Liquid dentifrices
AssigneeChesebrough-Pond's USA Co., Division of Conopco, Inc.
InventorPeter L. Dawson
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Abstract
The invention relates to liquid dentifrices which contain particulate siliceous abrasive cleaning agents, stably suspended in a liquid medium with the aid of a polysaccharide gum as suspending agent. By using a particulate siliceous abrasive cleaning agent with a specific surface area of between 50 and 900 m.sup.2 /g, and using a liquid medium which is free from polyol-type humectants, liquid dentifrices are obtained with satisfactory rheological properties. Preferably the compositions have a compositional viscosity index of between 3 and 30, said index being defined as ##EQU1## wherein S=concentration in % of thickening silica, if present, in the liquid medium and P=concentration in % of polysaccharide gum in the liquid medium.
Claims6
A stable liquid dentifrice composition having a viscosity between at least 50 and up to not more than 500 pa.s so as to hold onto toothbrush bristles once dispensed from a container, the composition comprising from 2 to 50% by weight of a particulate siliceous abrasive cleaning agent having a specific surface area of between 50 and 900 m.sup.2 /g, stably suspended in an aqueous liquid medium which is substantially free from alcohol and polyol-type humectants with the aid of from 0.25 to 2% by weight of a polysaccharide gum as suspending agent.
Dependencies are inferred from the claim text.