GB708788A - Improvements relating to processes for reclaiming rubber from vulcanised rubber and for destroying textile material in vulcanised and unvulcanised rubber, more especially vulcanised and unvulcanised rubber scrap - Google Patents
Improvements relating to processes for reclaiming rubber from vulcanised rubber and for destroying textile material in vulcanised and unvulcanised rubber, more especially vulcanised and unvulcanised rubber scrapInfo
- Publication number
- GB708788A GB708788A GB1591652A GB1591652A GB708788A GB 708788 A GB708788 A GB 708788A GB 1591652 A GB1591652 A GB 1591652A GB 1591652 A GB1591652 A GB 1591652A GB 708788 A GB708788 A GB 708788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- vulcanised
- vulcanized
- reclaiming
- textile material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C08J11/16—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 inorganic material
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
A process for reclaiming vulcanized rubber, e.g. from vulcanized rubber scrap and for destroying textile material contained in vulcanized and unvulcanized rubber, more especially vulcanized and unvulcanized rubber scrap, the vulcanized rubber for reclaiming or the vulcanized or unvulcanized rubber for destruction of its textile material is treated at a temperature ranging from 170 DEG to 240 DEG C. and at a corresponding pressure in an autoclave with an aqueous solution of alkali of such low alkali concentration, e.g. 0.2 to 0.5 per cent. that at the end of the treatment the reaction of the solution is neutral or only slightly acid. Plasticizing agents, oil and any other of the products usually employed in alkali rubber reclaiming processes may also be used. In an Example 500 kg. of ground tyre rubber scrap are treated with 1000 kg. of a 0.3 per cent. aqueous solution of sodium hydroxide in an autoclave at a temperature ranging from 170 DEG to 240 DEG C. under a pressure maintained in correspondence with the temperature, for a time which may vary in approximately inverse ratio to the temperature from 8 to 12 hours after which a reclaimed rubber of good chemical and physical characteristics is obtained the textile material being completely destroyed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT308901X | 1951-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708788A true GB708788A (en) | 1954-05-12 |
Family
ID=11232686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1591652A Expired GB708788A (en) | 1951-07-31 | 1952-06-24 | Improvements relating to processes for reclaiming rubber from vulcanised rubber and for destroying textile material in vulcanised and unvulcanised rubber, more especially vulcanised and unvulcanised rubber scrap |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE506576A (en) |
| CH (1) | CH308901A (en) |
| DE (1) | DE918897C (en) |
| GB (1) | GB708788A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4204094A1 (en) * | 1992-02-12 | 1993-08-19 | Arnold Dr Willmes | Hydrothermal decomposition of polymers - esp. de-vulcanisation of rubber, for reuse of sepd. components |
-
0
- BE BE506576D patent/BE506576A/xx unknown
-
1952
- 1952-03-19 CH CH308901D patent/CH308901A/en unknown
- 1952-06-24 GB GB1591652A patent/GB708788A/en not_active Expired
- 1952-06-29 DE DEP7901A patent/DE918897C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE918897C (en) | 1954-10-07 |
| CH308901A (en) | 1955-08-15 |
| BE506576A (en) | 1900-01-01 |
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