Method for production of aqueous dispersion of N-substituted N',N'-alkylene urea
US4696760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1984 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Dec 5, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D203/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for the production of an aqueous dispersion of a water insoluble N-substituted N',N'-alkylene urea having the general formula I: ##STR1## wherein R.sup.1 denotes alkyl having 6 to 20 carbon atoms, phenyl or ##STR2## in case of m=1, or R.sup.1 denotes alkylene having 6 to 20 carbon atoms, phenylene or ##STR3## in case of m=2, where X denotes H, CH.sub.3 or OCH.sub.3 and n is 0 or 1, R.sup.2 denotes H or CH.sub.3, R.sup.3 denotes H, CH.sub.3 or C.sub.2 H.sub.5 and R.sup.4 denotes H or CH.sub.3, by the reaction of an alkylene imine having 2 to 4 carbon atoms with an isocyanate represented by the general formula II: EQU R-NCO (II) wherein R denotes an alkyl having 6 to 20 carbon atoms, ##STR4## wherein X and n are the same as above in the presence of at least one surface active agent selected from the group consisting of anionic surface active agents and nonionic surface active agents under vigorous stirring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.