Food color stain blocking fiber agents
US4865885A · kind A · utility
15Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/412
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a new process and group of products that are useful in preventing nylon and wool fibers, including carpeting and upholstery, from being permanently stained. Fibers can be permanently stained by food colors contained in foods spilled on the fiber. This new group of sulfonated phenol-formaldehyde or naphthol-formaldehyde and anionic surfactant compounds not only block the stain from the fiber but also minimizes any yellowing or discoloration of the treated fibers during the application and during the subsequent exposure to sunlight or commonly used lightfastness testing equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.