Flocculants and their use
US4702844A · kind A · utility
80Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1985 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Aug 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A suspension may be flocculated using a water soluble substantially linear polymer having a single point intrinsic viscosity above 3 and that is a copolymer of two or more ethylenically unsaturated monomers including at least 0.5% by weight of monomer carrying pendant hydrophobic groups. The cationic polymers are novel. Preferred polymers are those in which the hydrophobic group is introduced as an allyl ether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.