公开(公告)号：DE2949843A1

公开(公告)日：1981-07-02

申请号：DE2949843

申请日：1979-12-12

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  CORDES CLAUS DIPL CHEM DR ,  FAULHABER GERHARD DIPL CHEM DR ,  RAUBENHEIMER JUERGEN

IPC: C08F2/38 ,  C08F220/04 ,  C08F22/04

Abstract: In the prodn. of crosslinked polycarboxylic acids (I) by free radical pptn. polymerisation of mixts. of 99.9-90 (wt.)% monoolefinically unsatd. polymerisable carboxylic acids and 0.1-10% di- or poly-olefinically unsatd. comonomers in aromatic hydrocarbons (II), homopolyvinylpyrrolidone (III) with a water content of max. 1% is used as protective colloid. (I) are very effective as thickeners in aq. systems and the mixts. can be pumped, since the viscosity is not too high, even at high (I) concns. In aq. or alcoholic-aq. alkaline medium, (I) form clear, almost structureless gels, which can be used as thickeners in the pharmaceutical, cosmetic, paper, textile, adhesive and dispersion paint fields.

公开(公告)号：DE2908201A1

公开(公告)日：1980-09-11

申请号：DE2908201

申请日：1979-03-02

Applicant: BASF AG

Inventor： CORDES CLAUS DIPL CHEM DR ,  HIRSCH GUENTHER DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR

IPC: D21H19/36 ,  D21H19/50 ,  D21H19/52 ,  D21H19/54 ,  D21H19/58 ,  D21H19/60 ,  D21H1/28

公开(公告)号：DE2840501A1

公开(公告)日：1980-03-27

申请号：DE2840501

申请日：1978-09-18

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  CORDES CLAUS DIPL CHEM DR

IPC: C08F2/00 ,  C08F2/02 ,  C08F2/16 ,  C08F2/18 ,  C08F2/20 ,  C08F210/00 ,  C08F210/14 ,  C08F220/00 ,  C08F220/04 ,  C08F222/06

Abstract: A process for the preparation of copolymers of maleic anhydride and relatively long-chain alkenes by suspension polymerization of these monomers in the presence of a free radical initiator and a dispersant at an elevated temperature, in excess alkene as the suspension medium, wherein a poly(alkyl vinyl ether) is used as the dispersant.

公开(公告)号：DE2749645A1

公开(公告)日：1979-05-10

申请号：DE2749645

申请日：1977-11-05

Applicant: BASF AG

Inventor： BLINNE GERD DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR

IPC: C08G65/38 ,  C08G65/40 ,  C08G75/23 ,  D01F6/66 ,  C07C147/06

公开(公告)号：DE2622496A1

公开(公告)日：1977-12-08

申请号：DE2622496

申请日：1976-05-20

Applicant: BASF AG

Inventor： BLINNE GERD DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR

IPC: C08K5/24 ,  C08K5/33 ,  C08K5/3445 ,  C08L77/00 ,  C08K5/34

公开(公告)号：DE2557652A1

公开(公告)日：1977-06-23

申请号：DE2557652

申请日：1975-12-20

Applicant: BASF AG

Inventor： BLINNE GERD DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR

IPC: C08G75/23

公开(公告)号：DE2529691A1

公开(公告)日：1977-01-27

申请号：DE2529691

申请日：1975-07-03

Applicant: BASF AG

Inventor： HORN PETER DIPL CHEM DR ,  ZAHN ERWIN DIPL CHEM DR ,  ILLERS KARL HEINZ DIPL PHYS DR ,  CORDES CLAUS DIPL CHEM DR

IPC: B29C47/00 ,  D01F6/60 ,  C08L77/00 ,  C08J7/08 ,  C08K3/16 ,  C08K5/20

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.

公开(公告)号：DE2454002A1

公开(公告)日：1976-05-26

申请号：DE2454002

申请日：1974-11-14

Applicant: BASF AG

Inventor： SCHLICHTING KARL DIPL CHEM DR ,  HORN PETER DIPL CHEM DR ,  ZEITLER GERHARD DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR

IPC: C08L67/02

公开(公告)号：DE2436384A1

公开(公告)日：1976-02-12

申请号：DE2436384

申请日：1974-07-29

Applicant: BASF AG

Inventor： DOERFEL HELMUT DIPL CHEM DR ,  SCHMIDT FRANZ DIPL CHEM DR ,  SCHUETTE WILHELM DIPL CHEM DR ,  CORDES CLAUS DIPL CHEM DR ,  SCHENK WOLFGANG DIPL CHEM DR

IPC: C08G2/00 ,  C08G2/28

Abstract: Method of removing odorous formaldehyde from stabilized shaped polyoxymethylenes in which an inert gas is caused to flow over stabilized and shaped solid polyoxymethylenes at elevated temperatures not high enough to cause sticking or fusion of the polyoxymethylene, until substantially all of the volatile formaldehyde has been removed.