METHOD OF PROCESSING POLYTETRAFLUOROETHYLENE

FIELD: chemistry.SUBSTANCE: process is carried out at pressure of 10-15 mmHg and temperature of up to 560°C with contact time of 40 s. The obtained pyrolysate is taken for fractionation, which is carried out at pressure of up to 0.25 MPa.EFFECT: high output of tetrafluoroethylene with low content of...

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Hauptverfasser:	BARABANOV VALERIJ GEORGIEVICH, VINOGRADOV DMITRIJ VIKTOROVICH, OZOL SVETLANA IVANOVNA, ROZHDESTVENSKAJA OL'GA VIKTOROVNA, MITICHUK VADIM DMITRIEVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Zusammenfassung:	FIELD: chemistry.SUBSTANCE: process is carried out at pressure of 10-15 mmHg and temperature of up to 560°C with contact time of 40 s. The obtained pyrolysate is taken for fractionation, which is carried out at pressure of up to 0.25 MPa.EFFECT: high output of tetrafluoroethylene with low content of impurities.2 cl, 1 tbl, 10 ex Изобретение относится к способу переработки политетрафторэтилена пиролизом с образованием тетрафторэтилена. Процесс проводят под давлением 10-15 мм рт.ст. и температуре до 560°С при времени контакта до 40 с. Полученный пиролизат направляют на ректификацию, проводимую под давлением до 0,25 МПа. В результате достигается высокий выход тетрафторэтилена с низким содержанием примесей. 1 з.п. ф-лы, 1 табл., 10 пр.