公开(公告)号：US20150368409A1

公开(公告)日：2015-12-24

申请号：US14764294

申请日：2014-03-10

Applicant: BASF SE

Inventor： Joachim PAKUSCH ,  Bogdan MORARU ,  Jan RUDLOFF ,  Gary DEETER ,  Sebastian EMMERLING ,  Joerg NIEBERLE ,  Thomas GOETZ ,  Klaus SEIP ,  Gabriele LANG-WITTKOWSKI ,  Kristin SCHMIDT

IPC: C08J3/12 ,  C04B26/06

CPC classification number: C08J3/12 ,  C04B24/2641 ,  C04B26/06 ,  C04B28/04 ,  C04B40/0042 ,  C04B2103/0057 ,  C04B2103/0065 ,  C08J3/122 ,  C08J2323/06 ,  C08J2325/10 ,  C08J2327/06 ,  C08J2327/08 ,  C08J2329/00 ,  C08J2333/08 ,  C08J2333/10 ,  C08J2425/14 ,  C08J2433/02 ,  C08J2433/12 ,  C04B14/06 ,  C04B24/2676 ,  C04B2103/50 ,  C04B26/08 ,  C04B24/2623

Abstract: The present invention relates to a process for the preparation of a readily water-redispersible polymer powder by spray drying of an aqueous polymer B dispersion, wherein the spray drying of the aqueous polymer B dispersion is effected in the presence of a polymer A, wherein polymer A has a glass transition temperature ≧60° C., a weight average molecular weight Mw≧1000 and ≦25000 g/mol, a polydispersity index ≦5 and is composed of ≧5 and ≦50 wt % of at least one α,β-monoethylenically un-saturated mono- or dicarboxylic acid and/or anhydride (monomer A1), and ≧50 and ≦95 wt % of at least one other ethylenically un-saturated compound which is copolymerizable with the monomers A1 (monomer A2), in polymerized form, wherein the monomer amounts A1 and A2 sum up to 100 wt %.

Abstract translation: 本发明涉及一种通过喷雾干燥聚合物水分散体水溶液来制备容易水分再分散的聚合物粉末的方法，其中聚合物B水分散体的喷雾干燥在聚合物A的存在下进行，其中聚合物 A的玻璃化转变温度≥60℃，重均分子量Mw≥1000，＆nlE; 25000g / mol，多分散指数＆lt; lE; 5，由≥5和＆lt; nEE组成; 50wt％的至少一种 α和bgr-单烯属不饱和单或二羧酸和/或酸酐（单体A1）和≥50和＆lt; nEE; 95wt％的至少一种可与单体A1共聚的其它烯属不饱和化合物 单体A2），其中单体量A1和A2总计达100重量％。