Patent · US Expired

Hydrophilic pressure sensitive hot-melt adhesives

US6190689A · kind A · utility

41Cited by

3References

24Claims

0Family size

Assignee

LTS Lohmann Therapie-Systeme AG · DE

Inventors

Hans-Rainer Hoffmann · Neuwied, DE
Michael Roreger · Neuwied, DE

Key dates

Filing date	Nov 13, 1996
Grant date	Feb 20, 2001
Priority date	—
Expiry date	Nov 13, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J11/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A device for the release of substances from pressure sensitive hot-melt adhesives with a uniform or non-uniform distribution of said substances is characterized by the fact that the pressure sensitive hot-melt adhesive is hydrophilic and comprises at least one water-soluble, or at least water-swellable, polymer, at least one water-soluble, meltable adhesive resin, as well as substance to be released.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.