Patent · US Expired

Edge sealing for filter cloths

US4212746A · kind A · utility

9Cited by

3References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Edzard Tholema · Odenthal, DE
Heinz-Gerd Nonnenbruch · Leverkusen, DE
Hans-Joachin Ludwig Gossmann · Summit, US
Peter Schultz · Phoenix, US

Key dates

Filing date	Dec 26, 1978
Grant date	Jul 15, 1980
Priority date	—
Expiry date	Dec 26, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2239/0478
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

If the edge of a filter cloth is coated with one or more layers of a polychloroprene latex mixture which contains zinc oxide and a silicate filler in addition to a polychloroprene with carboxyl groups, sticking is so greatly reduced that the durability of the filter cloths is substantially increased.

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