Castor oil based polyurethane for underbody coatings and the like
US5021535A · kind A · utility
3Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1990 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31598
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The component polyol/polyisocyanate composition useful in forming an abrasion resistant polyurethane automotive undercoating. The polyol component is unmodified castor oil or castor oil modified with cyclohexanone-formaldehyde condensate. The modified castor oil may be further modified by adding the reaction product of neopentyl glycol and adipic acid. The polyisocyanate component comprises an MDI-based mixture containing polyisocyanate prepolymers based on alkylene oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.