Ambient temperature curable isocyanate-free compositions for preparing crosslinked polyurethanes
US8653174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Nov 25, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a multicomponent composition that is substantially isocyanate-free and comprises a polycarbamate as a first component and a polyaldehyde or an acetal or hemiacetal thereof as a second component and further comprises an effective amount of a triggering agent such that the first and second components to cure at a temperature of from 0C to less than 80C to form a crosslinked polyurethane. The multicomponent composition forms an ambient temperature curable composition when all of its components are combined that has a pH of 7.0 or less. The present invention also provides processes crosslinked polyurethanes, and the crosslinked polyurethanes prepared by the processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.