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2 497 846

(13)

(51)

IPC

C08J11/00(2006-01-01)

C08J11/04(2006-01-01)

C08F14/26(2006-01-01)

B29B17/00(2006-01-01)

B29K27/12(2006-01-01)

B29K27/18(2006-01-01)

(21) (22)

Application

2012116804/04, 2012-04-24

(24)

Start date

2012-04-24

(22)

Actual filing date

2012-04-24

(45)

Published

2013-11-10

(72)

Inventor

Rogov Vitalij EvdokimovichTsyrenova Galina Dashievna

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Uchrezhdenie Nauki Bajkal'Skij Institut Prirodopol'Zovanija Sibirskogo Otdelenija Rossijskoj Akademii Nauk So Ran)

METHOD OF RECYCLING POLYTETRAFLUOROETHYLENE WASTES Russian patent published in 2013 - IPC C08J11/00 C08J11/04 C08F14/26 B29B17/00 B29K27/12 B29K27/18

Abstract RU 2497846 C1

FIELD: chemistry.

SUBSTANCE: invention relates to complete oxidation of polytetrafluoroethylene and specifically to a method of recycling polytetrafluoroethylene (PTFE) wastes. The method of recycling PTFE wastes involves grinding PTFE wastes to particle size smaller than 0.2 mm, mixing with an oxidising agent and heating. The oxidising agent used is lead oxide in weight ratio of 1:(0.8-1.0). The mixture is pressed into briquettes at pressure of 500-600 kg/cm² and heated to 400°C.

EFFECT: simple and cheap process of recycling PTFE and obtaining lead fluoride powder which can be used as a solid lubricant in powder metallurgy.

1 cl

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RU 2 497 846 C1

Authors

Rogov Vitalij Evdokimovich

Tsyrenova Galina Dashievna

Dates

2013-11-10—Published

2012-04-24—Filed