http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2752784-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50def7e23a113a43599325d77086d629 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-22 |
| filingDate | 2020-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_742ff92f6b6f3e014089b8e4393e4b77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78f300d4b1a7226ae578b65d18258fe7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ceb9ebef400140e54fe30157d90b2a8b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9694aaea207c7b5d408643fa70ddbaf7 |
| publicationDate | 2021-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2752784-C1 |
| titleOfInvention | Method for obtaining hydrosilation catalyst based on complex of platinum with carbene hydrosilylation ligands obtained by this method |
| abstract | FIELD: chemical industry.SUBSTANCE: invention relates to a method for obtaining a hydrosilylation catalyst based on a platinum complex with carbene ligands, which consists in taking 0.5 mmol of hydrogen hexachloroplatinate hexahydrate H2PtCl6× 6H2O and dissolving it in 2.5 ml of isopropanol with stirring until completely dissolved; then take 5.0 mmol of sodium bicarbonate, 2.69 mmol of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane and 1.5 ml of isopropanol are added to it and the resulting suspension is mixed for 15 minutes at a temperature of 40 to 60°C; next, the resulting solution of hydrogen hexachloroplatinate is added to the resulting suspension of sodium bicarbonate and mixed for 2-4 hours at a reaction mixture temperature of 40 to 60°C; then the resulting mixture is cooled to room temperature, filtered in an inert atmosphere; then the solvent isopropanol is distilled from the resulting filtrate under vacuum at a temperature of 50°C until a highly viscous oily liquid containing Pt2(dvtms)3is formed; next, 0.5–1.0 ml of o-xylene, 0.53 mmol of 9-cyclopentyl-1,3,7-trimethylxanthinium bromide or 0.53 mmol of 9-isopropyl-1,3,7-trimethylxanthinium bromide, 0.77 mmol of potassium tert-butylate are added to the resulting solution sequentially with continuous stirring, the resulting mixture is stirred for 16 hours at room temperature in an inert atmosphere; then the resulting mixture is filtered, from the resulting the filtrate, the solvents isopropanol and o-xylene are distilled off at reduced pressure and at a temperature of 70°C; the resulting powder is washed, dried under vacuum at room temperature, and a target platinum catalyst containing a Pt(dvtms)complex is obtained(L), where dvtms is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, L = 9-cyclopentyl-1,3,7-trimethylxanthinium or L = 9-isopropyl-1,3,7-trimethylxanthinium. The invention also relates to a platinum carbene complex of the Pt(dvtms)(L) type, where dvtms is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane; L = 9-cyclopentyl-1,3,7-trimethylxanthinium (L=I) or L = 9-isopropyl-1,3,7-trimethylxanthinium (L=II) obtained by the method described above, as well as to a hydrosilation reaction catalyst containing a Pt(dvtms)(L)-type platinum carbene complex, described above, where dvtms is 1,3-divinyl-1,1,3,3-tetramethyldisiloxane; L = 9-cyclopentyl-1,3,7-trimethylxanthinium or L = 9-isopropyl-1,3,7-trimethylxanthinium.EFFECT: catalyst must be stable to decomposition under the influence of sunlight in the temperature range of 60-100°C, ensure reproducibility of the results of catalysis of the hydrosilation reaction on an industrial scale, have good solubility in silicone oligomers (rubbers), be a solid crystalline substance soluble in non-polar solvents.3 cl, 1 dwg, 6 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114377727-A |
| priorityDate | 2020-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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