公开(公告)号：AU7150800A

公开(公告)日：2001-05-17

申请号：AU7150800

申请日：2000-11-10

Applicant: BASF AG

Inventor： SANDOR MARIO ,  ROCKEL HARALD ,  ZHAO CHENG-LE ,  DITTRICH UWE

IPC: C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F265/06 ,  C09D133/08 ,  C09D133/12 ,  C08J5/18 ,  C08F220/18 ,  C08F220/14

Abstract: An aqueous polymer dispersion having a minimum film-forming temperature of below +65° C. comprising at least one film-forming polymer in the form of dispersed polymer particles comprising a polymer phase P1 and a different polymer phase P2, the polymer dispersion being obtainable by free-radical aqueous emulsion polymerization comprising the following steps: i) polymerization of a first monomer charge M1 to give a polymer P1 having a theoretical glass transition temperature Tg (according to Fox) and ii) polymerization of a second monomer charge M2 to give a polymer P2 having a theoretical glass transition temperature Tg (according to Fox) which is different from Tg in the aqueous dispersion of the polymer P1, at least one chain transfer reagent being used either in the polymerization of the monomer charge M1 or in the polymerization of the monomer charge M2; a process for preparing the aqueous polymer dispersion; and a pigmented and/or filled coating composition comprising as a binder the aqueous polymer dispersion.

公开(公告)号：AU4363499A

公开(公告)日：1999-12-06

申请号：AU4363499

申请日：1999-05-19

Applicant: BASF AG

Inventor： ZHAO CHENG-LE ,  DITTRICH UWE ,  ROSER JOACHIM ,  PAKUSCH JOACHIM ,  ROCKEL HARALD

IPC: C08L57/00 ,  C08L33/06 ,  C09D5/00 ,  C09D5/02 ,  C09D133/06 ,  C09D157/00 ,  C09D201/00

Abstract: The present invention relates to aqueous formulations comprising:i. at least one hydrophilic particulate polymer P1, as an aqueous dispersion, composed essentially of monoethylenically unsaturated monomers having a water-solubility in the range from 10 to 100 g/l (at 25° C. and 1 bar), andii. at least one hydrophobic particulate polymer P2, as an aqueous dispersion, composed essentially of ethylenically unsaturated monomers having a water-solubility below 10 g/l (at 25° C. and 1 bar), the glass transition temperature Tg1 of the polymer P1 being less than 10 K different from the glass transition temperature Tg2 of the polymer P2.