Patent · US Expired

Water-soluble polymers of di-C.sub.1 -C.sub.3 -alkylaminoneopentyl (meth)acrylates, and their use as retention agents, drainage agents and flocculants in papermaking

US4465555A · kind A · utility

2Cited by

2References

5Claims

0Family size

Assignee

BASF SE

Inventors

Friedrich Linhart · Heidelberg, DE
Juergen Hartmann · Ludwigshafen, DE
Dietmar Jung · Ludwigshafen, DE
Heinrich Hartmann · Schifferstadt, DE
Herbert Spoor · Schifferstadt, DE

Key dates

Filing date	Jun 4, 1982
Grant date	Aug 14, 1984
Priority date	—
Expiry date	Jun 4, 2002

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/455
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Water-soluble homopolymers and copolymers of di-C.sub.1 -C.sub.3 -alkylaminoneopentyl (meth)acrylates, the homopolymers and copolymers having a K value of from 150 to 300, are used as retention agents, drainage agents and flocculants in papermaking. Increased retention, drainage rate and flocculation are achieved in comparison with the conventional basic polyacrylates.

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