Compositions useful as flocculating agents comprising a hydrophilic cationic polymer and an anionic surfactant
US5130358A · kind A · utility
19Cited by
5References
53Claims
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Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cationic polymer composition suitable for use as a flocculating agent and as a retention aid in paper making consists of a mixture of PA0 a) a hydrophilic cationic polymer, PA0 b) an anionic surfactant, PA0 optionally c) a water-immeriscible oil in which the polymer a) is insoluble, PA0 and, if c) is present, PA0 optionally d) a lipophilic non-ionic surfactant, PA0 optionally e) water PA0 and optionally f) an oil-miscible polar solvent. The compositions may be prepared by water-in-oil emulsion polymerisation and are readily diluted with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.