Liquid coatings for cast iron
US5290632A · kind A · utility
8Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1992 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | May 1, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel polyurethane formulations especially useful as coating for the protection of ductile cast iron pipes. The polyurethane is prepared by mixing two components, A and B. Component A comprises castor oil, a low molecular weight polyol having a molecular weight between 76 and about 450, preferably with an elastomer. Component B is a polymeric MDI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.