http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105315452-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 |
| filingDate | 2015-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105315452-B |
| titleOfInvention | The preparation method of soluble polyurethane grouting material PPG |
| abstract | The invention belongs to PPG synthesis technical field, and in particular to a kind of preparation method of soluble polyurethane grouting material PPG.First-stage polymerization reacts：Add Neosorb, base metal catalysts and solvent in a kettle. first, intermediate PPG is made；Back segment polymerisation：Intermediate PPG is taken to put into reactor, it is continuous into intermediate PPG that epoxides is added dropwise, obtain required PPG.Polyetherfunctional degree produced by the present invention is 6, and molecular weight is 15,000 22000.This high functionality, super high molecular weight, low-unsaturation-degree polyethers after soluble polyurethane grouting material is made, have higher bag water rate and intensity.In Bulk polymerization reaction, oxirane accounts for the 50 90% of epoxides total amount, can improve the activity of polyethers, has faster solid water speed in obtained soluble polyurethane grouting material. |
| priorityDate | 2015-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.