Removal of unconsumed reactants and polar by-products from reaction product mixtures through adsorption on polyurethane foam
US3975387A · kind A · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1974 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Feb 6, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/918
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Separation of unreacted amines and other undesired by-products from amine-derived dispersants and additives through adsorption of the undesired amines and by-products on polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.