Patent · US Expired

Method for producing sorbents on the basis of a cellulose-containing material and clay minerals

US6294118A · kind A · utility

20Cited by

10References

15Claims

0Family size

Assignee

Sud Chemie, Inc. · US

Inventors

Werner Huber · Witzenhausen, DE
Petra Sellmayr · Wartenberg, DE
Otto Haubensak · Brannenburg, DE

Key dates

Filing date	Aug 5, 1999
Grant date	Sep 25, 2001
Priority date	—
Expiry date	Aug 5, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2220/46
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing sorbents on the basis of a cellulose-containing material and at least one smectic clay mineral capable of swelling, which form lumps when absorbing liquids. The method is characterized in that: (a) the cellulose-containing material and smectic clay mineral in fine particle form are intimately mixed together, whereby total water content of the components to be mixed is between approximately 25 and 40 weight percent, or is adjusted to be within this range by the addition of water (b) this mixture is compressed by means of a matrix press, and (c) the compressed moulded bodies emerging from the matrix press are cut substantially perpendicular to the direction of emergence and dried. The invention further relates to a sorbent obtained by the above procedure and its use.

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