Highly absorbent fibers of rayon with sulfonic acid polymer incorporated
US4242242A · kind A · utility
25Cited by
13References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1977 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Jun 10, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/24
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Highly absorbent cellulosic fibers are made by incorporating therein from 2%-35% based on the weight of cellulose of a polymerized acrylamido-2-methylpropane sulfonic acid or a copolymer of acrylamido-2-methylpropane sulfonic acid with any one or combination of other polymerizable hydrophilic monomers such as acrylic acid, methacrylic acid, acrylonitrile and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.