DE2207379C3 - - Google Patents
Info
- Publication number
- DE2207379C3 DE2207379C3 DE2207379A DE2207379A DE2207379C3 DE 2207379 C3 DE2207379 C3 DE 2207379C3 DE 2207379 A DE2207379 A DE 2207379A DE 2207379 A DE2207379 A DE 2207379A DE 2207379 C3 DE2207379 C3 DE 2207379C3
- Authority
- DE
- Germany
- Prior art keywords
- recovery
- polyethers
- approx
- polyether
- urethane
- 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
- 229920000570 polyether Polymers 0.000 claims description 17
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 230000029087 digestion Effects 0.000 claims description 6
- 238000003776 cleavage reaction Methods 0.000 claims description 4
- 230000007017 scission Effects 0.000 claims description 4
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 150000003673 urethanes Chemical class 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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
- C08J11/14—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 steam or water
-
- 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
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
-
- 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2207379A DE2207379B2 (de) | 1972-02-17 | 1972-02-17 | Verfahren zur Rückgewinnung von Polyethern aus Polyätherurethankunststoffen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2207379A DE2207379B2 (de) | 1972-02-17 | 1972-02-17 | Verfahren zur Rückgewinnung von Polyethern aus Polyätherurethankunststoffen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2207379A1 DE2207379A1 (de) | 1973-08-30 |
| DE2207379B2 DE2207379B2 (de) | 1978-06-22 |
| DE2207379C3 true DE2207379C3 (enrdf_load_stackoverflow) | 1979-03-22 |
Family
ID=5836183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2207379A Granted DE2207379B2 (de) | 1972-02-17 | 1972-02-17 | Verfahren zur Rückgewinnung von Polyethern aus Polyätherurethankunststoffen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2207379B2 (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399236A (en) | 1980-09-13 | 1983-08-16 | Bayer Aktiengesellschaft | Process for separating polyurethane hydrolyzates into polyether and diamine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601787A (en) * | 1977-08-22 | 1981-11-04 | Ford Motor Co | Hydrolytic decomposition method and apparatus |
| DE2854940A1 (de) * | 1978-12-20 | 1980-07-10 | Bayer Ag | Verfahren zur auftrennung von polyurethanschaumstoff-hydrolysaten in polyol und diamin |
| DE4028724C2 (de) * | 1990-09-10 | 1997-04-30 | Eisenmann Kg Maschbau | Verfahren und Vorrichtung zur Entsorgung und Verbrennung von Produktionsrückständen aus Polyurethan-Schaumstoffen |
| JP2024544908A (ja) | 2021-11-12 | 2024-12-05 | コベストロ、ドイチュラント、アクチエンゲゼルシャフト | ポリウレタン製品から原料を回収する方法 |
| WO2025125284A1 (de) | 2023-12-14 | 2025-06-19 | Covestro Deutschland Ag | Verfahren zur wiedergewinnung von wertstoffen aus polyurethanschaumstoffen |
| WO2025125285A1 (de) | 2023-12-14 | 2025-06-19 | Covestro Deutschland Ag | Verfahren zur wiedergewinnung von wertstoffen aus polyurethanschaumstoffen |
-
1972
- 1972-02-17 DE DE2207379A patent/DE2207379B2/de active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399236A (en) | 1980-09-13 | 1983-08-16 | Bayer Aktiengesellschaft | Process for separating polyurethane hydrolyzates into polyether and diamine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2207379A1 (de) | 1973-08-30 |
| DE2207379B2 (de) | 1978-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |