http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0708124-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d7ce92411f1bce3c8233c4bdfd7b8242 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29B11-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C48-625 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C48-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-0895 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-08 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K75-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29B11-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29B7-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-00 |
| filingDate | 1995-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4efc2594822e59307fe6955ffe000459 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32472b9f81649f709b556910fbcc1d66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e568b2a809e9c685fdccfa4ec0ae6be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52a1116b56193905aeac12f827c2e839 |
| publicationDate | 1996-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0708124-A2 |
| titleOfInvention | Preparation process of thermoplastic polyurethanes |
| abstract | The invention relates to a process for the production of thermoplastic polyurethanes, in which a) organic and / or modified organic polyisocyanates with, b) at least one oligomeric polyhydroxy and / or polyamino compound with an average molecular weight of 400 to 10,000 g / mol, optionally in Presence of c) chain extenders having at least two Zerewitinow-active hydrogen atoms and having an average molecular weight below 400 g / mol, d) catalysts, e) less than difunctional compounds and / or less than difunctional isocyanates compared to isocyanates and, f) auxiliaries and / or additives , in a twin-screw extruder with the same direction of rotation of both shafts and a length / diameter ratio of 20 to 60, and the thermoplastic polyurethane formed is discharged from the extruder with shaping, which is characterized in that at least some of the components a) and b) and the components c) to f), which may also be used, in a first zone (Z1) of the twin-screw extruder, which is equipped with single-screw conveyor elements, which start in a length range from 0 to 3/100 and end at least at 8/100 and at most 30 / 100 of the entire screw length L, are arranged, then the low-viscosity mixture passes through a mixing zone (Z2) with low shear from double-flight screw conveyor elements and / or mixing elements, this mixing zone (Z2) within a length range between 8/100 and 45/100 a total length within this range of 5/100 to 25/100 of the entire screw length L is arranged, after which the product is guided into a storage zone (Z3) with a low shear effect, this storage zone (Z3) within a length range between 20/100 and 50 / 100 with a total length of the barrage within this range from 0.2 / 100 to 10/100 of the total screw length net, then in a polymerization zone (Z4), which is equipped with two-start screw conveyors, carries out the polymerization in the highly viscous range, the zone (Z4) being in a length range between 30/100 and 100/100 of the entire screw length, and that Polyurethane discharges, with the proviso that the process is carried out so that the value E, defined as E = ((M xnx DG <2>) / (V)), where M -: the total torque acting on both extruder shafts in [Nm], n -: the speed of the extruder shafts in [min <-1>], DG-: the smallest inside diameter of the extruder housing in [cm] and; V -: the free available reactor volume between the extruder housing and the screw and possibly other elements as the fill of the extruder shafts in [cm <3>] is greater than 750. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3838533-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021122283-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0931640-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8734609-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021122282-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10590303-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111194307-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009086459-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9931158-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3838396-A1 |
| priorityDate | 1994-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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