Process for making a temporary color change on a plastic material
US5842905A · kind A · utility
17Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/004
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A simple, general purpose temporary dyeing process for coloring plastic or plastic fabric is disclosed. A colorless, but pH sensitive indicator solution is applied to a plastic material, such as the hair of a fashion doll, without changing the hair color. A developer solution of a specific pH range is subsequently applied to the doll hair, thereby causing the color of the hair to change. As the hair dries and the developer solution evaporates, the hair returns to its original color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.