Water-absorbent adhesive compositions and associated methods of manufacture and use
US8273405B2 · kind B2 · utility
19Cited by
252References
16Claims
0Family size
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Key dates
| Filing date | Oct 7, 2011 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An adhesive composition is provided that is water-insoluble yet water-absorbent, i.e., capable of absorbing up to 15 wt. % water or more. The composition in composed of a film-forming hydrophilic polymer with at least one linear segment having a plurality of recurring polar groups along the polymer backbone, a complementary multifunctional polymer with a plurality of recurring functional groups that noncovalently bind to the polar groups on the film-forming polymer, and plasticizer. A method for manufacturing the adhesive composition is provided as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.