公开(公告)号：AT248107B

公开(公告)日：1966-07-11

申请号：AT461863

申请日：1963-06-07

Applicant: BASF AG

Inventor： MAHLING DIETER DR ,  MUELLER-TAMM HEINZ DR ,  SEIBT HUBERTUS DR ,  ZUERN LUDWIG DR ,  SCHARF EMIL DR

IPC: C08K5/02 ,  D06M15/227

公开(公告)号：DE3873886D1

公开(公告)日：1992-09-24

申请号：DE3873886

申请日：1988-11-25

Applicant: BASF AG

Inventor： WEBER REINHOLD ,  WEILBACHER MANFRED DR ,  TATZEL HERMANN ,  ZUERN LUDWIG DR ,  ZETTLER HANS DIETER ,  HINSELMANN KLAUS

IPC: B29C47/00 ,  B29C44/00 ,  B29C44/34 ,  B29C44/50 ,  B29C48/355 ,  B29K25/00 ,  B29K105/04 ,  C08J9/04 ,  C08J9/12 ,  C08L25/04 ,  B29C67/22

Abstract: Foams with high compressive strength (I) are mfd. by extruding a mixt. of a styrene polymer (II), 3-9 wt.% blowing agent (III) comprising 80-100 wt.% CO2 and 0-20 wt.% hydrocarbon or halogenated hydrocarbon which is a gas at room temp. (IV), and the usual additives if required; the mixt. is extruded in a zone with an overpressure of 0.1-2 bar and allowed to set at this pressure. Pref. component (IV) has b.pt. -50 to +15 deg.C. (IV) is, e.g. propane, butane, isobutane, MeCl, EtCl, CCl2F2, etc.; pref., overpressure in the extrusion chamber is 0.4-1.6 bar.

公开(公告)号：DE2218935A1

公开(公告)日：1973-10-31

申请号：DE2218935

申请日：1972-04-19

Applicant: BASF AG

Inventor： FRIED MICHAEL DR ,  MOELLER ROLF DR ,  ZUERN LUDWIG DR ,  STAHNECKER ERHARD DR

IPC: C08F2/00 ,  C08F20060101 ,  C08F2/04 ,  C08F2/10 ,  C08F26/00 ,  C08F26/08 ,  C08F26/10 ,  C08F7/14

Abstract: Solutions of N-vinylpyrrolidone polymers can be prepared with particular advantage by polymerization of N-vinylpyrrolidone in an aqueous medium by adding the polymerization catalyst in portions or continuously to the monomer solution in the form of a finely divided suspension in an aqueous solution of N-vinylpyrrolidone polymer.

公开(公告)号：NL139988B

公开(公告)日：1973-10-15

申请号：NL293800

申请日：1963-06-07

Applicant: BASF AG

Inventor： MAHLING DIETER DR ,  MUELLER-TAMM HEINZ DR ,  SEIBT HUBERTUS DR ,  SCHARF EMIL DR ,  ZUERN LUDWIG DR

IPC: C08K5/02 ,  D06M15/227 ,  C08F45/00

公开(公告)号：DE2150056A1

公开(公告)日：1973-04-12

申请号：DE2150056

申请日：1971-10-07

Applicant: BASF AG

Inventor： KEPPLER HANS-GEORG DR ,  ZUERN LUDWIG DR ,  STAHNECKER ERHARD DR

IPC: C02F1/58 ,  C02F1/52 ,  C02F1/72 ,  C02F9/00 ,  C02C5/02

Abstract: 1396755 Purifying waste water BADISCHE ANILIN- & SODA-FABRIK AG 6 Oct 1972 [7 Oct 1971] 46193/72 Heading C1C In a process for purifying waste water, containing suspended matter and resulting from the manufacture of a styrene bead polymer in the presence of a vinyl pyrrolidone polymer or vinyl alcohol polymer used as suspension stabilizers, the suspended matter is flocculated by heating the waste water in the presence of from 0À02 to 5% by weight of sodium, potassium or ammonium persulphate. The waste water may be heated to 110-180‹ C. in the presence of the persulphate. Activated charcoal, silica or bentonite may be added to the waste water before, during or after heating. The flocculate may be removed by a suction belt strainer or by means of a decanter.

公开(公告)号：DE2057743A1

公开(公告)日：1972-05-25

申请号：DE2057743

申请日：1970-11-24

Applicant: BASF AG

Inventor： GEORG DR KEPPLER HANS ,  ZUERN LUDWIG DR ,  STAHNECKER ERHARD DR ,  GRUBER VINZENZ

IPC: C02F1/54 ,  C02C5/02

公开(公告)号：AT279183B

公开(公告)日：1970-02-25

申请号：AT186467

申请日：1967-02-24

Applicant: BASF AG

Inventor： ZUERN LUDWIG DR ,  STAHNECKER ERHARD DR ,  BUCHHOLZ KARL DR

IPC: C08J9/00 ,  C08F47/08

公开(公告)号：AT229461B

公开(公告)日：1963-09-25

申请号：AT220262

申请日：1962-03-16

Applicant: BASF AG

Inventor： HERRLE KARL DR ,  ZUERN LUDWIG DR ,  SCHMIDT OSWALD DR ,  MERTENS HEINRICH DR ,  HEIMANN SIGISMUND DR