Reaction of organic diisocyanates with water
US4176132A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1978 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Mar 1, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8045
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing an organic polyisocyanate having a long storage life which comprises reacting an aliphatic, alicyclic or araliphatic diisocyanate monomer with water in the presence of a solvent comprising a mixture of at least one ethylene glycol derivative represented by the formula (I): EQU R.sub.1 O(CH.sub.2 CH.sub.2 O).sub.n R.sub.2 (I) wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group having 1 to 4 carbon atoms, which may be straight chain or branched chain, or an acetyl group and n is an integer of 1 to 2; and at least one phosphoric acid derivative represented by the formula (II): ##STR1## wherein R.sub.3 R.sub.4 and R.sub.5, which may be the same or different, each represents a methyl group or an ethyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.