagonal boron nitride as well as at least one coloured pigment and/or an uncoloured pigment.
11. The polymer-bound writing substance according to claim 10, characterised in that the writing substance is a coloured pencil writing substance and comprises 15 to 25 wt. % polystyrene 4 to 12 wt. % montan wax 0.5 to 2 wt. % palm kernel oil, and/or coconut butter, and/or coconut oil and/or oleic acid remainder talc and/or hexagonal boron nitride as well as at least one coloured pigment and/or an uncoloured pigment. - 4
12. A method for producing a polymer-bound writing substance according to any one of claims 1 to 11, characterised in that the writing substance is formed by extrusion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009033830A DE102009033830B4 (en) | 2008-07-15 | 2009-07-18 | Polymer-bound refill for writing, drawing and / or painting equipment and methods of making the same |
DE102009033830.6 | 2009-07-18 | ||
PCT/EP2010/004160 WO2011009535A1 (en) | 2009-07-18 | 2010-07-08 | Writing substance for writing, drawing and/or painting tools |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2010275853A1 true AU2010275853A1 (en) | 2012-02-02 |
AU2010275853B2 AU2010275853B2 (en) | 2013-06-27 |
Family
ID=42556725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2010275853A Ceased AU2010275853B2 (en) | 2009-07-18 | 2010-07-08 | Writing substance for writing, drawing and/or painting tools |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP2456834B1 (en) |
JP (1) | JP5718330B2 (en) |
KR (1) | KR101368629B1 (en) |
CN (1) | CN102471626B (en) |
AU (1) | AU2010275853B2 (en) |
BR (1) | BRPI1013499B1 (en) |
CA (1) | CA2767216A1 (en) |
EG (1) | EG26988A (en) |
ES (1) | ES2471490T3 (en) |
HK (1) | HK1171043A1 (en) |
WO (1) | WO2011009535A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013016355B4 (en) * | 2013-10-01 | 2017-06-22 | Staedtler Mars Gmbh & Co. Kg | Mine for writing, drawing and / or painting equipment and methods of making the same |
DE102013020666B4 (en) * | 2013-11-29 | 2017-09-14 | Staedtler Mars Gmbh & Co. Kg | Lead fines for writing, drawing and / or painting equipment and methods of making the same |
CN105131721A (en) * | 2015-09-17 | 2015-12-09 | 蚌埠市神龙笔业有限公司 | Pencil lead with increased hardness |
CN105925066A (en) * | 2016-06-02 | 2016-09-07 | 郝行健 | Colored wax crayon basic material taking edible vegetable oil as main raw material and preparation method thereof |
AU2017348093B2 (en) * | 2016-10-26 | 2021-12-23 | Danimer Ipco, Llc | Renewable, biodegradable marking wax composition |
FR3065006B1 (en) * | 2017-04-10 | 2019-06-21 | Societe Bic | PENCIL MINE WITH PAPER |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59120668A (en) * | 1982-12-27 | 1984-07-12 | Nippon Emarujiyon Kk | Color pencil lead |
DE3827968C1 (en) | 1988-08-17 | 1989-12-28 | Solmex Ag, Weggis, Ch | Pencil lead composition and process for its preparation |
JPH03258872A (en) * | 1990-03-07 | 1991-11-19 | Pilot Precision Co Ltd | Production of lead core |
JP3276497B2 (en) * | 1993-12-24 | 2002-04-22 | 株式会社トンボ鉛筆 | Manufacturing method of mechanical pencil lead |
JP3928904B2 (en) * | 1998-05-27 | 2007-06-13 | 株式会社サクラクレパス | Non-firing colored pencil lead |
WO1999061537A1 (en) * | 1998-05-27 | 1999-12-02 | Sakura Color Products Corporation | Non-calcined marrow of colored pencil |
JP3820773B2 (en) | 1998-09-30 | 2006-09-13 | ぺんてる株式会社 | Colored pencil lead |
JP2003253185A (en) * | 2002-02-28 | 2003-09-10 | Pentel Corp | Solid drawing material |
EP1624036B1 (en) * | 2004-07-23 | 2008-04-02 | Faber-Castell AG | Erasable coloured lead |
DE102005055193B4 (en) * | 2005-11-19 | 2008-03-13 | J. S. Staedtler Gmbh & Co. Kg | Mine for writing, drawing or painting equipment |
JP5025368B2 (en) * | 2007-07-26 | 2012-09-12 | 三菱鉛筆株式会社 | Solid drawing material |
DE102008034015B4 (en) * | 2008-07-15 | 2011-08-25 | J. S. Staedtler GmbH & Co. KG, 90427 | Writing, drawing, painting or cosmetic pencil |
DE102008034014B4 (en) * | 2008-07-15 | 2011-06-16 | J. S. Staedtler Gmbh & Co. Kg | Mine for writing, drawing and / or painting equipment |
-
2010
- 2010-07-08 CA CA2767216A patent/CA2767216A1/en not_active Abandoned
- 2010-07-08 BR BRPI1013499-9A patent/BRPI1013499B1/en active IP Right Grant
- 2010-07-08 ES ES10732303.2T patent/ES2471490T3/en active Active
- 2010-07-08 KR KR1020127004254A patent/KR101368629B1/en active IP Right Grant
- 2010-07-08 WO PCT/EP2010/004160 patent/WO2011009535A1/en active Application Filing
- 2010-07-08 EP EP10732303.2A patent/EP2456834B1/en active Active
- 2010-07-08 CN CN201080032670.1A patent/CN102471626B/en active Active
- 2010-07-08 JP JP2012519917A patent/JP5718330B2/en active Active
- 2010-07-08 AU AU2010275853A patent/AU2010275853B2/en not_active Ceased
-
2012
- 2012-01-16 EG EG2012010085A patent/EG26988A/en active
- 2012-11-19 HK HK12111746.0A patent/HK1171043A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2012533636A (en) | 2012-12-27 |
EP2456834A1 (en) | 2012-05-30 |
CN102471626B (en) | 2014-02-19 |
ES2471490T3 (en) | 2014-06-26 |
EG26988A (en) | 2015-03-08 |
HK1171043A1 (en) | 2013-03-15 |
JP5718330B2 (en) | 2015-05-13 |
AU2010275853B2 (en) | 2013-06-27 |
KR101368629B1 (en) | 2014-03-04 |
EP2456834B1 (en) | 2014-05-21 |
CA2767216A1 (en) | 2011-01-27 |
WO2011009535A1 (en) | 2011-01-27 |
BRPI1013499A2 (en) | 2018-02-06 |
KR20120049275A (en) | 2012-05-16 |
CN102471626A (en) | 2012-05-23 |
BRPI1013499B1 (en) | 2019-04-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8648128B2 (en) | Writing substance for writing, drawing and/or painting tools | |
AU2010275853B2 (en) | Writing substance for writing, drawing and/or painting tools | |
CA2730854C (en) | Writing, drawing, decorating or cosmetic pencil | |
AU2014331388B2 (en) | Refill for writing, drawing and/or painting devices and method for the production thereof | |
US10457826B2 (en) | Lead refill for writing, drawing and/or painting devices and method for the production thereof | |
US20060020055A1 (en) | Erasable color lead | |
WO2018184037A1 (en) | Pencil lead formulation | |
DE202008009734U1 (en) | Mine for writing, drawing and / or painting equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) | ||
PC | Assignment registered |
Owner name: STAEDTLER MARS GMBH & CO KG Free format text: FORMER OWNER WAS: J.S. STAEDTLER GMBH & CO. KG |
|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |