http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4826502-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03627f82d4edc6567f9627df6efdde5d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M11-55 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M11-55 |
| filingDate | 1987-07-13^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1989-05-02^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de9793b54e4a00380f10b11ea659c541 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0138e49af466ce07915890e0133254f5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5762dc863897ddef5feff837cd53c11 |
| publicationDate | 1989-05-02^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4826502-A |
| titleOfInvention | Sulfonation of hydroxyethylated polybenzimidazole fibers |
| abstract | A process for sulfonating preformed hydroxyethylated polybenzimidazole fibers is disclosed. The process comprises the steps of forming an hydroxyethylated polybenzimidazole spinning solution; spinning hydroxyethylated polybenzimidazole fibers, sulfonating the fibers by contacting them with a sulfonating agent, and heating the fiber in an inert atmosphere at a temperature and for a period of time sufficient to convert the ionic bonds, formed in the sulfonating step to covalent bonds, thereby, providing a covalently bonded, sulfonated, hydroxyethylated polybenzimidazole fiber. The fibers produced by the process of the present invention exhibit cation selectivity for electrodialysis and electrochemical applications. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5216114-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6042968-A |
| priorityDate | 1987-07-13^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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