Polyurethane materials, and products molded from the polyurethane materials using RIM
US6268057A · kind A · utility
2Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31554
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane material comprising a hexamethylene diisocyanate (HDI) trimer and a polyol is disclosed. Content of oligomer, which is equal to or higher than a pentamer, in said HDI trimer is restricted to 0 to 50% by weight, and 3 to 10% by weight of monool is added to said HDI trimer. The polyurethane material is high in breaking elongation, superior in flexural resistance, and not subject to cracks or breaking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.