公开(公告)号：CA2140752A1

公开(公告)日：1994-03-03

申请号：CA2140752

申请日：1993-08-16

Applicant: BASF AG

Inventor： FUNHOFF ANGELIKA ,  MC KEE GRAHAM E ,  BAUR RICHARD ,  KUD ALEXANDER ,  SCHWENDEMANN VOLKER ,  HARTMANN HEINRICH

IPC: C08G2/12 ,  C08G2/18 ,  C08G2/28 ,  C08G2/30 ,  C08G4/00 ,  C08G12/18 ,  C09K23/00 ,  C09K23/52 ,  C11D3/37 ,  C08G6/00 ,  C08G2/00

Abstract: A process for preparing polyacetals by copolymerization of glyoxylic esters with other copolymerizable monomers in the presence of anionic or cationic polymerization initiators, with or without the introduction of stable end groups and with or without hydrolysis of the copolymerized units of glyoxylic ester present in the copolymer comprises using as monomers cyclic formals derived from diols, homopolymers of formaldehyde, trioxepane or mixtures thereof, although up to 50 % by weight of this group of monomers may be replaced by other customary copolymerizable monomers, and the poly(acetal-carboxylate)s thus obtainable are useful as additives in reduced-phosphate and phosphate-free detergents and cleaners, as water treatment agents and as dispersants for finely divided substances.

公开(公告)号：CA2086907A1

公开(公告)日：1993-07-26

申请号：CA2086907

申请日：1993-01-07

Applicant: PIPPER GUNTER ,  GOETZ WALTER ,  CORDES CLAUS ,  FLOSS JOSEF G ,  MATTERN GUENTER ,  HILDENBRAND PETER ,  HURLEY JAMES ,  SCHLICHTING KARL ,  MC KEE GRAHAM E ,  BLINNE GERD ,  BASF AG

Inventor： PIPPER GUNTER ,  GOETZ WALTER ,  CORDES CLAUS ,  FLOSS JOSEF G ,  MATTERN GUENTER ,  HILDENBRAND PETER ,  HURLEY JAMES ,  SCHLICHTING KARL ,  MC KEE GRAHAM E ,  BLINNE GERD

IPC: C08J3/20 ,  C08J5/04 ,  C08L67/00 ,  C08L77/00

Abstract: O.Z. 0050/42919 In a process for producing filler-containing thermoplastic molding compositions by mixing fillers with thermoplastics in the melt, a) the fillers are mixed in a mixing apparatus in the melt with a low molecular weight thermoplastic having a melt viscosity of at most 30 Pas (measured at 20.degree.C above the melting point of the thermoplastic compound and at a shear gradient of 1,000 s-1), b) the product thus obtained is removed from the mixing apparatus, cooled and comminuted, and c) the comminuted product is then subjected in the solid phase to a post-condensation.