GB260620A - Process and apparatus for regenerating vulcanised rubber - Google Patents
Process and apparatus for regenerating vulcanised rubberInfo
- Publication number
- GB260620A GB260620A GB2715626A GB2715626A GB260620A GB 260620 A GB260620 A GB 260620A GB 2715626 A GB2715626 A GB 2715626A GB 2715626 A GB2715626 A GB 2715626A GB 260620 A GB260620 A GB 260620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rubber
- lbs
- sulphur
- heated
- drum
- 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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
260,620. Soc. Italiana Pirelli, (Assignees of Mrach, A.). Oct. 31, 1925, [Convention date]. Drawings to Specification. Devulcanizing and using waste rubber.- Vulcanized rubber is regenerated by adding to it a solution of caustic alkalis or potassium and sodium carbonates of moderate concentration (35‹-36‹ BÚ) in quantities slightly in excess of that chemically corresponding to the total sulphur in the rubber, and raising the temperature to that required, under atmospheric pressure, while agitating the mass. In an example, 220 lbs. of rubber scrap is ground and placed in a rotatable drum capable of being heated and cooled externally, with 66 lbs. of caustic soda at 35‹ BÚ. The drum is rotated and heated rapidly to 135‹ C. and then slowly to 210‹ C., the whole process taking seven hours. Fabric may be destroyed by a preliminary acid treatment. The Specification as open to inspection under Sect. 91 (3) (a) states that other salts capable of combining with sulphur may be used. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT260620X | 1925-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB260620A true GB260620A (en) | 1927-07-28 |
Family
ID=11218537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2715626A Expired GB260620A (en) | 1925-10-31 | 1926-10-29 | Process and apparatus for regenerating vulcanised rubber |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE503648C (en) |
FR (1) | FR623190A (en) |
GB (1) | GB260620A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008025521A1 (en) * | 2006-08-30 | 2008-03-06 | Pac Holding S.A. | Process and apparatus for utilizing oxygen-containing polymers |
-
1926
- 1926-10-14 DE DES76529D patent/DE503648C/en not_active Expired
- 1926-10-15 FR FR623190D patent/FR623190A/en not_active Expired
- 1926-10-29 GB GB2715626A patent/GB260620A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008025521A1 (en) * | 2006-08-30 | 2008-03-06 | Pac Holding S.A. | Process and apparatus for utilizing oxygen-containing polymers |
Also Published As
Publication number | Publication date |
---|---|
DE503648C (en) | 1930-07-24 |
FR623190A (en) | 1927-06-17 |
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