Stabilizing method of isocyanate compounds and isocyanate compositions stabilized thereby
US5302749A · kind A · utility
8Cited by
2References
6Claims
0Family size
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Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7642
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for stabilizing an isocyanate compound by adding 10-5000 ppm of phenol to the isocyanate compound, and also an isocyanate composition so stabilized. In the isocyanate composition stabilized by the above method, coloring due to time-dependent changes and the occurrence of turbidity through self-polymerization are both suppressed so that it shows outstanding storage stability compared with a corresponding isocyanate composition containing a conventional stabilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.