DE2516863B2 - Verfahren zum umwandeln von abfaellen biegsamer polyurethanschaumstoffe in ein homogenes polyolgemisch - Google Patents
Verfahren zum umwandeln von abfaellen biegsamer polyurethanschaumstoffe in ein homogenes polyolgemischInfo
- Publication number
- DE2516863B2 DE2516863B2 DE19752516863 DE2516863A DE2516863B2 DE 2516863 B2 DE2516863 B2 DE 2516863B2 DE 19752516863 DE19752516863 DE 19752516863 DE 2516863 A DE2516863 A DE 2516863A DE 2516863 B2 DE2516863 B2 DE 2516863B2
- Authority
- DE
- Germany
- Prior art keywords
- waste
- foam
- weight
- mixture
- foams
- 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.)
- Ceased
Links
- 239000002699 waste material Substances 0.000 title claims description 78
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 23
- 239000011496 polyurethane foam Substances 0.000 title claims description 23
- 229920005903 polyol mixture Polymers 0.000 title claims description 11
- 239000006260 foam Substances 0.000 claims description 86
- 239000000203 mixture Substances 0.000 claims description 32
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- 150000002009 diols Chemical class 0.000 claims description 18
- -1 aliphatic diols Chemical class 0.000 claims description 14
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 239000011495 polyisocyanurate Substances 0.000 claims description 5
- 229920000582 polyisocyanurate Polymers 0.000 claims description 5
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 150000002334 glycols Chemical class 0.000 claims description 4
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 4
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 claims 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims 1
- 235000009120 camo Nutrition 0.000 claims 1
- 235000005607 chanvre indien Nutrition 0.000 claims 1
- 239000011487 hemp Substances 0.000 claims 1
- 229920005862 polyol Polymers 0.000 description 31
- 150000003077 polyols Chemical class 0.000 description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- 238000003756 stirring Methods 0.000 description 18
- 239000000047 product Substances 0.000 description 17
- 229920000570 polyether Polymers 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000004721 Polyphenylene oxide Substances 0.000 description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 11
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 125000002947 alkylene group Chemical group 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000008240 homogeneous mixture Substances 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- 229920001228 polyisocyanate Polymers 0.000 description 4
- 239000005056 polyisocyanate Substances 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920006389 polyphenyl polymer Polymers 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 3
- 229940029284 trichlorofluoromethane Drugs 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 239000012456 homogeneous solution Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- KYVBNYUBXIEUFW-UHFFFAOYSA-N 1,1,3,3-tetramethylguanidine Chemical compound CN(C)C(=N)N(C)C KYVBNYUBXIEUFW-UHFFFAOYSA-N 0.000 description 1
- OYWRDHBGMCXGFY-UHFFFAOYSA-N 1,2,3-triazinane Chemical compound C1CNNNC1 OYWRDHBGMCXGFY-UHFFFAOYSA-N 0.000 description 1
- 229940015975 1,2-hexanediol Drugs 0.000 description 1
- 229940031723 1,2-octanediol Drugs 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- FHKSXSQHXQEMOK-UHFFFAOYSA-N hexane-1,2-diol Chemical compound CCCCC(O)CO FHKSXSQHXQEMOK-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- AEIJTFQOBWATKX-UHFFFAOYSA-N octane-1,2-diol Chemical compound CCCCCCC(O)CO AEIJTFQOBWATKX-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 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
