http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5280081-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b94baf1aad802afc19b0e63b4499b04d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08C19-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08C19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08C19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08C19-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-04 |
| filingDate | 1992-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ecf825c9939858891b51e24207b30c5 |
| publicationDate | 1994-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5280081-A |
| titleOfInvention | Highly hydrogenated nonfunctional or functional terminated conjugated diene polymers |
| abstract | In a first embodiment of the present invention, poisoning or deactivation of conventional homogeneous catalysts to be used in hydrogenation of the backbone unsaturation in liquid monofunctional and difunctional-terminated conjugated diene polymers, is prevented by reacting a blocking agent compound with the functional end groups present in these polymers. More specifically, subsequent to formation of a selected starting material monofunctional or difunctional-terminated conjugated diene polymer, a suitable blocking agent is reacted with the functional end groups of the polymer enabling relatively inexpensive titanium, iron, cobalt, or nickel-based homogeneous catalysts to be used in hydrogenating the backbone unsaturation of the polymer to a high degree. Subsequent to hydrogenation, the polymer is subjected to conventional hydrolysis using a mineral acid or base to remove the blocking groups and return the hydrogenated conjugated diene polymer to its original functionality. In a second embodiment, conventional homogeneous catalysts based on cobalt, nickel, titanium, or iron are utilized to hydrogenate low molecular weight liquid copolymers and homopolymers to a high degree. More particularly, butadiene-alkenylpyridine and butadiene-acrylate liquid copolymers and butadiene homopolymers are formed in a conventional manner are hydrogenated using such catalysts. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004029722-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7241841-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6887956-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005261439-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007004844-A1 |
| priorityDate | 1991-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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