Process for making tetrazole based cross-linked polymers
US7517997B1 · kind B1 · utility
1Cited by
2References
20Claims
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Key dates
| Filing date | May 27, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Dec 17, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/3842
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100° C. for a time period in the range of about 1 to about 24 hours and cooling to room temperature producing a cross-linked polyisocyanate polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.