Absorbent films and laminates
US4117184A · kind A · utility
69Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jun 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/387
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Water swellable aerated films and laminates, made from solutions of carboxylic polyelectrolytes, together with methods for their preparation, are disclosed. The films and laminates are cured and/or crosslinked with a polyfunctional or difunctional crosslinking agent that is reactive with carboxylate groups by heating and/or removing substantially all of the water and/or alcohol from the precursor composition. The solutions are mechanically aerated prior to the curing step. The absorbent articles have a rapid water absorbency rate and are useful as components in diapers, tampons, dressings and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.