- C08J11/18—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
- C08J11/22—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 oxygen-containing compounds
- C08J11/24—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 oxygen-containing compounds containing hydroxyl groups
-
- 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)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46485674A | 1974-04-29 | 1974-04-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2516863A1 DE2516863A1 (de) | 1975-10-30 |
| DE2516863B2 true DE2516863B2 (de) | 1977-03-03 |
Family
ID=23845529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752516863 Ceased DE2516863B2 (de) | 1974-04-29 | 1975-04-17 | Verfahren zum umwandeln von abfaellen biegsamer polyurethanschaumstoffe in ein homogenes polyolgemisch |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5329359B2 (OSRAM) |
| CA (1) | CA1042146A (OSRAM) |
| DE (1) | DE2516863B2 (OSRAM) |
| ES (1) | ES436853A1 (OSRAM) |
| FR (1) | FR2268825B1 (OSRAM) |
| GB (1) | GB1492838A (OSRAM) |
| IT (1) | IT1035248B (OSRAM) |
| NL (1) | NL159418B (OSRAM) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2951617A1 (de) * | 1979-12-21 | 1981-07-02 | Prof. Dr.-Ing. Wilhelm 5100 Aachen Schütz | Verfahren und anlage zur aufbereitung von polyurethan |
| EP0105167A1 (de) * | 1982-09-01 | 1984-04-11 | Bayer Ag | Verfahren zum kontinuierlichen glykolytischen Hochtemperatur-Abbau von Polyurethankunststoffabfällen in Schneckenmaschinen |
| EP0247483A3 (de) * | 1986-05-28 | 1988-06-15 | Bayer Ag | Verfahren zur Herstellung von Hydroxyphenylurethanen |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4024601C2 (de) * | 1990-08-02 | 1997-04-03 | Gunter Prof Dr Bauer | Verfahren zur Herstellung polyolhaltiger Dispersionen und deren Verwendung |
| DE4234335A1 (de) | 1992-10-12 | 1994-04-14 | Basf Schwarzheide Gmbh | Verfahren zur Herstellung von Recyclatpolyolen und deren Verwendung bei der Herstellung von Polyurethanen |
| GB9223943D0 (en) * | 1992-11-14 | 1993-01-06 | Caligen Foam Ltd | Re-cycling of polyurethane foam |
| DE4323558C2 (de) * | 1993-07-14 | 2001-02-15 | Gore & Ass | Verfahren zur Isolierung und Wiederverwertung von Textilmaterialien aus polyurethanverklebten Textilverbundlaminaten |
| DE4411864A1 (de) * | 1994-04-08 | 1995-10-12 | Basf Schwarzheide Gmbh | Verfahren zur Herstellung von harten bis zähharten Polyurethanschaumstoffen mit erhöhtem Anteil an offenen Zellen und vermindertem Schrumpf |
| DE4433834C1 (de) | 1994-09-22 | 1995-10-12 | Daimler Benz Ag | Verfahren zur Rückgewinnung von Sekundärpolyolen aus mit nichtglykolysierbaren Stoffen vermischten Polyaddukten von Diolen und Diisocyanaten |
| DE4442379A1 (de) | 1994-11-29 | 1996-05-30 | Bayer Ag | Verfahren zum glykolytischen Abbau von Polyurethankunststoffen |
| JP2011246569A (ja) * | 2010-05-26 | 2011-12-08 | Inoac Corp | リサイクル可能なポリウレタンフォーム、再生ポリオールの製造方法及び再生ポリオールを用いるポリウレタンフォームの製造方法 |
| CN112029148A (zh) * | 2020-08-31 | 2020-12-04 | 浙江工业大学 | 一种使用乳液体系回收废弃聚氨酯泡沫中聚醚多元醇的方法 |
-
1975
- 1975-04-03 CA CA223,810A patent/CA1042146A/en not_active Expired
- 1975-04-07 GB GB1418675A patent/GB1492838A/en not_active Expired
- 1975-04-09 IT IT4901975A patent/IT1035248B/it active
- 1975-04-15 NL NL7504473A patent/NL159418B/xx not_active IP Right Cessation
- 1975-04-17 DE DE19752516863 patent/DE2516863B2/de not_active Ceased
- 1975-04-22 ES ES436853A patent/ES436853A1/es not_active Expired
- 1975-04-28 FR FR7513221A patent/FR2268825B1/fr not_active Expired
- 1975-04-28 JP JP5195875A patent/JPS5329359B2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2951617A1 (de) * | 1979-12-21 | 1981-07-02 | Prof. Dr.-Ing. Wilhelm 5100 Aachen Schütz | Verfahren und anlage zur aufbereitung von polyurethan |
