http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1337231-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8fdf4bd252086a802c43c7d912459596 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bfdf49224a405be1f7b653c56ebad94 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G61-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate | 1988-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ea1ad1510e7c5691b4897e57feda5ac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99e749c9c7e88a2fef8adb29f0ba7ddf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_afb2a86fbcac515141d026a2789caff3 |
| publicationDate | 1995-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1337231-C |
| titleOfInvention | Process for producing poly (para-phenylenesulfide) |
| abstract | In a process for producing poly (p-phenylenesulfide) from an alkali metal sulfide and a p-dihalobenzene, a product polymer of an advantageously increased molecular weight is obtained by: providing a mixture comprising an alkali metal sulfide, a polar aprotic solvent and a carbox-ylic acid sodium salt represented by the general formula: ZCOONa (wherein Z is a C6 - C20 aromatic hydrocarbon group or a substituted or unsabstituted pyridyl group , where substituents R, which may be the same or different, represent each a C1 - C20 organic radical and n is an integer of from 0 to 4), the content of water present in said mixture apart from any water of hydration or crystal-lization which may be contained in said alkali metal sulfide and carboxylic acid sodium salt being at least 5 moles per mole of said alkali metal sulfide present; thermally dehydrating said alkali metal sulfide in said mixture by removing at least part of the water from said mixture; and then contacting the resulting dehydrated mixture with a p-dihalobenzene so as to produce the intended polymer. |
| priorityDate | 1987-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 121.