公开(公告)号：GB1097873A

公开(公告)日：1968-01-03

申请号：GB1865865

申请日：1965-05-04

Applicant: BASF AG

Inventor： MAAHS PAUL ,  MATTHIES HANS GEORG ,  WENGER FRIEDRICH

IPC: B01D19/00 ,  C08G69/46 ,  D01D1/10

Abstract: Volatile constituents are removed from molten polyamides, e.g. polymers of C6- 12 lactams such as capro, oenantho-, capryl- or laurolactam, in the shown film evaporator by distributing the molten polyamide at 240 DEG to 300 DEG C. over the walls of chamber 1 via slot die 7 movable, below suction pipe 5, along the vertical axis. Subatmospheric pressure of 0.1 to 50 mm. Hg. is maintained in the chamber and the purified polymer is continuously removed by motor-driven screw 10 the upper portion of which is constructed as a stirrer (9).

公开(公告)号：FR1435343A

公开(公告)日：1966-04-15

申请号：FR15879

申请日：1965-05-05

Applicant: BASF AG

Inventor： MAAHS PAUL ,  MATTHIES HANS GEORG ,  WENGER FRIEDRICH

IPC: B01D19/00 ,  C08G69/46 ,  D01D1/10

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.

公开(公告)号：AU5235090A

公开(公告)日：1990-10-04

申请号：AU5235090

申请日：1990-03-29

Applicant: BASF AG

Inventor： BUCHERT HERMANN ,  NEUBERG RAINER ,  MATTHIES HANS GEORG ,  BUTZHEINEN KARL-HEINZ

IPC: D01F6/66 ,  D02G3/02 ,  D02G3/04 ,  D02G3/46

Abstract: The invention relates to sewing thread made from a polyether ketone, prepared from multifilament yarn having a filament linear density of from 1.0 to 10 dtex, a breaking extension of 3 to 30% and a boil shrinkage of less than 10%.

公开(公告)号：GB1038752A

公开(公告)日：1966-08-10

申请号：GB659065

申请日：1965-02-16

Applicant: BASF AG

Inventor： MAAHS PAUL ,  MATTHIES HANS GEORG ,  WENGER FRITZ

IPC: C08K5/3412

Abstract: Polyamides are stabilized to heat and air by addition of a copper compound soluble in it and a halogen substituted lactam. Polyamides specified are derived from capro-, capryl-, oenautho- or laurolactam, the corresponding o -aminocarboxylic acid or a salt of a diamine, e.g. hexa-, octa- or deca-methylene diamine or bis-(4-aminophenyl) methane and a dicarboxylic acid, e.g. adipic, suberic, sebacic, undecane dicarboxylic or heptadecane dicarboxylic acid. Copper compounds specified are cupric acetate, sulphate and sulphinate and Cu complexes with NH3, amines and tartaric acid. Halogeno-lactams may be the mono- and di-N-and/or C-substituted C6-C14 lactams, e.g. the chloro-, bromo- or iodo derivatives of capro-, capryl-, oenautho- or laurolactams. Compounds used in the examples are a -bromo-, a -iodo- and a ,a - dichlorocuprolactam. 0.01-0.1% of each stabilizer may be added before or after polymerization together with pigments, dyes and/or photostabilizers, e.g. Mn salts. In one particular embodiment 1-10% of the copper compound and 1-10% of the halolactam may be added to a polyamide-forming mixture, which may then be stored and added to further polymer-forming mixture when required. The polymerization may be continuous or batchwise using an acid or neutral catalyst.