http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S55125120-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1979-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a478faeda003ee02bac87f17882d34d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf04b4b6d4bf8c3a0240bd16fe428242 |
| publicationDate | 1980-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S55125120-A |
| titleOfInvention | Production of polyester/polyether block copolymer |
| abstract | PURPOSE: To produce a block copolymer having improved polycondensability, with the reduction in the tetrahydrofuran byproduct, by reacting a dibasic acid with a glycol and a polytetramethylene glycol by using a catalyst an organotitanim compound and an organotin compound. n CONSTITUTION: In the production of a polyester/polyether block copolymer containing, as main components, a dibasic acid containing at least 40mol% of terephthalic acid component or an ester-forming derivative of said dibasic acid, a glycol having a molecular weight of below 300, and containing at least 70mol% of butanediol-1,4 and a polytetramethylene glycol having a molecular weight of 300W6000, as the reaction catalyst, a combination is used of an organotitanium compound represented by the formula I or II, wherein R 1 is an alkyl and M is Ca, Mg or Sr, and an organotin compound represented by the formula III or IV, wherein R 2 is an alkyl or an aryl; X 1 WX 3 each is an alkyl, aryl, cycloalkyl, acyloxy or hydroxyl group or a halogen and Y is O or S. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1979-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.