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The use of a silica of technical field of high structure, dense and dispersible as a thickener or a texturing agent in dentifrice compositions.
The use of a silica of technical field of high structure, dense and dispersible as a thickener or a texturing agent in dentifrice compositions.
Use of precipitated silica of pH 3.5-9, DOP oil absorption above 200 ml/g, specific surface 70-250 m2/g, diameter (determined by laser diffraction) at least 20 microns, and residual anion content, expressed in sodium sulfate, below 5 wt.%, as thickening or texture agent in toothpaste compositions. Use of precipitated silica of pH 3.5-9, preferably 5-8, DOP oil absorption above 200 (preferably above 250) ml/g, specific surface 70-250 (preferably 100-200) m2/g, diameter (determined by laser diffraction) at least 20 (preferably at least 25) microns, and residual anion content, expressed in sodium sulfate, below 5 (preferably below 3) wt.%, as thickening or texture agent in toothpaste compositions. Independent claims are also included for: (1) process of thickening of, or adding texture to toothpaste compositions, by incorporation into these composition of silica as claimed; and (2) toothpaste compositions comprising silica used as claimed, in de-agglomerated and/or dispersed state, in form of elements of median diameter below 50 microns, preferably below 20 microns.
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机译:使用pH 3.5-9的沉淀二氧化硅,DOP吸油量大于200 ml / g,比表面70-250 m 2 / g,直径(通过激光衍射确定)至少20微米以及残留阴离子含量,以低于5重量%的硫酸钠作为牙膏组合物中的增稠剂或质感剂。使用pH 3.5-9,优选5-8的沉淀二氧化硅,DOP吸油量高于200(优选高于250)ml / g,比表面积为70-250(优选100-200)m 2 / g,直径(确定)通过激光衍射)至少20(优选至少25)微米,以硫酸钠表示的残留阴离子含量低于5(优选低于3)重量%,作为牙膏组合物中的增稠剂或增稠剂。还包括以下方面的独立权利要求:(1)通过掺入要求保护的二氧化硅的方法,增稠或增加牙膏组合物的质地; (2)牙膏组合物,所述牙膏组合物以中值直径小于50微米,优选小于20微米的元素的形式,以去附聚和/或分散状态使用如所要求保护的二氧化硅。
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