Preparation of menthane diisocyanate by addition of isocyanic acid to terpinyl monoisocyanates
US4618707A · kind A · utility
3Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1985 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Nov 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C263/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing menthane diisocyanate by reaction of a terpinyl monoisocyanate with isocyanic acid in a medium which is an excess of isocyanic acid, a polar solvent, or a mixture of solvents which includes a polar solvent in the presence of a catalyst which is a Bronsted acid or a Lewis acid is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.