METHOD OF PRELIMINARILY TREATING POLYMER WASTER BEFORE PROCESSING Russian patent published in 2007 - IPC C08J11/06

Abstract RU 2299896 C2

FIELD: waste processing.

SUBSTANCE: invention relates to processing secondary polymeric materials wherein thermoplastic wastes are preliminarily treated for 1 to 4 h with liquid or supercritical carbon dioxide at 15 to 200° C and pressure 60 to 600 atm. Waste is chiefly used in the form of granules or chips, or yet in the form of small profiled objects. Decolorized waste can be used for further processing via injection molding, rolling, pressing, or introduction thereof into composite materials.

EFFECT: improved environmental conditions and avoided stage wherein waste is sorted according to color.

5 cl, 13 ex

Similar patents RU2299896C2

Title	Year	Author	Number
REMOVABLE INK FOR PRINTING AND METHOD OF THEIR REMOVAL FROM CARRIER	2023	Zefirov Vadim Viktorovich Sizov Victor Evgenevich Galliamov Marat Olegovich	RU2819332C1
METHOD OF RECYCLING POLYMER WASTES	2009	Anikeev Vladimir Il'Ich	RU2430121C2
THERMOPLASTIC MOLDING COMPOSITION	2002	Belotserkovskij N.G. Savelenok N.A. Tolstokulakov G.I.	RU2217453C1
METHOD OF PRODUCING THERMOPLASTIC RESIN-BASE POROUS MATERIALS	1995	Barsuk V.N. Konyshev N.M. Korchakov V.F. Neshcheret S.S. Nosova A.G. Podchajnov S.F. Tatarenko O.F. Juzhaninov L.F.	RU2078098C1
MULTILAYER MATERIAL FOR PROTECTIVE COATINGS OF BUILDING STRUCTURES	1996	Kon'Kov F.O. Medvedev I.A. Burbelo A.A. Krjuchkov A.N. Knunjants M.I.	RU2117578C1
THERMOPLASTIC MOLDING BLEND	2002	Belotserkovskij N.G. Savelenok N.A. Tolstokulakov G.I.	RU2225875C2
METHOD OF PROCESSING POLYETHYLENE TEREPHTHALATE WASTE	2000	Chernorubashkin Aleksandr Ivanovich Pleskachevskij Jurij Mikhajlovich Sikanevich Aleksandr Vasil'Evich Gajduk Vera Filippovna Kudjan Sergej Georgievich	RU2188262C2
POLYPROPYLENE-BASED COMPOSITION	0	Gul Valentin Evgenevich Lyubeshkina Evgeniya Grigorevna Berezkin Vladimir Ivanovich Vilnits Samuil Avseevich Belova Lyudmila Timofeevna Evdokimov Dmitrij Petrovich	SU771126A1
METHOD OF PRODUCING DYED POLYMERIC MATERIAL	0	Kholodovich Rina Vladimirovna Stavnitser Isaj Iosifovich Larionova Lyudmila Nikolaevna Kostrichko Tamara Mikhajlovna	SU1331923A1
AMORPHOUS DYED PLATE OF CRYSTALLIZABLE THERMOPLASTIC	1996	Ursula Murshall Vol'Fgang Gavrish Rajner Brunov	RU2160667C2

RU 2 299 896 C2

Authors

Evdokimov Nikolaj Ivanovich

Dates

2007-05-27—Published

2004-07-01—Filed