Preparation of hydrophilic pressure sensitive adhesives having optimized adhesive properties
US6576712B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/58
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for preparing hydrophilic pressure sensitive adhesive (PSA) compositions is provided, wherein the method enables preparation of adhesives having a particular, optimized degree of adhesion. That is, the hydrophilic PSA is comprised of a hydrophilic polymer and a complementary short-chain plasticizing agent, wherein the hydrophilic polymer and plasticizing agent are capable of hydrogen bonding or electrostatic bonding to each other and are present in a ratio that optimizes key characteristics of the adhesive composition, such as adhesive strength, cohesive strength and hydrophilicity. The adhesive is useful in a wide variety of contexts, e.g., as a biomedical adhesive for application to the skin or other body surface, and as such finds utility in the areas of drug delivery systems (e.g., topical, transdermal, transmucosal, iontophoretic), medical skin coverings and wound healing products and biomedical electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.