Utilization of lactones and lactams in the preparation of polyurethane-polyurea products
US4757095A · kind A · utility
15Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2410/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Lactones and lactams are utilized in the preparation of urethane modified prepolymers based on diphenylmethane diisocyanate, uretonimine-modified diphenylmethane diisocyanate. The prepolymers are then employed to prepare microcellular foams suitable for shoe soles and cast polyurethane products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.