公开(公告)号：JPH11254432A

公开(公告)日：1999-09-21

申请号：JP34977098

申请日：1998-12-09

Applicant: BASF AG

Inventor： BARTHOLOMAEUS PETER ,  DAUNS HARALD ,  FRIEDL THOMAS DR ,  SCHOLZ GUENTER ,  LOOCK HERBERT ,  LUKAT WALTER

IPC: B29B7/00 ,  B29B7/88 ,  B29B9/04 ,  B29B9/10 ,  B29B9/12 ,  B29B11/10 ,  B29B13/10 ,  B29K75/00 ,  C08G18/00 ,  C08G18/08 ,  C08G18/65

Abstract: PROBLEM TO BE SOLVED: To provide a continuous manufacturing method for granular TPU for manufacturing chemically a product of high quality, particularly of superior homogeneity and fluidity. SOLUTION: Organic isocyanato, a 500-8000 molecular-weight bifunctional polyhydroxyl compound and a 60-400 molecular-weight bifunctional chain extender are reacted together under the presence of a catalyst and if required, an auxiliary and/or an additive on a continuous conveyor belt 2 at 50-250 deg.C to manufacture a sheet-shaped product 3 first, and then crushed and homogenized in a crushing and homogenizing device 5 provided with a crushing and mixing member and disposed in contact with the terminal of the conveyor belt 2, and then melted and homogenized in an extruder 9 fitted directly on the homogenizing device, and lastly granulated in a granulating device.

公开(公告)号：DE19754885C1

公开(公告)日：1999-09-16

申请号：DE19754885

申请日：1997-12-10

Applicant: BASF AG

Inventor： BARTHOLOMAEUS PETER ,  DAUNS HARALD ,  FRIEDL THOMAS ,  SCHOLZ GUENTER ,  LOOCK HERBERT ,  LUKAT WALTER

IPC: B29B7/00 ,  B29B7/88 ,  B29B9/04 ,  B29B9/10 ,  B29B9/12 ,  B29B11/10 ,  B29B13/10 ,  B29K75/00 ,  C08G18/00 ,  C08G18/08 ,  C08G18/65 ,  B29B9/02 ,  C08G18/40 ,  C08J3/12 ,  C08L75/04

公开(公告)号：GB2277324A

公开(公告)日：1994-10-26

申请号：GB9407646

申请日：1994-04-18

Applicant: BASF AG

Inventor： STERZEL HANS-JOSEF ,  RUETTER HEINZ ,  DAUNS HARALD ,  MATTHIES HANS GEORG ,  MINGES ROLAND

IPC: C08G63/08 ,  C08G63/78

Abstract: A polylactide is provided having a number average molecular weight of greater than 30,000 or a weight average molecular weight of greater than 60,000, wherein the proportion by weight in the molecular weight range up to 10,000 and in the molecular weight range above 500,000 is in each case from 5 to 15%. The polylactide may be prepared either by adding initiator during the production of the polymer in a plurality of portions at different times and/or at a plurality of locations if the process is carried out continuously or by using both a monofunctional initiator and a polyfunctional initiator or by carrying out the polymerisation in a continuous stirred reactor.