| EP0105167A1 (de) * | 1982-09-01 | 1984-04-11 | Bayer Ag | Verfahren zum kontinuierlichen glykolytischen Hochtemperatur-Abbau von Polyurethankunststoffabfällen in Schneckenmaschinen |
| EP0247483A3 (de) * | 1986-05-28 | 1988-06-15 | Bayer Ag | Verfahren zur Herstellung von Hydroxyphenylurethanen |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7984375A (en) | 1976-10-07 |
| GB1492838A (en) | 1977-11-23 |
| NL7504473A (nl) | 1975-10-31 |
| DE2516863A1 (de) | 1975-10-30 |
| ES436853A1 (es) | 1976-12-01 |
| NL159418B (nl) | 1979-02-15 |
| IT1035248B (it) | 1979-10-20 |
| FR2268825A1 (OSRAM) | 1975-11-21 |
| JPS50149606A (OSRAM) | 1975-11-29 |
| FR2268825B1 (OSRAM) | 1977-07-08 |
| CA1042146A (en) | 1978-11-07 |
| JPS5329359B2 (OSRAM) | 1978-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0592952B1 (de) | Verfahren zur Herstellung von Recyclatpolyolen und deren Verwendung bei der Herstellung von Polyurethanen | |
| DE2238109C3 (de) | Verfahren zum Aufarbeiten von Polyurethanabfällen zu Polyolen | |
| DE2304444C3 (de) | Verfahren zum Aufarbeiten von Polyisocyanuratabfällen | |
| US3983087A (en) | Novel process of reclaiming polyurethane foam | |
| DE1569497B2 (de) | Verfahren zur herstellung von polyurethanschaumstoffen | |
| DE2516863B2 (de) | Verfahren zum umwandeln von abfaellen biegsamer polyurethanschaumstoffe in ein homogenes polyolgemisch | |
| DE3818769A1 (de) | Fluessige polyisocyanatmischungen, ein verfahren zu ihrer herstellung und ihre verwendung zur herstellung von polyurethan-weichschaumstoffen | |
| DE69127500T2 (de) | Allein mit Wasser verschäumte Polyurethanschaumstoffe | |
| EP0007978B1 (de) | Verfahren zur schonenden Aufarbeitung von Abfällen, die aus Umsetzungsprodukten von Isocyanatgruppen enthaltenden organischen Verbindungen mit Alkoholen und/oder Wasser bestehen | |
| DE69327844T2 (de) | Verfahren zur umwandlung von polyurethan-polymer in polyol und daraus hergestelltes neues polyurethan-polymer | |
| DE2534465B2 (de) | Verfahren zur Rückgewinnung von OH-Gruppen enthaltenden Spaltprodukten aus Polyätherpolyurethanschaumstoffen | |
| EP0899292B1 (de) | Verfahren zur Verringerung des Amingehalts von Recyclatpolyolen | |
| DE2139640A1 (de) | Zu haftklebeschichten ausreagierende gemische | |
| DE4416322A1 (de) | Verfahren zur Herstellung von Hydroxylgruppen aufweisenden Verbindungen aus (Polyurethan)Polyharnstoffabfällen | |
| EP0688815B1 (de) | Verfahren zur Herstellung von Hydroxylgruppen aufweisenden Verbindungen aus (Polyurethan) Polyharnstoffabfällen | |
| DE2742510C3 (de) | Verfahren zur Herstellung von Polyurethanschaumstoffen | |
| DE2529823A1 (de) | Vernetzungsmittel fuer polyurethanschaumstoffe | |
| DE1518464A1 (de) | Verfahren zur Herstellung von Polyisocyanatmassen | |
| EP1252216B1 (de) | Aminoorganische substanzen | |
| AT243520B (de) | Verfahren zur Herstellung von Urethangruppen enthaltenden Schaumstoffen | |
| AT244061B (de) | Verfahren zur Herstellung von Urethangruppen enthaltenden Schaumstoffen | |
| DE2542218C2 (de) | Fester Polyurethanschaumstoff und Verfahren zu seiner Herstellung | |
| DE19519333A1 (de) | Verfahren zur Herstellung von Hydroxylgruppen aufweisenden Verbindungen mit geringem Gehalt an primären aromatischen Diaminen aus (Polyurethan)Polyharnstoffabfällen | |
| DE2414091A1 (de) | Verfahren zur herstellung von polyhydroxylverbindungen aus abfaellen von carbodiimidgruppen aufweisenden kunststoffen | |
| DD226575B5 (de) | Verfahren zur stufenweisen umsetzung von polyurethanabfaellen durch kombinierte aminolyse und alkoholyse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8235 | Patent refused |