http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5191034-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b3d7e6a540f70b17661213ff6fdec3ce |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B45-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-325 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-325 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C06B45-10 |
| filingDate | 1992-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1993-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69b20d8e72770a76d80f7a85b7de545a |
| publicationDate | 1993-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5191034-A |
| titleOfInvention | Branched energetic polyether elastomers |
| abstract | The invention disclosed relates to novel branched chain hydroxy-terminated aliphatic azido polymers and copolymers with variable molecular weight (MW) and a single step method for the preparation thereof which involves respectively reacting a high (MW) 0.5-5.0x106) solid rubbery polyepichlorohydrin (PECH) homopolymer and epichlorohydrin/alkylene oxide copolymer (PEEC), with an alkali metal azide in a suitable organic solvent, in the presence of an initiator at elevated temperature. The MW of the azido product may be controlled by including in the reaction mixture a basic degradation catalyst (such as LiOCH3 or NaOH) and varying the amount of catalyst. When the reaction is catalyzed, the MW of the product varies within the range 1,000-40,000 and the hydroxyl functionality is 2-10. Uncatalyzed reactions yield products with MW between 40,000 and 200,000 and a functionality of about 10. The branched azido polymers and copolymers yield energetic binders with improved mechanical properties and thermal stability which are useful in rocket propellants and composite explosives formulations. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7737226-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1675620-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1675620-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005085619-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010217050-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007123691-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5552257-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007123693-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8008428-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7820766-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9574048-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5605975-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7230068-B2 |
| priorityDate | 1991-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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