WO1998007777A1 - Use of cashew nut husk oil in rubber and duroplastics recycling - Google Patents
Use of cashew nut husk oil in rubber and duroplastics recycling Download PDFInfo
- Publication number
- WO1998007777A1 WO1998007777A1 PCT/PT1997/000006 PT9700006W WO9807777A1 WO 1998007777 A1 WO1998007777 A1 WO 1998007777A1 PT 9700006 W PT9700006 W PT 9700006W WO 9807777 A1 WO9807777 A1 WO 9807777A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- recycling
- cashew nut
- duroplastics
- hcnc
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L93/00—Compositions of natural resins; Compositions of derivatives thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to the field of recycling rubbers and thermosetting plastics.
- Cashew shell oil (henceforth HCNC) is a by-product of the food industry, of the preparation of cashew nuts.
- This liquid which is located under the shell of the nut and which is released when it is opened, is a 9: 1 mixture of a fatty acid (anacardic acid, which carries a phenolic group to the benzene ring) with a diphenol (Cardol), both with side chains with 15 carbon atoms and 27 hydrogen and one to three double bonds.
- a fatty acid anacardic acid, which carries a phenolic group to the benzene ring
- Cardol diphenol
- HCNC can, at a higher or lower temperature, "melt" vulcanized recycling rubbers and other thermosets.
- the mixture is heated by kneading at a temperature between 200 and 300 ° C, and newly crosslinkable and / or vulcanizable liquids are obtained.
- Preparation - even when cold - of old rubber with HCNC improves - thanks to the causticity of this product - the "recasting" in new rubber.
- This crosslinking can be carried out - as the patent application PT 101,761 teaches us - cited above - thanks to a di- and / or polyisocyanate or with sulfur or with both.
- PT 101,761 teaches us - cited above - thanks to a di- and / or polyisocyanate or with sulfur or with both.
- the mechanical results improve greatly, if sulfur treated with HCNC is used.
- the acceleration and modification systems seem to react in the same way.
- HCNC Recycled rubber can be cold mixed with HCNC, sulfur, possibly accelerators and additives, and heated to a temperature around 150 ° C for 15 min. , to obtain appreciable "jumps" between particles of old rubber and / or new rubber.
- HCNC 100 g of HCNC are heated with 20 g of rubber powder from a car tire at 180 ° C. until the powder is "diluted" completely. The mixture is allowed to cool and 33 g of an MD1 (type 44V20 from Bayer) are added. A rubber of good elasticity and mechanical resistance is obtained.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU37888/97A AU3788897A (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut husk oil in rubber and duroplastics recycling |
BR9711222A BR9711222A (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut house oil and product obtained from its use |
CA 2263990 CA2263990A1 (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut husk oil in rubber and duroplastics recycling |
EP97934807A EP0922068A1 (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut husk oil in rubber and duroplastics recycling |
JP51063598A JP2001504523A (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut shell oil as a polymerizable depolymerizer in the regeneration of rubber and thermoset plastics |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT101907 | 1996-08-20 | ||
PT10190796A PT101907A (en) | 1996-08-20 | 1996-08-20 | Use of cashew nut oil - in recycling rubber and duroplastics. |
PT101929 | 1996-10-24 | ||
PT10192996A PT101929A (en) | 1996-10-24 | 1996-10-24 | Method for the vulcanisation of cashew nut shell oil and the product thus obtained |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998007777A1 true WO1998007777A1 (en) | 1998-02-26 |
Family
ID=26653456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/PT1997/000006 WO1998007777A1 (en) | 1996-08-20 | 1997-08-19 | Use of cashew nut husk oil in rubber and duroplastics recycling |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0922068A1 (en) |
JP (1) | JP2001504523A (en) |
AU (1) | AU3788897A (en) |
BR (1) | BR9711222A (en) |
CA (1) | CA2263990A1 (en) |
WO (1) | WO1998007777A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6180686B1 (en) | 1998-09-17 | 2001-01-30 | Thomas M. Kurth | Cellular plastic material |
KR20020064038A (en) * | 2001-01-31 | 2002-08-07 | 금호산업 주식회사 | Rubber composition with edible oil |
ES2207995A1 (en) * | 2000-08-25 | 2004-06-01 | Angel Corbera Alarcon | Tires are recycled by means of revulcanization of rubber with rubber extracted from used tires by scraping process |
US9045581B2 (en) | 2005-03-03 | 2015-06-02 | Rhino Linings Corporation | Polyols derived from a vegetable oil using an oxidation process |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7595094B2 (en) | 1998-09-17 | 2009-09-29 | Urethane Soy Systems, Co. | Vegetable oil-based coating and method for application |
US20020058774A1 (en) | 2000-09-06 | 2002-05-16 | Kurth Thomas M. | Transesterified polyol having selectable and increased functionality and urethane material products formed using the polyol |
JP2015117275A (en) * | 2013-12-17 | 2015-06-25 | 住化バイエルウレタン株式会社 | Use of cashew nutshell liquid as raw material for polyurethane resin |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1819416A (en) * | 1928-08-08 | 1931-08-18 | Harvel Corp | Compositions of materials and method for producing them |
-
1997
- 1997-08-19 BR BR9711222A patent/BR9711222A/en unknown
- 1997-08-19 CA CA 2263990 patent/CA2263990A1/en not_active Abandoned
- 1997-08-19 WO PCT/PT1997/000006 patent/WO1998007777A1/en not_active Application Discontinuation
- 1997-08-19 EP EP97934807A patent/EP0922068A1/en not_active Withdrawn
- 1997-08-19 JP JP51063598A patent/JP2001504523A/en active Pending
- 1997-08-19 AU AU37888/97A patent/AU3788897A/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1819416A (en) * | 1928-08-08 | 1931-08-18 | Harvel Corp | Compositions of materials and method for producing them |
Non-Patent Citations (1)
Title |
---|
N.D. GHATGE ET AL.: "Reclaiming scrap rubber", RUBBER AGE, vol. 105, no. 7, July 1973 (1973-07-01), NEW YORK, pages 35 - 38, XP002044758 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6180686B1 (en) | 1998-09-17 | 2001-01-30 | Thomas M. Kurth | Cellular plastic material |
ES2207995A1 (en) * | 2000-08-25 | 2004-06-01 | Angel Corbera Alarcon | Tires are recycled by means of revulcanization of rubber with rubber extracted from used tires by scraping process |
KR20020064038A (en) * | 2001-01-31 | 2002-08-07 | 금호산업 주식회사 | Rubber composition with edible oil |
US9045581B2 (en) | 2005-03-03 | 2015-06-02 | Rhino Linings Corporation | Polyols derived from a vegetable oil using an oxidation process |
Also Published As
Publication number | Publication date |
---|---|
JP2001504523A (en) | 2001-04-03 |
AU3788897A (en) | 1998-03-06 |
EP0922068A1 (en) | 1999-06-16 |
CA2263990A1 (en) | 1998-02-26 |
BR9711222A (en) | 1999-08-17 |
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