IE38767L - Polyurethane elastomers - Google Patents
Polyurethane elastomersInfo
- Publication number
- IE38767L IE38767L IE740109A IE10974A IE38767L IE 38767 L IE38767 L IE 38767L IE 740109 A IE740109 A IE 740109A IE 10974 A IE10974 A IE 10974A IE 38767 L IE38767 L IE 38767L
- Authority
- IE
- Ireland
- Prior art keywords
- molecular weight
- screw
- end product
- polyurethane elastomers
- kneading
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0895—Manufacture of polymers by continuous processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/94—Lubricating
- B29C48/95—Lubricating by adding lubricant to the moulding material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyurethanes Or Polyureas (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Polyurethane elastomers made from diisocyanates, polyhydroxyl compounds (molecular weight 800-3500), glycols (molecular weight up to 300) and optionally triols (molecular weight up to 500) are produced in screw machines in the presence of lubricants. Self-cleaning, twin-screw machines with corotating screw shafts are used. In one screw zone therein, in which the kneading elements mix vigorously (kneading frequency up to 15 Hz), the critical reaction phase, in which the reaction mixture is highly tacky and has a viscosity of between 20 and 70 Pa.s, is passed through at a velocity gradient in the radial play between the comb and the housing wall of greater than 2000 s<-1>. The consequence of this is a homogeneous knot-free end product. The process enables the thermoplastic end product to be extruded directly with shaping.
[GB1403693A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2302564A DE2302564C3 (en) | 1973-01-19 | 1973-01-19 | Process for the production of polyurethane elastomers |
Publications (2)
Publication Number | Publication Date |
---|---|
IE38767L true IE38767L (en) | 1974-07-19 |
IE38767B1 IE38767B1 (en) | 1978-05-24 |
Family
ID=5869412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE109/74A IE38767B1 (en) | 1973-01-19 | 1974-01-18 | Process for the production of polyurethane elastomers |
Country Status (18)
Country | Link |
---|---|
JP (1) | JPS565244B2 (en) |
AT (1) | AT332124B (en) |
AU (1) | AU473836B2 (en) |
BE (1) | BE809904A (en) |
BR (1) | BR7400337D0 (en) |
CA (1) | CA1026491A (en) |
CH (1) | CH616439A5 (en) |
DD (1) | DD110287A5 (en) |
DE (1) | DE2302564C3 (en) |
DK (1) | DK137134C (en) |
ES (1) | ES422407A1 (en) |
FR (1) | FR2214719B1 (en) |
GB (1) | GB1403693A (en) |
IE (1) | IE38767B1 (en) |
IT (1) | IT1002693B (en) |
LU (1) | LU69188A1 (en) |
NL (1) | NL167980C (en) |
SE (1) | SE412402B (en) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2549372C2 (en) * | 1975-11-04 | 1984-08-09 | Bayer Ag, 5090 Leverkusen | Process for the continuous production of polyurethane elastomers |
DE2610980B2 (en) * | 1976-03-16 | 1978-01-12 | Basf Ag, 6700 Ludwigshafen | PROCESS FOR THE CONTINUOUS MANUFACTURING OF THERMOPLASTIC POLYURETHANE ELASTOMERS |
DE2842806A1 (en) * | 1978-09-30 | 1980-04-10 | Bayer Ag | METHOD FOR PRODUCING POLYURETHANE ELASTOMERS |
DE2925944A1 (en) | 1979-06-27 | 1981-01-22 | Bayer Ag | METHOD FOR PRODUCING POLYURETHANE UREAS |
IT1132527B (en) * | 1979-07-13 | 1986-07-02 | Buss Ag | PROCEDURE AND DEVICE FOR THE CONTINUOUS PRODUCTION OF POLYURETHANE |
US4409167A (en) * | 1981-01-13 | 1983-10-11 | E. I. Du Pont De Nemours & Co, | Process for extruding a modified high molecular weight poly(ethylene terephthalate) resin |
JPS5890442U (en) * | 1981-12-11 | 1983-06-18 | 富士電機株式会社 | reading device |
IT8221688V0 (en) * | 1982-04-26 | 1982-04-26 | Pomini Farrel Spa | CONTINUOUS MIXING MACHINE PERFECTED FOR PLASTIC MATERIALS, AND IN PARTICULAR FOR RUBBER POWDER AND "IN DIVIDED FORM". |
JPS6296515A (en) * | 1985-05-13 | 1987-05-06 | Polyplastics Co | Continuous production of polymer of copolymer of trioxane |
DE3831706A1 (en) * | 1988-09-17 | 1990-03-22 | Bayer Ag | MEMBRANE FOR SPEAKERS |
GB2229131A (en) * | 1989-03-17 | 1990-09-19 | Vactite Ltd | Coating electric conductors |
US5158725A (en) * | 1991-04-29 | 1992-10-27 | The Goodyear Tire & Rubber Company | Continuous mixing of elastomeric compounds |
JP2878841B2 (en) * | 1991-07-03 | 1999-04-05 | 鐘紡株式会社 | Thermoplastic polyurethane elastic body, method for producing the same, and elastic fiber comprising the same |
DE4426943A1 (en) | 1994-07-29 | 1996-02-01 | Bayer Ag | Polyurethane molding compounds |
DE4437586A1 (en) | 1994-10-20 | 1996-04-25 | Basf Schwarzheide Gmbh | Process for the preparation of thermoplastic polyurethanes |
DE19520730A1 (en) * | 1995-06-07 | 1996-12-12 | Bayer Ag | Thermoplastic polyurethane urea elastomers |
