公开(公告)号：DE2300111A1

公开(公告)日：1974-07-11

申请号：DE2300111

申请日：1973-01-03

Applicant: BASF AG

Inventor： HEIL EDUARD DIPL ING ,  KUCHNER KARL DR ,  SLIWKA WOLFGANG DR ,  SMITS HARALD DR

IPC: B01J19/00 ,  C08F10/00 ,  C08F15/00

公开(公告)号：DE2455757A1

公开(公告)日：1976-06-10

申请号：DE2455757

申请日：1974-11-26

Applicant: BASF AG

Inventor： HEIL EDUARD DIPL ING ,  SMITS HARALD DIPL ING DR

IPC: B29B9/06 ,  B29B1/02

Abstract: A thermoplastic mass is granulated by extruding it through a nozzle plate into the chamber pressurised by gas and filled with fine droplets of fluid, of a water-ring cutter. On emerging from the nozzles, the thermoplastic is sheared off by cooled, rotating knives, the particles being superficially chilled, projected centrifugally into the ring of fluid set up on the inner wall of the chamber, and washed out by it. Unwanted cooling of the extrusion head is prevented by the continuous circulation across its face of a stream of gas picked up by the revolving knives and rid by centrifugal force, by any droplets of fluid. There is no adhesion between the granules or linkage by filaments. Excessive wear on knives and extrusion plate is avoided.

公开(公告)号：DE3324338A1

公开(公告)日：1985-01-17

申请号：DE3324338

申请日：1983-07-06

Applicant: BASF AG

Inventor： BERGER ROSEMARIE DIPL ING ,  DREHER HERMANN DR ,  REFFERT RUDI WILHELM DIPL ING ,  HAMBRECHT JUERGEN DR ,  HEIL EDUARD DIPL ING ,  SWOBODA JOHANN DR ,  ECHTE ADOLF DR ,  SIEBEL HANS-PETER DR

IPC: C08G65/46 ,  C08G65/44

Abstract: The catalyst is removed in the preparation of high molecular weight polyphenylene ethers from monohydric phenols, which are alkyl-substituted at the two ortho-positions but not at the para-position and may or may not be alkyl-substituted at the meta-position, by an oxidative coupling reaction with oxygen at from 15 DEG to 50 DEG C. in the presence of a catalyst complex obtained from a copper salt and an organic amine, in the presence of from 1 to 20 parts by weight of a solvent per part by weight of the monomeric phenol, and in the presence or absence of an activator, and removal of the metal component of the catalyst from the polyphenylene ether solution with a complex-forming or chelate-forming compound in aqueous solution, in the presence or absence of reducing and stabilizing substances and assistants for accelerating the interphase reactions and for phase separation, by a method in which the continuous removal of the copper catalyst is carried out in one or more mixer-settler stages at a phase volume ratio of the organic phase to the aqueous phase of from 1:0.1 to 1:1.0, preferably from 1:0.4 to 1:0.6.

公开(公告)号：DE3131440A1

公开(公告)日：1983-02-24

申请号：DE3131440

申请日：1981-08-07

Applicant: BASF AG

Inventor： HINSELMANN KLAUS DIPL ING ,  NAARMANN HERBERT DIPL CHEM DR ,  ECHTE ADOLF DIPL CHEM DR ,  HEIL EDUARD DIPL ING ,  NIKLES ALBERT DIPL ING ,  REFFERT RUDI WILHELM DIPL ING ,  HAMBRECHT JUERGEN DIPL CHEM DR

IPC: C08L7/00 ,  B29C35/00 ,  B29C45/00 ,  C08G65/46 ,  C08J3/00 ,  C08J3/20 ,  C08L21/00 ,  C08L23/00 ,  C08L33/00 ,  C08L33/02 ,  C08L71/00 ,  C08L71/12 ,  C08L101/00 ,  C08L71/04 ,  B01D1/26

Abstract: Molding materials containing high molecular weight polyphenylene ethers are produced by a process in which a solution of a polyphenylene ether in an organic solvent, together with another polymer, is freed of solvent by multi-stage evaporation. The solvent is preferably an aromatic compound from the class comprising the hydrocarbons, halohydrocarbons, ethers or esters, the ratio of the other polymer to the polyphenylene ether is advantageously from 99:1 to 20:80 parts by weight, the other polymer is, in particular, a homopolymer or copolymer of styrene or of a homolog thereof, which may be modified with rubber, and the multi-stage evaporation process preferably comprises not less than two and not more than four working up stages. The evaporation is carried out in general at from 120 DEG to 280 DEG C. and under a pressure of from 1 to 3,000 mbar, advantageously in the presence of assistants which reduce the partial pressure, eg. water and/or methanol.

公开(公告)号：DE2638126A1

公开(公告)日：1978-03-16

申请号：DE2638126

申请日：1976-08-25

Applicant: BASF AG

Inventor： HEIL EDUARD DIPL ING ,  ZETTLER HANS DIETER DIPL ING

IPC: B29B9/06 ,  B29B1/02

Abstract: Granulator for thermoplastics has a die plate, a cutter mount upstream of the die plate carrying cutters, and a drive shaft on which the rotary cutter mount is axially displaceably mounted. The cutter mount is fastened on a multi-component casing defining a press. chamber, and can be moved against the die plate by the press. exerted by liq. or gaseous media in the press. chamber. The component of the casing moving together with the ctter mount is guided, upon the driven shaft, by ball-and-socket joints and a ball box. Accurate and reproducible setting of the press. exerted by the cutter mount against the die plate is rapidly and easily effected, even by relatively unskilled operators.

公开(公告)号：DE2315114A1

公开(公告)日：1974-10-10

申请号：DE2315114

申请日：1973-03-27

Applicant: BASF AG

Inventor： THOMA RICHARD DIPL ING DR ,  REBHAN JOERG DIPL ING ,  BOLTE HERBERT DIPL CHEM DR ,  HEIL EDUARD DIPL ING ,  FISCHER HERMANN DIPL CHEM DR ,  MATTHIAS KLAUS DIPL ING DR

IPC: B01F23/47 ,  C08J3/22 ,  B01F3/10

Abstract: 1455663 Mixing liquids BASF AG 26 March 1974 [27 March 1973] 13255/74 Heading B1C In a process for mixing two liquids having a viscosity difference of at least two powers of 10 in terms of poise, a portion of the high viscosity liquid is. mixed with low-viscosity liquid in a dynamic mixer to form a premix having a viscosity less than two powers of 10 bellow that of the higher viscosity liquid, and the premix mixed with the remainder of the high viscosity material in a static mixer. Preferably the mixing of the premix in the dynamic mixer is carried out at a sheer rate of at least 0.1 sec -1 to form a premix containing not more than 60% by weight of the low viscosity material, and the mixing in the static mixer is carried out at a sheer rate of not more than 10 4 sec -1 . In an apparatus the high viscosity liquid 1 is branched off through a line 4 and metering pump 5 to a junction 6 where it is joined by low viscosity liquid metered by a pump 8. The premix so formed is mixed in a toothed disc mixer 12 and fed to the main high viscosity stream at 17, the total stream being subdivided into partial streams which are displaced and recombined in a static homogenizer 20. In modifications a second high viscosity material 3 .may be added to the branch line 4 of the first, and a third high viscosity liquid material 14 with or without solids content to the junction 6 or to the premix at 18; further low viscosity material may be added to the main stream of the mixture at 19 or through a line 10 to the static homogenizer 20. The invention may be used for mixing lubricants, expanding agents, stabilizers and plasticizers with molten polymers; examples relate to nylon 6 and the mixing of a paraffin oil with polystyrene.