Patent · US Expired

Auxiliary agent for improving retention, drainage and treatment

US4093605A · kind A · utility

9Cited by

2References

3Claims

0Family size

Assignee

Wolff Walsrode AG · DE

Inventors

Lutz Hoppe
Branislav Boehmer · Passau, DE
Rudolf Behn · Walsrode, DE

Key dates

Filing date	Jan 21, 1976
Grant date	Jun 6, 1978
Priority date	—
Expiry date	Jan 21, 1996

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Auxiliary agent for improving the retention of flushable solids, the drainage of suspensions and the rapid treatment of industrial waters, effluents and sludges, especially in paper making which comprises the crosslinking of an intermediate product A with another intermediate product B in the presence of an polyfunctional compound to form the auxiliary agent C, wherein the intermediate product A comprises polyamines which contain quaternary nitrogen and which are formed by the action of polyvalent and/or monovalent amines on the reaction products of the secondary amine hydrochlorides with epichlorohydrin and wherein the intermediate product B comprises basic-polyamino-amides.

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