Biscarbodiimides and polycarbodiimides and method for their preparation
US11104641B2 · kind B2 · utility
0Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2017 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Apr 10, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure describes a method of synthesizing carbodiimides comprising providing an alkylisothiourea, providing a thiophilic reagent to the reaction mixture and reacting under conditions sufficient to provide the carbodiimide, and wherein the carbodiimide is a polycarbodiimide or a biscarbodiimide. The present disclosure further describes methods for isolating the carbodiimides. The present disclosure additionally describes isolated carbodiimide compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.