公开(公告)号：AT279161B

公开(公告)日：1970-02-25

申请号：AT1005166

申请日：1966-10-28

Applicant: BASF AG

Inventor： POHLEMANN HEINZ DR ,  FLORUS GERHARD DR ,  SLIWKA WOLFGANG DR ,  GELLRICH MANFRED DR

IPC: C08F2/18 ,  C08F2/20 ,  C08F2/22 ,  C08F212/08 ,  C08F220/12 ,  C08F47/18

Abstract: 1,155,275. Styrene/acrylate and/or methacrylate copolymers. BADISCHE ANILIN- & SODA FABRIK A.G. 28 Oct., 1966 [29 Oct., 1965], No. 48419/66. Heading C3P. Polymer dispersions are produced by copolymerizing styrene with 5-95% of esters of acrylic and/or methacrylic acid with C 1-8 alcohols in an aqueous medium in the presence of catalysts and emulsifiers, 0À01-2% of a protective colloid being gradually added after 20-80/) of the monomers have been copolymerized, and then completing the copolymerization. The esters may be ethyl, n- or tert-butyl, 2-ethylhexyl or cyclohexyl acrylate and/or methyl or butyl methacrylate. The copolymer may also include acrylic acid, acrylamide, methacrylamide, methyl vinyl carbinol, or vinyl sulphonic acid. Polyvinyl methyl ether may be present during the polymerization. The protective colloid may be a polyvinyl alcohol, which may be acetalized with n-butyraldehyde and completely hydrolysed, a hydroxyethyl cellulose, an ammoniacal solution of polyacrylic acid or a copolymer of acrylic acid/acrylamide/ acrylonitrile/methyl acrylate. The emulsifier may be the sodium salt of the sulphonated nonyl-phenol/ethylene oxide, ethylene oxide/noctylphenol, sodium vinyl sulphonate or propylene oxide/ethylene oxide. The catalyst may be potassium persulphate.

公开(公告)号：DE3443682A1

公开(公告)日：1985-06-13

申请号：DE3443682

申请日：1984-11-30

Applicant: BASF AG

Inventor： GELLRICH MANFRED DR ,  IZI KAMURAN ,  AUER HEINZ ,  KLANIG WOLFGANG

IPC: C08J11/02 ,  C08F6/24 ,  B01D3/38 ,  C08F6/16

Abstract: A process for the recovery of unreacted monomers from a product stream comprising about 98% water and about 2% of unreacted monomers, formed on deodorisation during the preparation of polymer dispersions, in which the product stream is heated, the vapour mixture comprising water and unreacted monomers which escapes from the product stream during this heating is condensed and is subsequently separated into water and unreacted monomers.

公开(公告)号：CH460354A

公开(公告)日：1968-07-31

申请号：CH1472066

申请日：1966-10-12

Applicant: BASF AG

Inventor： POHLEMANN HEINZ DR ,  FLORUS GERHARD DR ,  SLIWKA WOLFGANG DR ,  GELLRICH MANFRED DR

IPC: C08F2/18 ,  C08F2/20 ,  C08F2/22 ,  C08F212/08 ,  C08F220/12