公开(公告)号：CA654812A

公开(公告)日：1962-12-25

申请号：CA654812D

Applicant: HOECHST AG

Inventor： KOCH GEROLD ,  ROCHLITZ FRITZ ,  LEDERER MICHAEL

公开(公告)号：BE582873A

公开(公告)日：1960-06-21

申请号：BE582873

申请日：1959-09-21

Applicant: HOECHST AG

Inventor： KUEHLKAMP ALFRED ,  KOCH GEROLD

IPC: C08F2/22 ,  C08F18/04 ,  C08F290/06

Abstract: Aqueous dispersions of a polyvinyl ester or of a vinyl ester copolymer are prepared by polymerizing at least one vinyl ester, particularly vinyl acetate, in an aqueous emulsion containing, calculated on the weight of the resulting dispersion, 0,1 to 15% of a water-soluble cellulose derivative, 0,01 to 10% of an alkali metal salt of a hydroxydiphenyl, 0,01 to 10% of an alkali metal salt of an inorganic and/or organic acid and 0,001 to 10% of a semi-ester of a dicarboxylic acid with a polyalkylene glycol or polyalkylene glycol derivative as such or in the form of an alkali metal salt of such semi-ester. The water-soluble cellulose derivative may be hydroxyethylated cellulose, the hydroxydiphenyl is preferably 2-hydroxy-diphenyl, and the alkali metal salt may be derived from phosphoric, boric, acetic, citric or adipic acid. The polyethylene glycol derivative may be a partially etherified or esterified polyethylene glycol, a nitrogen-containing polyethylene glycol, a partially-etherified nitrogen-containing polyethylene glycol, an hydroxyethylated polypropylene oxide or a partially etherified or esterified hydroxyethylated polypropylene glycol. The reaction mixture may also contain potassium persulphate as catalyst. Specification 466,173 is referred to.

公开(公告)号：CA661893A

公开(公告)日：1963-04-23

申请号：CA661893D

Applicant: HOECHST AG

Inventor： KOCH GEROLD ,  WINKLER FRITZ ,  ZIMMERMANN JOHANN W

公开(公告)号：CA637463A

公开(公告)日：1962-02-27

申请号：CA637463D

Applicant: HOECHST AG

Inventor： KOCH GEROLD ,  KUHLKAMP ALFRED

公开(公告)号：CA726146A

公开(公告)日：1966-01-18

申请号：CA726146D

Applicant: HOECHST AG

Inventor： SCHLACK PAUL ,  LOHAUS GERHARD ,  SOMMER HANS ,  KOCH GEROLD

公开(公告)号：CA663571A

公开(公告)日：1963-05-21

申请号：CA663571D

Applicant: HOECHST AG

Inventor： VILCSEK HERBERT ,  HERBST WILLY ,  ROCHLITZ FRITZ ,  KOCH GEROLD

公开(公告)号：DE1077871B

公开(公告)日：1960-03-17

申请号：DEF0026639

申请日：1958-09-20

Applicant: HOECHST AG

Inventor： KUEHLKAMP ALFRED ,  KOCH GEROLD

IPC: C08F2/22 ,  C08F18/04 ,  C08F290/06

Abstract: Aqueous dispersions of a polyvinyl ester or of a vinyl ester copolymer are prepared by polymerizing at least one vinyl ester, particularly vinyl acetate, in an aqueous emulsion containing, calculated on the weight of the resulting dispersion, 0,1 to 15% of a water-soluble cellulose derivative, 0,01 to 10% of an alkali metal salt of a hydroxydiphenyl, 0,01 to 10% of an alkali metal salt of an inorganic and/or organic acid and 0,001 to 10% of a semi-ester of a dicarboxylic acid with a polyalkylene glycol or polyalkylene glycol derivative as such or in the form of an alkali metal salt of such semi-ester. The water-soluble cellulose derivative may be hydroxyethylated cellulose, the hydroxydiphenyl is preferably 2-hydroxy-diphenyl, and the alkali metal salt may be derived from phosphoric, boric, acetic, citric or adipic acid. The polyethylene glycol derivative may be a partially etherified or esterified polyethylene glycol, a nitrogen-containing polyethylene glycol, a partially-etherified nitrogen-containing polyethylene glycol, an hydroxyethylated polypropylene oxide or a partially etherified or esterified hydroxyethylated polypropylene glycol. The reaction mixture may also contain potassium persulphate as catalyst. Specification 466,173 is referred to.