Patent · US Expired

Water vapor absorbing and transmitting sheet material of rubber containing a swellable cross-linked cellulose ether or starch ether and a process for the manufacture thereof

US4197371A · kind A · utility

22Cited by

1References

5Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Arno Holst
Walter Schermann · Mainz, DE
Wilhelm Fischer · Westfield, US

Key dates

Filing date	Aug 10, 1978
Grant date	Apr 8, 1980
Priority date	—
Expiry date	Aug 10, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/916
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

This invention relates to an improvement in a sheet material comprising natural or synthetic rubber or a rubber-like polymer, which is capable of absorbing and transmitting water vapor and which contains a uniformly incorporated addition of polymer particles, the improvement that the addition comprises particles of at least one swellable modified polymer. The invention also relates to a process for the manufacture of the sheet material.

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