公开(公告)号：DE3134715A1

公开(公告)日：1983-08-11

申请号：DE3134715

申请日：1981-09-02

Applicant: BASF AG

Inventor： BUEHRLE HANS ,  LINDNER EDMUND DIPL ING ,  LOHRBAECHER VOLKER ING GRAD ,  PIRKER ALFRED DIPL ING ,  STRICKLE ERICH ING GRAD

IPC: F16F7/00 ,  B60R19/02 ,  B60R19/18 ,  B60R19/30 ,  F16S3/00

公开(公告)号：DE2452329A1

公开(公告)日：1976-05-06

申请号：DE2452329

申请日：1974-11-05

Applicant: BASF AG

Inventor： HILT ALBRECHT DIPL CHEM DR ,  SEYDL WOLFGANG DIPL CHEM DR ,  STRICKLE ERICH ING GRAD

IPC: C08L67/02 ,  F16C33/20 ,  C08J5/16

Abstract: Low friction matls. comprise (a) 75-99 pts. wt. polybutylene terephthalate (I) of relative viscosity 1.3-1.8 measured in 0.5% soln. in a 3:2 phenol/o-dichlorobenzene mixt. at 25 degrees C, and (b) 25-1 pts. wt. polytetrafluoroethylene (II) distributed in (I) as discrete particles of ave. dia. 150-800 (pref. 200-500) mu m. (I) alone is unsuitable for sliding elements such as bearings, gears, sealing strips, couplings, rollers, etc., since it abrades excessively against steel and suffers from a stick-slip effect. Introdn. of (II) as discrete particles in (I) overcomes this defect.

公开(公告)号：DE2459162A1

公开(公告)日：1976-06-24

申请号：DE2459162

申请日：1974-12-14

Applicant: BASF AG

Inventor： MOORWESSEL DIETER DIPL CHEM DR ,  SCHOENE WERNER DIPL CHEM DR ,  STRICKLE ERICH ING GRAD ,  LAMPERT KLAUS DIPL CHEM DR

IPC: C09K3/24 ,  E01C13/12 ,  A63C19/10 ,  C08F110/02

Abstract: A snow substitute based on any ethylene polymerisate which consists of is not 80 wt.% of ethylene units has a density of 0.91-0.97 g/cm3 pref. 0.915 g/cm3 and is in the form of particles. The main axis of the particles i.e. the straight line through the two most distant points present, has a length of 10-10000 um pref. 100-6000 um, and the secondary axes have a length of is not 5% of the corresponding main axis pref. is not 10%. Particles of ethylene polymer prepared according to the invention can be applied directly to a provide background to produce a cover of "synthetic snow" of the desire thickness. It is also possible to set up the particles in an intimate mix with water-particles/water = 100-10 to 100-100 pts. wt- by e.g. spraying, the outside temperature being over or under 0 degrees C. the particles can be used in a mixture with natural snow or in combination with a brush type artificial snow. It has been shown to be advantageous if the particles are porous, when they are present together with water or snow.

公开(公告)号：DE2459161A1

公开(公告)日：1976-06-24

申请号：DE2459161

申请日：1974-12-14

Applicant: BASF AG

Inventor： MOORWESSEL DIETER DIPL CHEM DR ,  SCHOENE WERNER DIPL CHEM DR ,  STRICKLE ERICH ING GRAD ,  LAMPERT KLAUS DIPL CHEM DR

IPC: C09K3/24 ,  E01C13/12 ,  A63C19/10 ,  C08F210/06

Abstract: The snow substitute is based on plastics materials such as polymerisates of monoolefin type unsatd. hydrocarbons or chlorinated hydrocarbons. Polymerisate consists of is not 80 wt.% monomer of molecular wt. 40. The synthetic materials have a wt. average molecular wt. 0.1-106 have a granular particle shape, have particles diameter of 10-3000 um, an apparent density which amounts to 5-60% of the density of the polymer. The particles are porous and have a wt. per unit vol. of 0.7-0.98 g/cm3. Specifically used is a mixture from (1) 70-90 pts. wt. of a polypropylene with 1 wt.% soluble in boiling or room temp. xylol and (2) 10-30 pts.wt. of a polypropylne with >99 wt.% soluble in boiling room temp. xylol. Sum of pts.wt. from (1) and (2) = 100. The polypropylenes in (1) and (2) have approximately similar intrinsic viscosities and mol.wt. distributions. The absolute intrinsic viscosity measured in Dekalin at 130 degrees C is in the range 1-15. Particles prepared according to the invention can be applied directly to a provide background to produce a cover of "synthetic snow of the desired thickness. It is generally an advantage to set up the synthetic particles in an intimate mix with water - particles water = 100-10 to 100-100 pts. wt. by e.g. spraying, the outside temperature being over or under 0 degrees C. The particles can be used in a mixture with natura snow or in combination with a brush type artificial snow.

公开(公告)号：DE2741006A1

公开(公告)日：1979-03-29

申请号：DE2741006

申请日：1977-09-12

Applicant: BASF AG

Inventor： SCHMIDT FRANZ DIPL CHEM DR ,  SCHUETTE WILHELM DIPL CHEM DR ,  STRICKLE ERICH ING GRAD ,  RATH HANS PETER DIPL CHEM DR

IPC: C08K5/06 ,  C08L59/02 ,  F16C33/20 ,  C08K5/05

公开(公告)号：DE2500181A1

公开(公告)日：1976-07-08

申请号：DE2500181

申请日：1975-01-03

Applicant: BASF AG

Inventor： CORDES CLAUS DIPL CHEM DR ,  STRICKLE ERICH ING GRAD ,  ZENDATH JOSEF ING GRAD ,  SIMON GEORG NIKOLAUS DIPL ING

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/18 ,  C08J9/00 ,  C08J9/04

Abstract: A process for the manufacture of polyamide foams by anionic polymerization of lactams, in which from 0.1 to 15% w/w tetrachloroethylene is added to the reaction mixture to be foamed. The resulting foams are very tough, even at low temperatures.