Title:
DENTIFRICE
Document Type and Number:
Japanese Patent JPS5843911
Kind Code:
A
Abstract:
A dental-care composition having improved shelf life in respect of rheology and abrasiveness, which as a novel feature, contains, as a cleansing agent, a bifunctional (thickening and abrasive) precipitated silica characterized by the following physico-chemical properties: -Pendulum - roller - mill Jet mill -BET surface area m2/g 15-110 15-110 -Tamped density g/l 150-750 90-650 -Secondary particle size FIG. 1 FIG. 2 -distribution according to -Coulter Counter -"ALPINE" screen % by <1.5 <0.1 -retainings > 63 mu m weight -Cu abrasion in 10% mg 5-30 5-30 -strength glycerol disper- -sion -Lightness value A % 86-96 90-96 -Viscosity in a 30% 30,000-60,000 30,000-60,000 -strength dispersion in a -1:1 glycerol/water -mixture, Brookfield RTV, -Sp5 - The dental-care composition may additionally contain 0.5-5% by weight of polyethylene glycol or 2-14% by weight of a precipitated silica which in 15% strength dispersion in a glycerol/water mixture has a viscosity of not less than 30,000 mPa.s. Pyrogenic silica can also be employed successfully to regulate the viscosity of the product.
Inventors:
KARURUUHANSU MIYUURERU
MATEIIASU NOIMIYUURERU
GIYUNTERU TEYURUKU
MATEIIASU NOIMIYUURERU
GIYUNTERU TEYURUKU
Application Number:
JP5837882A
Publication Date:
March 14, 1983
Filing Date:
April 09, 1982
Export Citation:
Assignee:
DEGUSSA
International Classes:
A61K8/25; A61K8/00; A61K8/86; A61Q11/00; (IPC1-7): A61K7/16
Attorney, Agent or Firm:
Ezaki Mitsuyoshi