http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112898572-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ac6ef263b2e3262e91706d6867b6d05 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-06 |
| filingDate | 2021-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80d6b10096610326488ad0e3b8b802ae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e414e6bf25686ba31e4a4f08c2c487e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ecf7185bc441485801197290572003b |
| publicationDate | 2021-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112898572-A |
| titleOfInvention | A kind of preparation method of MQ resin with controllable molecular weight and hydroxyl content |
| abstract | The invention relates to a preparation method of MQ resin with controllable molecular weight and hydroxyl content. The preparation method comprises the following steps: adding water glass diluent into acid catalyst diluent at a relatively low temperature, stirring evenly to obtain raw materials Slurry; add a solvent to the raw material slurry, adjust the pH value of the reaction system to be no greater than 1, then add M group siloxane and toluene to carry out a hydrolysis condensation reaction; after the hydrolysis condensation reaction, take the upper organic layer, stir and concentrate to a solid content of 60 -70%, then add toluene for extraction to obtain a concentrate; add an organic base catalyst and additives to the concentrate, continue the reaction, neutralize and filter the product to obtain a weight-average molecular weight of 2000-8000 and a hydroxyl content of 0.5-3 % MQ resin product. The molecular weight distribution of the MQ resin product obtained by the preparation method is relatively narrow, and it is not easy to gel during the reaction. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113321809-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113321809-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115353627-A |
| priorityDate | 2021-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.