公开(公告)号：DE2700608A1

公开(公告)日：1978-07-20

申请号：DE2700608

申请日：1977-01-08

Applicant: BASF AG

Inventor： BRETTSCHNEIDER HELMUT ING GRAD ,  MATTHIAS KLAUS DIPL ING DR ,  MAHNKE HARALD DIPL CHEM DR ,  TRAUTZ VOLKER DIPL CHEM DR ,  WEBER HEINZ DIPL CHEM DR

IPC: B32B7/02 ,  C04B26/10 ,  E04C2/24

Abstract: Non-combustible composite insulating materials consist of a core layer with low density and, applied on both sides, cover layers with high density and high mechanical strength. The heat-insulating core layer contains inorganic lightweight particles and the cover layers contain inorganic or organic fibres which in each case are bonded by heat-resistant organic binders. The insulating materials can be used as construction elements.

公开(公告)号：DE3143071A1

公开(公告)日：1983-05-11

申请号：DE3143071

申请日：1981-10-30

Applicant: BASF AG

Inventor： MEINELT WERNER ING GRAD ,  MATTHIAS KLAUS DIPL ING DR ,  FRANZMANN GERNOT DIPL CHEM DR ,  PETRI ROLF DIPL ING ,  KRAUS FRIEDRICH DIPL CHEM DR

IPC: C08L101/00 ,  C04B16/04 ,  C08F6/00 ,  C08J3/05 ,  C08J3/12 ,  C08L1/00 ,  C08L23/00 ,  C08L27/00 ,  C08L31/00 ,  C08L31/04 ,  C08L33/00 ,  C08L33/02 ,  C08L61/00 ,  C08L61/34 ,  C04B7/35 ,  C04B13/24 ,  C04B25/02 ,  C08L39/06 ,  C09J7/02

Abstract: The invention relates to a process for the preparation of blocking-resistant, water-dispersible polymer powders by spraying the aqueous polymer dispersions which contain an additive of a water-soluble copolymer comprising from 20 to 70% by weight of vinylpyrrolidone and from 30 to 80% by weight of vinyl acetate, and to the use thereof as additives for hydraulic binders.

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.

公开(公告)号：DE3143070A1

公开(公告)日：1983-05-11

申请号：DE3143070

申请日：1981-10-30

Applicant: BASF AG

Inventor： MEINELT WERNER ING GRAD ,  MATTHIAS KLAUS DIPL ING DR ,  FRANZMANN GERNOT DIPL CHEM DR ,  PETRI ROLF DIPL ING ,  KRAUS FRIEDRICH DIPL CHEM DR

IPC: C08J3/05 ,  C08J3/12 ,  C04B7/35 ,  C04B13/24 ,  C04B25/02 ,  C08L61/18 ,  C09J7/02

Abstract: The invention relates to a process for the preparation of blocking-resistant, water-dispersible polymer powders by spraying aqueous polymer dispersions which contain an addition of water-soluble alkali metal salts and alkaline earth metal salts of naphthalenesulphonic acid/formaldehyde condensation products, and to the use thereof as additives for hydraulic binders.

公开(公告)号：DE2740672A1

公开(公告)日：1979-03-22

申请号：DE2740672

申请日：1977-09-09

Applicant: BASF AG

Inventor： HEINZ GERHARD DIPL CHEM DR ,  DIKOW HERMANN DIPL CHEM DR ,  JARRE WOLFGANG DIPL CHEM DR ,  NISSEN DIETMAR DIPL CHEM DR ,  MATTHIAS KLAUS DIPL ING DR ,  KAEPPEL HANSHELMUT ING GRAD

IPC: C08G18/08 ,  C08G18/62 ,  C08G18/63 ,  C08J3/09 ,  C08J9/00 ,  C08F6/24

Abstract: A process for the manufacture of partially dehydrated organic polymer polyol dispersions from the reaction of polyhydroxyl compounds and aqueous polymer dispersions wherein the problem of excessive viscosity is overcome by mixing the reactants with a recycled partially dehydrated polyol polymer dispersion, removing water from the reaction mixture, removing a portion of the partially dehydrated polyol polymer dispersion, and recycling the remainder.