Title:
保護コロイドで安定化されたポリマーの製法、そのようにして得られたポリマー粉末と水性ポリマー分散液並びにその使用
Document Type and Number:
Japanese Patent JP4327391
Kind Code:
B2
Abstract:
The invention relates to a process for the preparation of polymers stabilized with protective colloids in the form of water-redispersible powders or aqueous dispersions thereof having a reduced content of volatile components, bya) polymerizing by emulsion or suspension polymerization, one or more monomers from the group consisting of vinyl esters, (meth)acrylates, vinyl aromatics, olefins, 1,3-dienes and vinyl halides and optionally further monomers copolymerizable therewith,b) aftertreating the polymer dispersion thus obtained by means of postpolymerization, distillation, and/or introduction of steam or inert gas to obtain a residual content of volatile, nonaqueous components of <2000 PPM, ANDc) spray drying of aftertreated polymer dispersion to a residual content of volatile, nonaqueous components of <400 ppm, the dispersion being adjusted prior to spray drying to a solids content of <45% by weight before spraying, the spray drying performed with gas at an inlet temperature of >120° C., and optimallyd) redispersing of the resulting powder in water.
Inventors:
Hans-Peter Weizel
Application Number:
JP2001377734A
Publication Date:
September 09, 2009
Filing Date:
December 11, 2001
Export Citation:
Assignee:
Wacker Chemie AG
International Classes:
C08F6/16; C08J3/02; C04B24/26; C04B40/00; C08F2/20; C08F2/22; C08F6/00; C08F6/24; C08F18/08; C08J3/12; C08L29/04; C08L101/00; C09J201/00
Domestic Patent References:
| JP6015430A | ||||
| JP8169914A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Einzel Felix-Reinhard