Patent · US Expired

Deposition of swellable, modified cellulose ether on water wet hydrophilic substrate

US4096312A · kind A · utility

13Cited by

5References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Arno Holst
Helmut Lask · Wiesbaden, DE

Key dates

Filing date	Jul 28, 1976
Grant date	Jun 20, 1978
Priority date	—
Expiry date	Jul 28, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2965
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Process for the transformation of comminuted cellulose ether, which has been rendered at least largely water-insoluble by modification but is still highly swellable with water, into an easily workable material, comprising wetting a hydrophilic support web, applying the comminuted modified cellulose ether to the wetted web, and drying. This invention also relates to an apparatus for performing the process.

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