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专利名称：Dentifrice发明人：Walter Bryan Davis申请号：US05/742595申请日：19761117公开号：US04102992A公开日：19780725
摘要：Dentifrice compositions containing a cleaning agent in particulate form whoseabrasivitiy is reduced by incorporating a water- insoluble particulate polymeric materialless abrasive than and of lower average density than the cleaning agent which is calciumcarbonate. The polymeric material is typically polymethylmethacrylate or polystyrene.The respective proportions are preferably 75-99.9% to 0.1-25%, by weight. The polymericmaterial is in the form of particles which are not substantially agglomerated and whichmay be of a variety of geometrical shapes including solid and hollow spheres, cavitied oruncavitied, or composed of a lattice of material.
申请人：BEECHAM GROUP LIMITED
代理机构：Jacobs & Jacobs
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