Catalysts for the preparation of carbodiimide foams and elastomers
US4611013A · kind A · utility
18Cited by
7References
8Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 12, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Jun 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New compounds which are salts of the formula A.sup.+ B.sup.- where A.sup.+ is a quaternary ammonium cation and B.sup.- is a tetrahedral boron-oxygen complex anion are prepared from boric acid by reaction with a hydroxyl compound and a quaternary ammonium hydroxide. The salts are used as catalysts to prepare carbodiimides and isocyanurates from isocyanates which can be in the form of foamed resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.