IE41241L - Production of polyurethane ureas in two-shaft screw¹extruders - Google Patents
Production of polyurethane ureas in two-shaft screw¹extrudersInfo
- Publication number
- IE41241L IE41241L IE108875A IE108875A IE41241L IE 41241 L IE41241 L IE 41241L IE 108875 A IE108875 A IE 108875A IE 108875 A IE108875 A IE 108875A IE 41241 L IE41241 L IE 41241L
- Authority
- IE
- Ireland
- Prior art keywords
- extruder
- kneading
- prepolymer
- reaction mixture
- polyurethane ureas
- 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
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
-
- 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
Abstract
1508317 Elastomeric polyurethane ureas BAYER AG 13 May 1975 [16 May 1974] 20082/75 Heading C3R Elastomeric polyurethane ureas are prepared by reacting a diisocyanate a polyhydroxyl compound of M.W. from 500 to 10,000 and an aliphatic, cycloaliphatic and/or araliphatic primary and/or secondary diamine or hydrazine or acid hydrazide in a self-cleaning two-shaft screw extruder with both the shafts rotating in the same sense at a temperature of 110 to 280 C. and at a viscosity range during the reaction in the extruder of 0 1 to 3000 poises, such that, when the reaction mixture is very sticky and has a viscosity of 100 to 1000 poises, is is passed through a zone of the screw which is situated near to the inlet zone for the reaction mixture and which contains vigorously mixing kneading elements with kneading frequencies of 1 to 20 Hertz and in which there is a velocity gradient in the radial clearance between the screw comb and housing wall of more than 2000 sec.<-1>. It is preferred to form a prepolymer from the diisocyanate and polyhydroxy compound and to feed this prepolymer and the diamine separately to the extruder. The kneading elements preferably comprise a series of prismatic discs of various geometrical shapes. After the critical kneading step, the reaction mixture may be subjected to further kneading steps before forming thereof. In a typical example, a linear polyester is reacted with 1- isocyanato - 3 - isocyanatomethyl - 3,5,5 - trimethyl cyclohexane to form a prepolymer which is reacted in an extruder with 1-amino-3- aminomethyl-3,5,5-trimethyl cyclohexane.
[GB1508317A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742423764 DE2423764C3 (en) | 1974-05-16 | 1974-05-16 | Process for the continuous production of elastomeric polyurethane ureas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE41241L true IE41241L (en) | 1975-11-16 |
| IE41241B1 IE41241B1 (en) | 1979-11-21 |
Family
ID=5915715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE108875A IE41241B1 (en) | 1974-05-16 | 1975-05-15 | Process for the production of elastomeric polyurethane ureas |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5546408B2 (en) |
| BE (1) | BE829120A (en) |
| CA (1) | CA1063291A (en) |
| DE (1) | DE2423764C3 (en) |
| DK (1) | DK214175A (en) |
| ES (1) | ES437684A1 (en) |
| FR (1) | FR2271247B1 (en) |
| GB (1) | GB1508317A (en) |
| IE (1) | IE41241B1 (en) |
| IT (1) | IT1035720B (en) |
| LU (1) | LU72469A1 (en) |
| NL (1) | NL170743C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE2854386A1 (en) | 1978-12-16 | 1980-07-03 | Bayer Ag | METHOD FOR PRODUCING THERMOPLASTIC CHEMICAL MATERIALS |
