Ink composition for writing instrument
US6048914A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1998 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Jun 26, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink composition for writing instruments comprising an organic solvent having an SP value of 5 to 15 and a vapor pressure of 0.01 to 45 mmHg at 20.degree. C., a colorant comprising a pigment and/or a dye, a resin having a solubility of 7% or less in water or ethanol at 25.degree. C. and a fluorinated surfactant, wherein the above ink composition can be used to write on various writing surfaces such as a resin surface, a glass surface and a metal surface, is excellent in a line sticking property against non-absorbing surfaces, a water resistance and an alcohol resistance and can also be used to write certainly even on writing surfaces having a releasing property in a water-repellent property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.