Isocyanate-free method for preparing poly(carbonate-urethane) or poly(ester-urethane)
US9080016B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jun 21, 2011 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Nov 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/305
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention discloses a method for preparing poly(carbonate-urethane) or poly(ester-urethane) without isocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.