| DE2925944A1 (en) | 1979-06-27 | 1981-01-22 | Bayer Ag | METHOD FOR PRODUCING POLYURETHANE UREAS |
| DE3015576A1 (en) * | 1980-04-23 | 1981-10-29 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING ISOCYANATE POLYADDITION PRODUCTS AND THE USE THEREOF AS A THERMOPLASTIC PRESSING MATERIAL OR AS A REACTIVE FILLER, ESPECIALLY IN A METHOD FOR THE PRODUCTION OF POLYURETHANE PLASTICS |
| JPS6359531A (en) * | 1986-08-29 | 1988-03-15 | 花王株式会社 | Manufacture of polyurethane laminate |
| DE4202973A1 (en) * | 1992-02-03 | 1993-08-05 | Bayer Ag | METHOD FOR THE CONTINUOUS PRODUCTION OF POLYURETHANE AND POLYURETHANE URBAN ELASTOMERS |
| DE4428458A1 (en) * | 1994-08-11 | 1996-02-15 | Bayer Ag | Cycloaliphatic thermoplastic polyurethane elastomers |
| DE4437586A1 (en) | 1994-10-20 | 1996-04-25 | Basf Schwarzheide Gmbh | Process for the preparation of thermoplastic polyurethanes |
| DE59905379D1 (en) * | 1998-01-23 | 2003-06-12 | Kloeckner Desma Schuhmaschinen | Use of a device for shot-wise mixing and dispensing of in the cavity of a mold of an injection molding ausreagierenden and curing multi-component plastics |
| DE10221047A1 (en) | 2002-05-10 | 2003-11-27 | Degussa | Process for the solvent-free, continuous production of polyureas |
| DE102005004967A1 (en) * | 2005-02-03 | 2006-08-10 | Basf Ag | Process for the continuous production of thermoplastically processable polyurethane elastomers |
| WO2013030148A1 (en) | 2011-08-29 | 2013-03-07 | Bayer Intellectual Property Gmbh | Hydrophilic thermoplastic polyurethanes and use thereof in medical equipment |
| WO2013083511A1 (en) | 2011-12-06 | 2013-06-13 | Bayer Intellectual Property Gmbh | Tcd alcohol-based thermoplastic polyurethane urea polymers, and the use of same |
| WO2017177057A1 (en) | 2016-04-06 | 2017-10-12 | Zzyzx Polymers LLC | Processable polymers and methods of making and using |
-
1974
- 1974-05-16 DE DE19742423764 patent/DE2423764C3/en not_active Expired
-
1975
- 1975-05-09 CA CA226,589A patent/CA1063291A/en not_active Expired
- 1975-05-13 GB GB2008275A patent/GB1508317A/en not_active Expired
- 1975-05-14 LU LU72469A patent/LU72469A1/xx unknown
- 1975-05-14 ES ES437684A patent/ES437684A1/en not_active Expired
- 1975-05-14 IT IT4958675A patent/IT1035720B/en active
- 1975-05-15 BE BE156388A patent/BE829120A/en not_active IP Right Cessation
- 1975-05-15 NL NL7505741A patent/NL170743C/en not_active IP Right Cessation
- 1975-05-15 IE IE108875A patent/IE41241B1/en unknown
- 1975-05-15 DK DK214175A patent/DK214175A/en unknown
- 1975-05-16 JP JP5755775A patent/JPS5546408B2/ja not_active Expired
- 1975-05-16 FR FR7515489A patent/FR2271247B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IE41241B1 (en) | 1979-11-21 |
| JPS5546408B2 (en) | 1980-11-22 |
| FR2271247B1 (en) | 1980-02-08 |
| NL170743C (en) | 1982-12-16 |
| DK214175A (en) | 1975-11-17 |
| ES437684A1 (en) | 1977-02-01 |
| CA1063291A (en) | 1979-09-25 |
| FR2271247A1 (en) | 1975-12-12 |
| DE2423764C3 (en) | 1979-10-18 |
| IT1035720B (en) | 1979-10-20 |
| BE829120A (en) | 1975-11-17 |
| LU72469A1 (en) | 1976-03-17 |
| GB1508317A (en) | 1978-04-19 |
| DE2423764A1 (en) | 1975-11-27 |
| NL7505741A (en) | 1975-11-18 |
| NL170743B (en) | 1982-07-16 |
| DE2423764B2 (en) | 1979-02-22 |
| JPS50159590A (en) | 1975-12-24 |
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