Title:
【発明の名称】中空シリカ粒子の製造方法
Document Type and Number:
Japanese Patent JP3419787
Kind Code:
B2
Abstract:
A method for preparing hollow particles comprising a dense silica shell, by precipitating active silica from an aqueous alkaline metal silicate on a core constituted in a material other than silica and by eliminating the material without destroying the silica shell. The particles are used as insulating materials; as hollow fillers for polymers, building materials, rubber, paper, paint; as absorbing agents; as toothpaste abrasives or additives; as support for the absorption and/or graining out active matter, the liberation of the active matter being effected by the destruction of the silica core by mechanical rupture or by dissolving the silica shell in a basic medium or by diffusion; as sun screening agents or sun screening agent supports or for the formulation of liquid matter in solid form.
Inventors:
Amish, Frederick
Application Number:
JP53779097A
Publication Date:
June 23, 2003
Filing Date:
April 22, 1997
Export Citation:
Assignee:
Rhodia stain
International Classes:
A61K8/00; A61K8/20; A61K8/23; A61K8/25; A61K8/31; A61K8/36; A61K8/89; A61K8/891; A61K8/97; A61Q11/00; A61Q17/04; B01J20/10; B01J20/28; C01B33/12; C01B33/18; C08K3/36; C08L83/04; C09C1/02; C09C1/28; C09C1/30; C09D7/61; D21H17/68; D21H19/40; (IPC1-7): C01B33/12; B01J20/10; B01J20/28; C08K3/36; C09C1/28; C09D7/12; D21H17/68; D21H19/40
Domestic Patent References:
| JP2302312A |
Other References:
【文献】米国特許5024826(US,A)
【文献】国際公開96/11054(WO,A2)
【文献】国際公開96/11054(WO,A2)
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)