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2 437 901

(13)

(51)

IPC

C08J11/16(2006-01-01)

C08L27/18(2006-01-01)

B29B17/04(2006-01-01)

(21) (22)

Application

2010127070/05, 2010-07-01

(24)

Start date

2010-07-01

(22)

Actual filing date

2010-07-01

(45)

Published

2011-12-27

(72)

Inventor

Kantaev Aleksandr SergeevichBuznik Vjacheslav MikhajlovichD'Jachenko Aleksandr Nikolaevich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Issledovatel'Skij Tomskij Politekhnicheskij Universitet"

METHOD OF PROCESSING POLYTETRAFLUOROETHYLENE WASTES Russian patent published in 2011 - IPC C08J11/16 C08L27/18 B29B17/04

Abstract RU 2437901 C1

FIELD: chemistry.

SUBSTANCE: invention relates to processing polytetrafluoroethylene (PTFE) wastes to obtain dispersion powder for anticorrosion, heat-resistant and chemical-resistant coatings. The method involves thermal decomposition, sublimation of the decomposition products and condensation. PTFE is first mixed with ammonium bifluoride (NH₄HF₂) in weight ratio ranging from 99:1 to 2.3:1. The mixture is held at 560-590°C for 1-1.5 hours. While heating the mixture, the formed gas phase collected and condensed at 10-90°C.

EFFECT: invention enables to obtain dispersion powder with high output and sufficient adhesion power.

1 tbl, 6 ex

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RU 2 437 901 C1

Authors

Kantaev Aleksandr Sergeevich

Buznik Vjacheslav Mikhajlovich

D'Jachenko Aleksandr Nikolaevich

Dates

2011-12-27—Published

2010-07-01—Filed