CA2258305C - Decomposition de polymeres par des composes nor-hals - Google Patents
Decomposition de polymeres par des composes nor-hals Download PDFInfo
- Publication number
- CA2258305C CA2258305C CA 2258305 CA2258305A CA2258305C CA 2258305 C CA2258305 C CA 2258305C CA 2258305 CA2258305 CA 2258305 CA 2258305 A CA2258305 A CA 2258305A CA 2258305 C CA2258305 C CA 2258305C
- Authority
- CA
- Canada
- Prior art keywords
- acid
- copolymers
- polymers
- compounds
- styrene
- 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 - Fee Related
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
- C08J11/28—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 by treatment with organic compounds containing nitrogen, sulfur or phosphorus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/50—Partial depolymerisation
-
- 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)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
L'invention concerne un procédé pour décomposer des polymères, notamment des plastiques usagés et vieux, dans lequel des composés dits NOR-HALS, par exemple des composés contenant le groupe (III) dans lequel R* représente alkyle C1-C20, alkyle C1-C20 substitué par OH, cycloalkyle C5-C12 éventuellement substitué par alkyle C1-C4, ou bien alkyle C2-C20 interrompu par O ou S, sont ajoutés et chauffés à des températures supérieures aux températures usuelles de mise en oeuvre des polymères (à partir de 280 DEG C).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH159896 | 1996-06-26 | ||
CH1598/96 | 1996-06-26 | ||
PCT/EP1997/003133 WO1997049737A1 (fr) | 1996-06-26 | 1997-06-17 | Decomposition de polymeres par des composes nor-hals |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2258305A1 CA2258305A1 (fr) | 1997-12-31 |
CA2258305C true CA2258305C (fr) | 2006-10-10 |
Family
ID=37114325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2258305 Expired - Fee Related CA2258305C (fr) | 1996-06-26 | 1997-06-17 | Decomposition de polymeres par des composes nor-hals |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2258305C (fr) |
-
1997
- 1997-06-17 CA CA 2258305 patent/CA2258305C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2258305A1 (fr) | 1997-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170619 |