发明名称 |
COATED SODIUM PERCARBONATE PARTICLES, METHOD OF PRODUCING THEM AND THEIR USE |
摘要 |
In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.
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申请公布号 |
CA2166281(A1) |
申请公布日期 |
1995.01.26 |
申请号 |
CA19942166281 |
申请日期 |
1994.04.23 |
申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
ROLLMANN, JUERGEN;KLASEN, CLAAS-JUERGEN;BEWERSDORF, MARTIN;LIESER, THOMAS;BERTSCH-FRANK, BIRGIT;MUELLER, KLAUS |
分类号 |
C01B15/10;C11D3/39;C11D3/395;C11D7/54;C11D17/00;(IPC1-7):C01B15/00;D06L3/00 |
主分类号 |
C01B15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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