Polyureas made from aminocrotonates and enaminones
US8710170B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | May 13, 2009 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Oct 3, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A polymer made by reacting a polyisocyanate with a compound having the formula below. R1 is an organic group. R2 is an aliphatic group or oxyaliphatic group. R3 is an aliphatic group. The reaction forms urea groups from the isocyanate groups of the polyisocyanate and the NH groups of the compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.