GB781808A - Improvements in erasable writing solutions - Google Patents
Improvements in erasable writing solutionsInfo
- Publication number
- GB781808A GB781808A GB14923/55A GB1492355A GB781808A GB 781808 A GB781808 A GB 781808A GB 14923/55 A GB14923/55 A GB 14923/55A GB 1492355 A GB1492355 A GB 1492355A GB 781808 A GB781808 A GB 781808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graphite
- parts
- hydrocarbon
- resin
- dissolved
- 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
- C09D11/00—Inks
- C09D11/16—Writing inks
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
An erasable ink for use in ball point pens comprises crystalline graphite of particle size from 0.5-5 microns dispersed in a non-polar and non-drying hydrocarbon carrier which has dissolved therein a resin derived from unsaturated constituents of the carrier, e.g. the hydrocarbon and resin being absorbed by the paper leaving an erasable layer of graphite on the surface. Carriers specified are white mineral oils and hydrocarbon polymers or coumaroneindene resins are used as the synthetic resins. In examples: (1) 15 parts graphite of 2 microns particle size are dispersed in 65 parts of a mineral oil having an A.P.I. gravity of 20 at 60 DEG F., a 69 S.U.S. viscosity at 210 DEG F. and a flash point of 355 DEG F. which has dissolved therein a polymer obtained by the catalytic polymerisation of a mixture of dienes and olefines; (2) 7.5 parts graphite are suspended in a coal tar naphtha containing 25 parts coumarone indene resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US781808XA | 1955-05-16 | 1955-05-16 | |
| US1148441XA | 1955-05-16 | 1955-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB781808A true GB781808A (en) | 1957-08-28 |
Family
ID=32314237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14923/55A Expired GB781808A (en) | 1955-05-16 | 1955-05-24 | Improvements in erasable writing solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB781808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3680298A1 (en) * | 2019-01-11 | 2020-07-15 | Faber- Castell AG | Writing, marking and/or character liquid for capillary systems, in particular for applicators with a capillary system and applicator |
-
1955
- 1955-05-24 GB GB14923/55A patent/GB781808A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3680298A1 (en) * | 2019-01-11 | 2020-07-15 | Faber- Castell AG | Writing, marking and/or character liquid for capillary systems, in particular for applicators with a capillary system and applicator |
| CN111434732A (en) * | 2019-01-11 | 2020-07-21 | 辉柏嘉股份公司 | Writing, marking and/or symbol liquid and application device for capillary systems, in particular for application devices with capillary systems |
| US11072718B2 (en) | 2019-01-11 | 2021-07-27 | Faber-Castell Ag | Writing, marking and/or drawing liquid for capillary systems, especially for applicator implements having a capillary system, and applicator implement |
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