DE2362919A1 - Verfahren zur kontinuierlichen hydrolyse von polyurethanschaum im fliessbett und gewinnung von produkten daraus - Google Patents
Verfahren zur kontinuierlichen hydrolyse von polyurethanschaum im fliessbett und gewinnung von produkten darausInfo
- Publication number
- DE2362919A1 DE2362919A1 DE2362919A DE2362919A DE2362919A1 DE 2362919 A1 DE2362919 A1 DE 2362919A1 DE 2362919 A DE2362919 A DE 2362919A DE 2362919 A DE2362919 A DE 2362919A DE 2362919 A1 DE2362919 A1 DE 2362919A1
- Authority
- DE
- Germany
- Prior art keywords
- hydrolysis
- polyurethane
- zone
- particulate
- polyurethane foam
- 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.)
- Pending
Links
- 230000007062 hydrolysis Effects 0.000 title claims description 89
- 238000006460 hydrolysis reaction Methods 0.000 title claims description 89
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 27
- 239000011496 polyurethane foam Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 17
- 238000011084 recovery Methods 0.000 title description 4
- 239000007789 gas Substances 0.000 claims description 41
- 229920002635 polyurethane Polymers 0.000 claims description 25
- 239000004814 polyurethane Substances 0.000 claims description 25
- 239000000047 product Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 150000004985 diamines Chemical class 0.000 claims description 13
- 230000003301 hydrolyzing effect Effects 0.000 claims description 12
- 239000012263 liquid product Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 4
- 238000005243 fluidization Methods 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000009826 distribution Methods 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000006260 foam Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 125000005442 diisocyanate group Chemical group 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- VYSYZMNJHYOXGN-UHFFFAOYSA-N ethyl n-aminocarbamate Chemical compound CCOC(=O)NN VYSYZMNJHYOXGN-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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)
- Polyurethanes Or Polyureas (AREA)
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31597772A | 1972-12-18 | 1972-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2362919A1 true DE2362919A1 (de) | 1974-07-11 |
Family
ID=23226933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2362919A Pending DE2362919A1 (de) | 1972-12-18 | 1973-12-18 | Verfahren zur kontinuierlichen hydrolyse von polyurethanschaum im fliessbett und gewinnung von produkten daraus |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5319039B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1018537A (enrdf_load_stackoverflow) |
| DE (1) | DE2362919A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2210494B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1456252A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4051212A (en) * | 1974-09-04 | 1977-09-27 | Bayer Aktiengesellschaft | Process for the continuous degradation of plastics |
| US4160749A (en) | 1977-03-15 | 1979-07-10 | Bayer Aktiengesellschaft | Process for dissociating polyurethane resins |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2862318D1 (en) * | 1978-11-29 | 1983-10-20 | Ford Motor Co | Hydrolysis of polyurethanes |
| DE3033330A1 (de) | 1980-09-04 | 1982-04-29 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von fluessigen gemischen von isocyanatgruppen aufweisenden verbindungen, sowie ihre verwendung als aufbaukomponente bei der herstellung von polyurethankunststoffen |
| FR3080623B1 (fr) * | 2018-04-27 | 2021-01-08 | Arkema France | Valorisation de resine (meth)acrylique par depolymerisation et hydrolyse |
| GB2616488B (en) * | 2022-09-02 | 2024-11-06 | Sru Innovations Ltd | Steam treatment of waste |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3225094A (en) * | 1962-06-15 | 1965-12-21 | Du Pont | Preparation of polyamines by steam hydrolysis of polyisocyanate reaction products |
-
1973
- 1973-09-18 CA CA181,391A patent/CA1018537A/en not_active Expired
- 1973-11-15 GB GB5302573A patent/GB1456252A/en not_active Expired
- 1973-12-12 FR FR7344393A patent/FR2210494B1/fr not_active Expired
- 1973-12-18 JP JP14041473A patent/JPS5319039B2/ja not_active Expired
- 1973-12-18 DE DE2362919A patent/DE2362919A1/de active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4051212A (en) * | 1974-09-04 | 1977-09-27 | Bayer Aktiengesellschaft | Process for the continuous degradation of plastics |
| US4160749A (en) | 1977-03-15 | 1979-07-10 | Bayer Aktiengesellschaft | Process for dissociating polyurethane resins |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2210494B1 (enrdf_load_stackoverflow) | 1977-08-19 |
| GB1456252A (enrdf_load_stackoverflow) | 1976-11-24 |
| JPS4989778A (enrdf_load_stackoverflow) | 1974-08-27 |
| JPS5319039B2 (enrdf_load_stackoverflow) | 1978-06-19 |
| FR2210494A1 (enrdf_load_stackoverflow) | 1974-07-12 |
| CA1018537A (en) | 1977-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OF | Willingness to grant licences before publication of examined application | ||
| OHN | Withdrawal |