Polycarbodiimide composition, method for producing polycarbodiimide composition, aqueous dispersion composition, solution composition, resin composition, and cured resin
US10011677B2 · kind B2 · utility
9Cited by
2References
13Claims
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Key dates
| Filing date | Jan 5, 2017 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Jan 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B61/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group and alcohols, wherein in an infrared absorption spectrum, the intensity ratio (IRCI/IRUI+U) of absorbance IRCI at or near 2120 cm−1 due to stretching vibration of the carbodiimide group relative to absorbance IRUI+U at or near 1720 cm−1 due to stretching vibration of the uretonimine group and urethane group is 1.5 or more and 4.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.