Patent · US Expired

Storage-stable hydrogels

US6156244A · kind A · utility

8Cited by

4References

35Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Achim Müller · Aschaffenburg, DE
Beat Muller · Marly, CH
Bernhard Seiferling · Goldbach, DE
Iris Leder · Niedernberg, DE

Key dates

Filing date	Nov 12, 1998
Grant date	Dec 5, 2000
Priority date	—
Expiry date	Nov 12, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of storage-stable hydrogel mouldings, the storage stability of which can be established by controlled hydrolysis. At the same time as the sotrage stability is established, the hydrogel is sterilised in its final packaging, and the salt concentration of the aqueous phase is adjusted preferably to a physiological range.

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