http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2708641-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fc72f0ec18defa46c758fcdbb69e6e5e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-82 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 |
| filingDate | 2019-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7861b375c3d3554c29f7a1f778e9aa0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7617283175d150a3bb25c8104c9ac905 |
| publicationDate | 2019-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2708641-C1 |
| titleOfInvention | Method of producing terephthalate and benzoate plasticizers from by-products |
| abstract | FIELD: technological processes.SUBSTANCE: invention relates to a method of producing terephthalate and benzoate plasticizers of PVC using as feedstock by-products of chemical industries – terephthalic technical watercut acid (TTWA) and stillage residue of rectification 2-ethylhexanol (SRREH). Method is characterized by that of SRREH separation of two alcohol fractions – 2-ethylhexanol at pressure of 8–14 mm Hg and temperature of vapors – 40–110 °C with content of 2-ethylhexanol from 45 to 75 wt% and diol at pressure of 8–14 mm Hg and temperature of vapor 110–200 °C with content of 2,4-diethyl-1,3-octandiol from 25 to 50 wt% – and firstly esterification of pre-dried TTWA 2-ethylhexanol fraction to obtain terephthalate plasticizer and 2-ethylhexyl esters of benzoic and toluic acid, distilled from terephthalate plasticizer at pressure 8–14 mm Hg and temperature of vapors in range of 80–200 °C benzoate fraction containing from 70 to 90 wt% mixture of 2-ethylhexyl esters of toluic and benzoic acids, and the benzoate fraction is re-esterified with a diol fraction, taken from the molar ratio of 2,4-diethyl-1,3-octanediol and esters of benzoic and toluic acid in range of 1:1.5–2.0, at atmospheric pressure and temperature in cube of 180–280 °C with simultaneous distillation of released 2-ethylhexanol fraction, then unreacted compounds are distilled at pressure of 8–14 mm Hg and vapor temperature of 50–200 °C and obtain in the cube a benzoate plasticizer consisting of a mixture of esters of benzoic and toluic acid with 2,4-diethyl-1,3-octandiol.EFFECT: method of producing cheap PVC plasticizers, wider raw material sources, more complete processing of by-products, reduced amount of wastes.4 cl, 1 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113214078-A |
| priorityDate | 2019-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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