Enhanced washability inks and methods of making the same
US9321927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Feb 27, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An enhanced washability ink composition has enhanced rinsability and/or washability from fabric, walls, or skin. The composition may comprise about 70 wt % to about 95 wt % water; about 5 wt % to about 35 wt % one or more sugars (e.g., dextrins); about 1 wt % to about 40 wt % one or more optional dye blockers; about 0.1 wt % to about 15 wt % one or more dyes; and one or more optional additives. The rinsable ink composition is usable in a variety of instruments, including markers or pens. A method for making the rinsable ink composition comprises dissolving one or more sugars (e.g., dextrins) in water to form a sugar solution; subsequently adding one or more dyes to the sugar solution to form a sugar-dye solution; and subsequently adding one or more optional dye blockers to the sugar-dye solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.