公开(公告)号：US3355519A

公开(公告)日：1967-11-28

申请号：US29388063

申请日：1963-07-09

Applicant: BAYER AG

Inventor： ALFONS MULLER ERWIN ,  KLAUS HOEHNE ,  WILHELM BECKER

IPC: C08F8/20

CPC classification number: C08F8/20 ,  C08F10/00

公开(公告)号：US2908658A

公开(公告)日：1959-10-13

申请号：US63075156

申请日：1956-12-27

Applicant: BAYER AG

Inventor： WILHELM GRAULICH ,  WILHELM BECKER ,  OTTO BAYER

IPC: D06P1/44

CPC classification number: D06P1/44 ,  Y10T428/31906 ,  Y10T442/2787

公开(公告)号：US2874467A

公开(公告)日：1959-02-24

申请号：US43260554

申请日：1954-05-26

Applicant: BAYER AG

Inventor： WILHELM BECKER ,  DIETER STEUER

IPC: A61C13/00 ,  A61C13/07 ,  A61K6/083

CPC classification number: A61C13/00 ,  A61K6/083

公开(公告)号：US2816873A

公开(公告)日：1957-12-17

申请号：US42322554

申请日：1954-04-14

Applicant: BAYER AG

Inventor： JOSEF NOGRADI ,  WILHELM BECKER

IPC: A61K6/10

CPC classification number: A61K6/10

公开(公告)号：US3192176A

公开(公告)日：1965-06-29

申请号：US20703062

申请日：1962-07-02

Applicant: BAYER AG

Inventor： KARL-HEINZ MIELKE ,  HEINO LOGEMANN ,  GUSTAV PIEPER ,  WILLI DUNWALD ,  WILHELM BECKER

IPC: C08F220/44 ,  C08L9/08 ,  C08L25/12 ,  C09D5/25 ,  C09D125/12 ,  C09D133/20 ,  C09D155/02

CPC classification number: C08L25/12 ,  C08F220/44 ,  C08L9/08 ,  C09D125/12 ,  C09D133/20 ,  C09D155/02 ,  Y10S525/942 ,  Y10T428/294 ,  Y10T428/31688 ,  Y10T428/31696 ,  C08L2666/04 ,  C08L2666/54 ,  C08L2666/24

公开(公告)号：US3165500A

公开(公告)日：1965-01-12

申请号：US8314461

申请日：1961-01-17

Applicant: BAYER AG

Inventor： HEINO LOGEMANN ,  WILHELM BECKER

IPC: C08F20/44

CPC classification number: C08F20/44 ,  C08F2/16

Abstract: Acrylonitrile is polymerized by itself or with other ethylenically unsaturated copolymerizable compounds in an aqueous medium at pH values below 7 with the aid of per-compounds and sulphur compounds of low oxidation stage, in the presence of heavy metal ions and complex formers for the latter; the polymerization being carried out in the presence of formaldehyde sulphoxylate or formamidine sulphinic acid or an alkali metal salt thereof. Copolymerizable monomers specified are acrylic and methacrylic esters, styrene, vinyl and vinylidene chlorides, vinyl acetate and the CH-acidic compounds and NH-acidic compounds described in Specifications 867,006 and 933,483. Mixtures of copolymerizable monomers may be used, e.g. methyl acrylate+methacrylaminobenzene benzene disulphonimide. Complex formers specified are alkali metal and ammonium fluorides, pyrophosphates and hexametaphosphates, imido triglycolic acid and ethylene diamine p tetraacetic acid. Heavy metal ions specified are those of iron and copper. Catalyst systems specified consist of alkali metal persulphates in admixture with alkali metal or ammonium pyrosulphites, bisulphites or thiosulphates or sulphur dioxide. Also present may be regulators, e.g. mercaptans and dithioglycols. During the course of the reaction further quantities of the various reactants may be introduced into the polymerization system. Specification 823,345 also is referred to.

公开(公告)号：US2816397A

公开(公告)日：1957-12-17

申请号：US47277454

申请日：1954-12-02

Applicant: BAYER AG

Inventor： WILHELM BECKER ,  FRITZ SCHMIDT ,  OTTO BAYER

CPC classification number: A01G7/00 ,  Y10S71/903

公开(公告)号：US2695899A

公开(公告)日：1954-11-30

申请号：US26193151

申请日：1951-12-15

Applicant: BAYER AG

Inventor： WILHELM BECKER ,  OTTO BAYER

IPC: C08F8/20

CPC classification number: C08F8/20 ,  C08F10/00

公开(公告)号：US2678924A

公开(公告)日：1954-05-18

申请号：US24358851

申请日：1951-08-24

Applicant: BAYER AG

Inventor： WILHELM GRAULICH ,  WILHELM BECKER ,  OTTO BAYER

IPC: D06P1/44

CPC classification number: D06P1/44

公开(公告)号：US3135708A

公开(公告)日：1964-06-02

申请号：US10374261

申请日：1961-04-18

Applicant: BAYER AG

Inventor： MULLER ERWIN A ,  WILHELM BECKER

IPC: C08G18/46 ,  C08G18/60 ,  C08G18/64 ,  C08G18/68 ,  C08G18/69

CPC classification number: C08G18/4676 ,  C08G18/606 ,  C08G18/6453 ,  C08G18/68 ,  C08G18/696