Patent · US Expired

Aqueous suspensions of colloidal particles, preparation and use of the suspensions

US5607552A · kind A · utility

28Cited by

3References

18Claims

0Family size

Assignee

Eka Nobel AB · SE

Inventors

Kjell Andersson · Bissenkamp, SE
Hans Johansson · Gothenburg, SE
Erik Lindgren · Bohus, SE
Marek Tokarz · Handen, SE

Key dates

Filing date	Feb 13, 1995
Grant date	Mar 4, 1997
Priority date	—
Expiry date	Feb 13, 2015

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/68
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Aqueous suspensions of colloidal particles which particles are both silica based anionic particles and swollen particles of clays of smectite type which are expandable in water and a process for the preparation thereof. The suspensions are useful as flocculating agents and particularly in combination with polymers in the production of paper.

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