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1. (WO1999009092) THE REPROCESSING OF POLYMERIC PRODUCTS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1999/009092 International Application No.: PCT/US1998/017383
Publication Date: 25.02.1999 International Filing Date: 21.08.1998
IPC:
C08J 11/08 (2006.01) ,C08J 11/28 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11
Recovery or working-up of waste materials
04
of polymers
06
without chemical reactions
08
using selective solvents for polymer components
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11
Recovery or working-up of waste materials
04
of polymers
10
by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
18
by treatment with organic material
28
by treatment with organic compounds containing nitrogen, sulfur or phosphorus
Applicants:
VAN DEN HEEVER, Pieter, Johannes [ZA/ZA]; ZA (UsOnly)
EDSVIEW BELLEGGINGS (PROPRIETARY) LIMITED [ZA/ZA]; Charter House 5th floor 129 Bosman Street Pretoria 0001, ZA (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
HANDELMAN, Joseph, H. [US/US]; US (BB)
Inventors:
VAN DEN HEEVER, Pieter, Johannes; ZA
Agent:
HANDELMAN, Joseph, H.; Ladas & Parry 26 West 61st Street New York, NY 10023 , US
Priority Data:
97/752021.08.1997ZA
Title (EN) THE REPROCESSING OF POLYMERIC PRODUCTS
(FR) RETRAITEMENT DE PRODUITS POLYMERES
Abstract:
(EN) A process for reprocessing polymeric products, for example, used rubber tyres or PVC-coated metal products, includes contacting the polymeric product with at least one vegetable oil such as sunflower seed oil. The vegetable oil in contact with the polymeric product is subjected to an elevated temperature, for example, 60 - 150 °C, for a sufficient time to liquify the polymer. The liquified polymer is then separated from the metals and canvas/belting products in the polymeric product in order to recover the polymer and the metals and canvas/belting products. The vegetable oil optionally contains an organic acid such as acetic acid to enhance or assist with the rate at which reprocessing takes place.
(FR) Procédé de retraitement de produits polymères, comme, par exemple, des pneumatiques en caoutchouc usagés ou des produits métalliques revêtus de PVC usagés, qui consiste à mettre le produit polymère en contact avec au moins une huile végétale comme de l'huile de tournesol. L'huile végétale en contact avec le produit polymère est exposée à une température élevée, par exemple 60 à 150 °C, pendant suffisamment longtemps pour que le polymère se liquéfie. Le polymère liquéfié est ensuite séparé des métaux et des produits formant la toile/nappe d'armature du produit polymère de sorte que le polymère, les métaux et les produits formant la toile/nappe d'armature soient récupérés. L'huile végétale contient éventuellement un acide organique comme de l'acide acétique qui permet d'augmenter la vitesse de retraitement ou d'aider à son maintien.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)