Patent · US Expired

Auxiliary agent for improving retention, drainage and treatment especially in papermaking, and use of the auxiliary agent

US4103080A · kind A · utility

7Cited by

8References

6Claims

0Family size

Assignee

Wolff Walsrode AG · DE

Inventors

Branislav Bohmer · Walsrode, DE
Lutz Hoppe

Key dates

Filing date	Oct 4, 1976
Grant date	Jul 25, 1978
Priority date	—
Expiry date	Oct 4, 1996

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/45
WIPO fieldFood chemistry
WIPO sectorChemistry

Abstract

Auxiliary agents for improving the retention of flushable solids and for accelerating the drainage of suspensions, for more rapid treatment of solid and liquid substances which can be utilized industrially, such as industrial water, effluents and sludges, inter alia in the paper industry, and for improving the structure of soils, this auxiliary agents being in the form of suitable high-molecular, water-soluble acrylamide polymers obtained by solution polymerization, and also relates to a process for the preparation of this auxiliary agents.

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