Accelerated cure of isocyanate terminated prepolymers
US9006375B2 · kind B2 · utility
1Cited by
14References
10Claims
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Key dates
| Filing date | Mar 10, 2014 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Mar 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/2018
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing a polyurethane elastomer, the method comprising mixing an isocyanate terminated prepolymer and a nitrogen-containing organic salt to form a prepolymer mixture and reacting the prepolymer in the prepolymer mixture with a methylenedianiline metal salt coordination complex chain extender to form the polyurethane elastome. The nitrogen-containing organic salt is selected from the group consisting of an ammonium salt, an imidazolium salt, a pyridinium salt, a pyrrolidinium salt, a piperidinium salt, and a morpholinium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.