| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50907fc1b392e2bf592f74fb8123032d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-30 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
| filingDate |
2009-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2011-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f6431c0f5f8ef6f77a23061121eee3c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dac71245990ec1d8ad6f1f305ced924f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0dcb8c8fe0d93886bf220a6256b51ddb |
| publicationDate |
2011-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8017814-B2 |
| titleOfInvention |
Process for the preparation of polyether polyols |
| abstract |
A process for the preparation of a polyether polyol containing at most about 15 ppm of sodium and potassium, comprising: (a) reacting an initiator having at least two active hydrogen atoms with at least one alkylene oxide in the presence of a catalyst having an alkali metal hydroxide to form a polyether polyol reaction product; (b) neutralizing the polyether polyol reaction product obtained in step (a) by contacting this reaction product with phosphoric acid and water; and (c) removing the salt crystals from the polyether polyol and recovering the neutralized polyether polyol containing at most about 15 ppm of sodium and potassium, wherein no adsorption agent and no hydrate of a metal salt of the acid are used before, during or after the neutralization. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023158327-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-4230680-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8703684-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10131743-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012040877-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023156898-A1 |
| priorityDate |
2000-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |