Method for producing saturated polyester
US5306787A · kind A · utility
7Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/4238
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a high molecular weight saturated polyester comprising adding to a saturated polyester with the terminal group being substantially hydroxyl group, having a number average molecular weight of 5,000 or more and being in the molten state, diisocyanate containing isocyanate group the amount of which corresponds to 1/10 to 2 equivalents of the amount of the hydroxyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.