Ultrafiltration process for the concentration of polymeric latices
US4160726A · kind A · utility
22Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1976 |
| Grant date | Jul 10, 1979 |
| Priority date | — |
| Expiry date | May 7, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/168
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a process for the concentration of an aqueous polymeric latex, which latex comprises polymeric particles dispersed in an aqueous phase by a semipermeable membrane process, such as an ultrafiltration process and which latex is subject to destabilization, the improvement which comprises: adding to the latex a sufficient amount of a compatible surfactant to stabilize the latex and to maintain the dispersion of the polymeric particles in the aqueous phase of the latex during the concentration of the latex in a semipermeable membrane process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.