Preparation of hydrophilic pressure sensitive adhesives having optimized adhesive properties
USRE44145E1 · kind E1 · reissue
Assignees
Inventors
Key dates
| Filing date | Jun 10, 2005 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Jun 10, 2025 |
Classification
- Technology area (CPC —)General
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.