Hot melt adhesives based on sulfonated polyesters comprising wetness indicator
US6653522B1 · kind B1 · utility
24Cited by
37References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/58
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wetness indicating hot melt adhesive composition comprising a pH adjusting component and an indicating agent which is capable of changing color in response to changes in pH. The adhesive composition may comprise 20 to 80% by weight of a sulfonated polyester, 3 to 30% by weight of an acidic plasticizer and 0.05 to 3% by weight of an indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.