DE19823393A1 (en) | 1998-05-26 | 1999-12-02 | Basf Ag | Prepolymers containing isocyanate groups and process for their preparation |
GB0019074D0 (en) * | 2000-08-03 | 2000-09-27 | Ranier Ltd | Precision polyurethane manufacture |
DE10138298A1 (en) | 2001-08-10 | 2003-02-27 | Basf Ag | Thermoplastic polyurethanes |
DE102005004967A1 (en) * | 2005-02-03 | 2006-08-10 | Basf Ag | Process for the continuous production of thermoplastically processable polyurethane elastomers |
DE102005008260A1 (en) | 2005-02-22 | 2006-08-24 | Basf Ag | Article comprising polyurethane and polystyrene, useful e.g. as sealed coverings and housings, free of chemical adhesive, bonded by plasma treatment of the polystyrene surface |
DE102005039933B4 (en) | 2005-08-24 | 2007-12-27 | Bayer Materialscience Ag | Process for the preparation of thermoplastically processable polyurethanes |
DE102008023252A1 (en) | 2008-05-13 | 2009-11-19 | Tesa Se | Hotmelt process for producing a chemically crosslinked polyurethane film |
DE102009046657A1 (en) | 2009-11-12 | 2011-05-19 | Tesa Se | Pressure-sensitive adhesive based on polyurethane |
ES2596244T3 (en) * | 2012-10-10 | 2017-01-05 | Basf Se | Thermoplastic polyurethane interception device |
GB201309458D0 (en) * | 2013-05-27 | 2013-07-10 | Queens University Of The Belfast | Process for the Preparation of a Metal-Organic Compound |
DE102013021027A1 (en) | 2013-12-17 | 2015-06-18 | Carl Freudenberg Kg | Thermoplastic polyurethane for sealing applications |
WO2020020814A1 (en) | 2018-07-25 | 2020-01-30 | Covestro Deutschland Ag | Polymer blends containing thermoplastic and cross-linked reaction product from polyaddition or polycondensation |
JP7431828B2 (en) * | 2018-11-29 | 2024-02-15 | ビーエーエスエフ ソシエタス・ヨーロピア | Serial production of TPU based on PPG |
EP3838960A1 (en) | 2019-12-17 | 2021-06-23 | Covestro Deutschland AG | Method for adjusting molecular weight distribution in polycondensation and / or polyaddition |
CN114746466A (en) | 2019-12-17 | 2022-07-12 | 科思创知识产权两合公司 | Method for adjusting molecular weight distribution in polycondensation and/or polyaddition |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB856708A (en) * | 1958-10-09 | 1960-12-21 | Union Carbide Corp | Method and apparatus for mixing materials forming viscous masses |
BE759829A (en) * | 1969-12-03 | 1971-06-03 | Upjohn Co | PREPARATION OF POLYURETHANES |
DE1964834A1 (en) * | 1969-12-24 | 1971-07-01 | Bayer Ag | Polyurethane elastomers mfr by direct reac - tion in extruder |
-
1973
- 1973-01-19 DE DE2302564A patent/DE2302564C3/en not_active Expired
-
1974
- 1974-01-14 AU AU64479/74A patent/AU473836B2/en not_active Expired
- 1974-01-14 CA CA190,069A patent/CA1026491A/en not_active Expired
- 1974-01-16 GB GB199674A patent/GB1403693A/en not_active Expired
- 1974-01-16 IT IT47746/74A patent/IT1002693B/en active
- 1974-01-16 NL NLAANVRAGE7400585,A patent/NL167980C/en not_active IP Right Cessation
- 1974-01-17 SE SE7400617A patent/SE412402B/en unknown
- 1974-01-17 BR BR74337A patent/BR7400337D0/en unknown
- 1974-01-17 DD DD176056A patent/DD110287A5/xx unknown
- 1974-01-17 LU LU69188A patent/LU69188A1/xx unknown
- 1974-01-17 AT AT36674*#A patent/AT332124B/en not_active IP Right Cessation
- 1974-01-18 ES ES422407A patent/ES422407A1/en not_active Expired
- 1974-01-18 BE BE139949A patent/BE809904A/en unknown
- 1974-01-18 DK DK29474A patent/DK137134C/en active
- 1974-01-18 IE IE109/74A patent/IE38767B1/en unknown
- 1974-01-18 CH CH73074A patent/CH616439A5/en not_active IP Right Cessation
- 1974-01-18 FR FR7401683A patent/FR2214719B1/fr not_active Expired
- 1974-01-18 JP JP796474A patent/JPS565244B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU473836B2 (en) | 1976-07-01 |
AT332124B (en) | 1976-09-10 |
SE412402B (en) | 1980-03-03 |
DE2302564C3 (en) | 1985-02-07 |
NL167980B (en) | 1981-09-16 |
CH616439A5 (en) | 1980-03-31 |
GB1403693A (en) | 1975-08-28 |
AU6447974A (en) | 1975-07-17 |
JPS565244B2 (en) | 1981-02-04 |
NL7400585A (en) | 1974-07-23 |
DD110287A5 (en) | 1974-12-12 |
FR2214719B1 (en) | 1977-09-23 |
CA1026491A (en) | 1978-02-14 |
IT1002693B (en) | 1976-05-20 |
DK137134B (en) | 1978-01-23 |
FR2214719A1 (en) | 1974-08-19 |
IE38767B1 (en) | 1978-05-24 |
DE2302564B2 (en) | 1978-10-26 |
DE2302564A1 (en) | 1974-07-25 |
LU69188A1 (en) | 1974-08-19 |
DK137134C (en) | 1978-07-03 |
BE809904A (en) | 1974-07-18 |
JPS49109497A (en) | 1974-10-17 |
BR7400337D0 (en) | 1974-08-22 |
NL167980C (en) | 1985-03-18 |
ATA36674A (en) | 1975-12-15 |
ES422407A1 (en) | 1976-04-16 |
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