http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-288507-A7
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af471f2fc41294067ae891ad9a692496 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-28 |
| filingDate | 1989-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6420c428985c89e6514a120e5fab5c66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ce0dbdd904d7cdd9564b10eba8471d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c304a1cf521a4a177e6bfbc2eeb64a5b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89759da5ae92d4b5c391ffa6ac2e63ca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b56f08ea873a57d7b37de74b0dcf6745 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18692a0267f1146c5233f6bbdb28d27f |
| publicationDate | 1991-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-288507-A7 |
| titleOfInvention | Non-printing, two-step process for the production of high molecular weight polyoxypropyls |
| abstract | In the pressureless two-stage synthesis of high molecular weight polyoxypropylenes to avoid Zwischenentwaesserungen and bypassing the use of defined diols as starting components in a first Oxpropylierungsstufe a low molecular weight polyoxypropylene having a hydroxyl value, which is 2 to 6 times the hydroxyl number of the final product, and aqueous alkali, with which the reaction mixture is adjusted to an alkali number of 45 to 55 mg KOH / g and a water content of 3 to 3.5%, reacted with propylene oxide until the hydroxyl value has again reached 2 to 6 times the hydroxyl number of the end product. After activation by renewed addition of aqueous alkali solution to an alkali number range of 30 to 40 mg KOH / g and a water content of 2 to 2.6%, in a second stage it is oxpropylated with propylene oxide to the end product. {Polyoxypropylene, high molecular weight; Oxpropylation, two-step; Oxpropylation, depressurised; Caustic lye, aqueous; Zwischenentwaesserung; Alkali number; Start component; hydroxyl; diol; Water content} |
| priorityDate | 1989-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.