Patent · US Expired

Consolidating the surface of a granular adsorbent

US4535005A · kind A · utility

7Cited by

5References

4Claims

0Family size

Assignee

BASF SE

Inventors

Franz Haas, Sr. · Wien, AT
Gerhard Janisch · Ludwigshafen, DE
Gerold Schreyer · Ludwigshafen, DE

Key dates

Filing date	Mar 9, 1983
Grant date	Aug 13, 1985
Priority date	—
Expiry date	Mar 9, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for consolidating the surface of a granular adsorbent, wherein a water-containing adsorbent, which has taken up 25-70% by weight of the maximum possible amount of water, is heated to a temperature at which the water taken up evaporates, and is at the same time treated with an aqueous dispersion of a self-crosslinking copolymer, and the adsorbent thus coated is heated to a temperature at which the copolymer crosslinks. The coated adsorbent has virtually the same adsorption and desorption properties as the untreated adsorbent, but in contrast exhibits substantially improved abrasion resistance.

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