发明授权
US4457858A Method of making coated granular bleach activators by spray drying
失效
通过喷雾干燥制备涂层颗粒状漂白活化剂的方法
- 专利标题： Method of making coated granular bleach activators by spray drying
- 专利标题（中）： 通过喷雾干燥制备涂层颗粒状漂白活化剂的方法
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申请号： US396149申请日： 1982-07-07
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公开(公告)号： US4457858A公开(公告)日： 1984-07-03
- 发明人: Herbert Saran, deceased , Martin Witthaus
- 申请人： Herbert Saran, deceased , Martin Witthaus
- 申请人地址： DEX Dusseldorf
- 专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人地址： DEX Dusseldorf
- 优先权： DEX3128336 19810717
- 主分类号： C11D7/54
- IPC分类号： C11D7/54 ; C11D3/39 ; C11D17/00 ; C09K3/00
摘要：
Coated granular bleach activators and a process for their preparation comprising spray drying an aqueous slurry containing 1 to 1.7 parts by weight of water per part of a mixtue of (A) a powdery bleach activator and (B) at least one water soluble cellulose ether, starch, or starch ether in a ratio of A:B of from 99:1 to 90:10. The process utilizes a current of a drying gas having an entrance temperature of 100.degree.-200.degree. C. and an exit temperature of 40.degree.-120.degree. C.
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