IE38767L - Polyurethane elastomers - Google Patents

Polyurethane elastomers

Info

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
Application number
IE740109A
Other versions
IE38767B1 (en
Original Assignee
Bayer Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of IE38767L publication Critical patent/IE38767L/en
Publication of IE38767B1 publication Critical patent/IE38767B1/en

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)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (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]
IE109/74A 1973-01-19 1974-01-18 Process for the production of polyurethane elastomers IE38767B1 (en)

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)

* Cited by examiner, † Cited by third party
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
IT8221688U1 (en) * 1982-04-26 1983-10-26 Pomini Farrel Spa IMPROVED CONTINUOUS MIXING MACHINE FOR PLASTIC MATERIALS, PARTICULARLY FOR POWDERED AND "SPLIT FORM" RUBBER
JPS6296515A (en) * 1985-05-13 1987-05-06 Polyplastics Co Continuous production method for trioxane polymer or copolymer
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
BR112015007855A2 (en) * 2012-10-10 2017-07-04 Basf Se thermoplastic polyurethane-based interception device for moving articles or people, use of a thermoplastic polyurethane, and process for producing interception devices.
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
EP3827048B1 (en) 2018-07-25 2026-04-01 Covestro Deutschland AG Polymer blends containing thermoplastic and crosslinked reaction product comprising the reaction product of polyaddition or polycondensation
EP3887421B1 (en) * 2018-11-29 2023-01-11 Basf Se Continuous production of ppg based tpu
EP4077451A1 (en) 2019-12-17 2022-10-26 Covestro Intellectual Property GmbH & Co. KG Method for adjusting the molecular weight distribution in polycondensations and/or polyadditions
EP3838960A1 (en) 2019-12-17 2021-06-23 Covestro Deutschland AG Method for adjusting molecular weight distribution in polycondensation and / or polyaddition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
AU6447974A (en) 1975-07-17
FR2214719B1 (en) 1977-09-23
DK137134B (en) 1978-01-23
SE412402B (en) 1980-03-03
DE2302564A1 (en) 1974-07-25
NL167980B (en) 1981-09-16
DK137134C (en) 1978-07-03
LU69188A1 (en) 1974-08-19
DD110287A5 (en) 1974-12-12
IE38767B1 (en) 1978-05-24
GB1403693A (en) 1975-08-28
AT332124B (en) 1976-09-10
DE2302564B2 (en) 1978-10-26
IT1002693B (en) 1976-05-20
DE2302564C3 (en) 1985-02-07
JPS49109497A (en) 1974-10-17
CA1026491A (en) 1978-02-14
ES422407A1 (en) 1976-04-16
BE809904A (en) 1974-07-18
JPS565244B2 (en) 1981-02-04
ATA36674A (en) 1975-12-15
NL7400585A (en) 1974-07-23
AU473836B2 (en) 1976-07-01
CH616439A5 (en) 1980-03-31
NL167980C (en) 1985-03-18
FR2214719A1 (en) 1974-08-19
BR7400337D0 (en) 1974-08-22

Similar Documents

Publication Publication Date Title
IE38767B1 (en) Process for the production of polyurethane elastomers
US2969960A (en) Mixing apparatus
GB1478332A (en) Pre-preg materials chemically integral comosite foam structures prepared therefrom and methods of preparation
AU475440B2 (en) Machine for the production of foams or homogeneous materials from liquid reaction components
ZA747297B (en) Process of continuously blending, molding and curing heat curable polymeric compounds, and apparatus therefor
US3712776A (en) Apparatus for the continuous production of glass fiber reinforced thermoplastic
ATE167107T1 (en) EXTRUSION PROCESS AND SYSTEM
GB917731A (en) Method of and apparatus for pumping and/or extruding visco-elastic materials
JPS53106752A (en) Reinforcing material and its composition for molding product
GB1508317A (en) Process for the production of elastomeric polyurethane ureas
CS185635B2 (en) Two,or multiworm extruder for plastification and mixing of plastic materials
US3553777A (en) Device for extruding plastic material
GB1373155A (en) Process and apparatus for the continuous regeneration of rubber and plastics
ES433755A1 (en) Reaction product of 4,4-bis-(hydroxymethyl)-cyclohexene compounds with sulfur
GB1292366A (en) Mixing and plasticating machine and process for operating said machine
FR2225460A1 (en) Vinyl chloride polymer powder compsns - contg liquid and solid additives and prepd without heating
GB1179445A (en) Production of Expanded Olefin Polymer Moldings
GB1399142A (en) Mixing process
FR2182919A1 (en) Plastics mixing appts - with endless screw and rotor with teethed rings rotating inside housing
GB1264493A (en)
NL165474C (en) PROCESS FOR PREPARING LIQUID POLYMER / POLYOL COMPOSITIONS, AND POLYURETHANE PRODUCTS OBTAINED FROM THESE COMPOSITIONS.
GB843514A (en) Mixing and thickening machine for extruding and granulating material
FR2149285A1 (en) Distribution hopper - for pulverulent materials such as flour
GB1015880A (en) High speed dough mixing machine
EP0392860A3 (en) Process and apparatus for preparing thermoplastic resin compositions