CA1016955A - Low pressure hydrolysis of polyurethane foam and recovery of products - Google Patents
Low pressure hydrolysis of polyurethane foam and recovery of productsInfo
- Publication number
- CA1016955A CA1016955A CA181,365A CA181365A CA1016955A CA 1016955 A CA1016955 A CA 1016955A CA 181365 A CA181365 A CA 181365A CA 1016955 A CA1016955 A CA 1016955A
- Authority
- CA
- Canada
- Prior art keywords
- recovery
- products
- low pressure
- polyurethane foam
- pressure hydrolysis
- 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
- C08J11/14—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)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31597972A | 1972-12-18 | 1972-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1016955A true CA1016955A (en) | 1977-09-06 |
Family
ID=23226942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA181,365A Expired CA1016955A (en) | 1972-12-18 | 1973-09-18 | Low pressure hydrolysis of polyurethane foam and recovery of products |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4990377A (en) |
CA (1) | CA1016955A (en) |
DE (1) | DE2362921A1 (en) |
FR (1) | FR2210493B1 (en) |
GB (1) | GB1455454A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2442387C3 (en) * | 1974-09-04 | 1981-09-10 | Bayer Ag, 5090 Leverkusen | Process for the continuous hydrolytic breakdown of hydrolyzable plastic waste |
GB1602676A (en) * | 1977-07-18 | 1981-11-11 | Ford Motor Co | Hydrolysis of polyurethane foams |
GB1601787A (en) * | 1977-08-22 | 1981-11-04 | Ford Motor Co | Hydrolytic decomposition method and apparatus |
US4281197A (en) * | 1979-06-18 | 1981-07-28 | Ford Motor Company | Hydrolytic decomposition method |
DE3033330A1 (en) | 1980-09-04 | 1982-04-29 | Bayer Ag, 5090 Leverkusen | METHOD FOR THE PRODUCTION OF LIQUID MIXTURES OF COMPOUNDS CONTAINING ISOCYANATE GROUPS, AND THEIR USE AS A BUILDING COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS |
DE4323558C2 (en) * | 1993-07-14 | 2001-02-15 | Gore & Ass | Process for the isolation and recycling of textile materials from polyurethane-bonded textile laminates |
DE69828498T2 (en) | 1997-02-05 | 2006-01-19 | Kabushiki Kaisha Kobe Seiko Sho, Kobe | APPARATUS AND METHOD FOR HYDROLYSIS AND RECYCLING OF ISOCYANATE COMPOUNDS |
EP4363479A1 (en) * | 2021-07-02 | 2024-05-08 | Evonik Operations GmbH | Recovering di- and/or polyisocyanates from pu-depolymerisation processes |
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 CA181,365A patent/CA1016955A/en not_active Expired
- 1973-11-13 GB GB5271273A patent/GB1455454A/en not_active Expired
- 1973-12-11 FR FR7344218A patent/FR2210493B1/fr not_active Expired
- 1973-12-18 DE DE2362921A patent/DE2362921A1/en active Pending
- 1973-12-18 JP JP14041673A patent/JPS4990377A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4990377A (en) | 1974-08-29 |
GB1455454A (en) | 1976-11-10 |
DE2362921A1 (en) | 1974-07-11 |
FR2210493A1 (en) | 1974-07-12 |
FR2210493B1 (en) | 1976-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU443696B2 (en) | Skin urethane foam | |
CA1012698A (en) | Structural foam body and process therefor | |
CA997908A (en) | Recovery of thermoplastic foam | |
CA1016955A (en) | Low pressure hydrolysis of polyurethane foam and recovery of products | |
CA1016956A (en) | Method for continuous hydrolysis of polyurethane foam in restricted tubular reaction zone and recovery of products therefrom | |
CA994500A (en) | Modified flexible polyetherurethane foams | |
AU5743873A (en) | Production of polyurethane foams | |
AU469254B2 (en) | Preparation of polyurethane foams | |
AU470033B2 (en) | Polyurethane foams | |
CA1018537A (en) | Method for continuous hydrolysis of polyurethane foam in fluidized bed and recovery of products therefrom | |
AU469999B2 (en) | Objects made of polyurethane foams withan integral skin | |
CA1005600A (en) | Rigid and semirigid foams and process of making them | |
AU470435B2 (en) | Polyurethane foams | |
CA1016700A (en) | Polyurethane foams and method of making same | |
AU474092B2 (en) | Improvements in or relating tothe production of foams | |
CA840474A (en) | Polyurethane foam product and process | |
CA893735A (en) | Polyurethane products and processes | |
CA857936A (en) | Production of weldable polyether and polyester foams | |
CA875069A (en) | Method of making a polyurethane foam having an integral skin and said foam | |
CA1013491A (en) | Preparation and formulation of polyurethane foams | |
CA896588A (en) | Polyurethane and adhesive solution of a polyurethane | |
CA839336A (en) | Production of tight flexible urethane foam | |
CA864042A (en) | Polyurethane foams and process of making them | |
CA866235A (en) | Extended flexible foamed polyether polyurethane and process thereof | |
CA881513A (en) | Starch-phosphorus-based polyhydroxy-polyethers and polyurethane foams prepared therefrom |