公开(公告)号：DE1004801B

公开(公告)日：1957-03-21

申请号：DEF0010127

申请日：1952-10-13

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  FUCHS DR OTTO ,  FRITZ DR HERMANN ,  STALLER DR ANTON

IPC: C08J3/09

公开(公告)号：DE946848C

公开(公告)日：1956-08-09

申请号：DEF0016232

申请日：1954-11-27

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  STARCK DR HANS

IPC: C08F8/12 ,  H04R1/12

Abstract: Polyvinyl alcohol having a viscosity of more than 140 centipoises (4 per cent aqueous solution) is produced by hydrolysis of polyvinyl acetate prepared using 0.8 to 8 per cent of dioleyl peroxide (based on monomer) as catalyst. The polymerization may be a bulk, emulsion or granular process, and may include benzoyl peroxide as additional catalyst. In examples monomer and catalyst are added continuously and bulk and granular polymerizations (using the ammonium salt of styrene-maleic acid copolymer) are described. The polyvinyl alcohol may be obtained by acid or alkaline hydrolysis or by re-esterification, and complete or partial hydrolysis may be effected. The medium used may be aqueous, organic or a mixture thereof and the examples illustrate the use of methanol and methanolic sodium hydroxide. The products may be used in the preparation of dispersions and emulsions, in the formation of fibres, ribbons and foils, and may act as thickening agents in textile, pharmaceutical and cosmetic industries. Specification 462,165, [Group IV], is referred to.

公开(公告)号：DE915735C

公开(公告)日：1954-07-29

申请号：DEN0001171

申请日：1937-10-29

Applicant: BECKER & VAN HUELLEN ,  HOECHST AG

Inventor： STARCK DR WERNER ,  SEN JOSEF VAN HUELLEN

IPC: C08L7/02 ,  C08L31/04 ,  C08L33/08 ,  C08L89/04 ,  C08L91/08 ,  C08L97/02

公开(公告)号：DE1171617B

公开(公告)日：1964-06-04

申请号：DEF0040436

申请日：1956-11-30

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  VILCSEK DR HERBERT ,  WINTER DR JAKOB ,  ROCHLITZ DR FRITZ

IPC: C08G63/692 ,  C08G79/04

公开(公告)号：DE1128652B

公开(公告)日：1962-04-26

申请号：DEF0022045

申请日：1956-12-31

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  VILCSECK DR HERBERT ,  WINTER DR JACOB ,  ROCHLITZ DR FRITZ

IPC: C08G63/692

公开(公告)号：DE1031511B

公开(公告)日：1958-06-04

申请号：DEF0017014

申请日：1955-03-09

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  STARCK DR HANS ,  SCHUELDE DR FELIX

IPC: C08G59/50 ,  C08G59/52 ,  C08G73/02 ,  C08G73/04

公开(公告)号：DE919668C

公开(公告)日：1954-11-02

申请号：DEP0013463

申请日：1942-07-21

Applicant: HOECHST AG

Inventor： KERN DR WERNER ,  MATTAUSCH DR JOSEF ,  KRIEGER DR ADOLF ,  STARCK DR WERNER ,  BILLIG DR KURT

IPC: C08F2/00 ,  C08F2/18 ,  C08F4/28 ,  C08F4/32 ,  C08F4/40

公开(公告)号：DE832681C

公开(公告)日：1952-02-28

申请号：DEE0000035

申请日：1949-10-11

Applicant: HOECHST AG

Inventor： BIER DR GERHARD ,  STARCK DR WERNER

IPC: C08F8/12

公开(公告)号：DE1164093B

公开(公告)日：1964-02-27

申请号：DEF0021800

申请日：1956-11-30

Applicant: HOECHST AG

Inventor： STARCK DR WERNER ,  VILCSEK DR HERBERT ,  WINTER DR JAKOB ,  ROCHLITZ DR FRITZ

IPC: C08G79/04

公开(公告)号：DE1080261B

公开(公告)日：1960-04-21

申请号：DEF0009325

申请日：1952-06-21

Applicant: HOECHST AG

Inventor： HEYNA DR JOHANNES ,  STARCK DR WERNER ,  STARCK DR HANS

IPC: D01F6/14