公开(公告)号：FR1307669A

公开(公告)日：1962-10-26

申请号：FR881248

申请日：1961-12-07

Applicant: BASF AG

Inventor： PENNING ERNEST ,  WELZEL GERHARD ,  REINHARD HANS ,  WOLF HANS ,  WILHELM HANS

IPC: B32B27/00 ,  C08G18/62 ,  D06M15/267 ,  D06M15/564 ,  D06N3/04 ,  D06N3/14

公开(公告)号：GB919926A

公开(公告)日：1963-02-27

申请号：GB1581361

申请日：1961-05-02

Applicant: BASF AG

Inventor： FIKENTSCHER HANS ,  WILLERSINN HERBERT ,  PENNING ERNEST ,  DISTLER HARRY

IPC: C08F2/22 ,  C08F2/26

Abstract: Ethylenically unsaturated compounds are polymerized in aqueous emulsion in the presence of a radical-forming catalyst and, as an emulsifier, a water-soluble salt of an ethanesulphonic acid of the formula R-X-CH2-CH2-SO3M wherein M is a monovalent metal or ammonium, X is oxygen or sulphur and R is a straight chain or unsaturated hydrocarbon radical with at least 6 carbon atoms or the radical of a polyethylene glycol alkyl ether the alkyl radical of which is a straight chained or branched, saturated or unsaturated, hydrocarbon radical with at least 6 carbon atoms, e.g. the sodium salts of 2-(dodecylmercapto)-ethane sulphonic acid and the adducts of decyl and tridecyl alcohols with methyl vinyl sulphonate. Polymerizable monomers specified are methyl, ethyl and butyl acrylates, acrylonitrile, methacrylic esters, vinyl and vinylidene chlorides, vinyl naphthalene, vinyl methyl ketone, vinyl acetate and propionate, vinyl caprolactam, butadiene, isoprene, chloroprene, ethylene, vinyl ethers and esters and nitriles of maleic, fumaric and itaconic acids, which monomers may be polymerized alone or in admixture with each other or with other monomers, e.g. acrylic, methacrylic, chloroacrylic, maleic, fumaric and itaconic acids, acrylamide, methacrylamide and vinyl pyrrolidone. Catalysts specified are azodiisobutyramide, salts of persulphuric and peracetic acids, benzoyl peroxide and cumene hydroperoxide. The peroxidic catalyst may be activated by compounds such as sulphites, sugar and ascorbic acid. The ethane sulphonic emulsifiers may be used alone or in conjunction with conventional emulsifiers or protective colloids, e.g. gelatin, polyvinyl pyrrolidone and polyvinyl ether. Polymerization may be carried out with the addition of monomer during the course of the reaction. An example (2) describes the preparation of a vinylpropionate-butyl acrylate copolymer.