Prevention of crystal formation in toothpaste

Details Prevention of crystal formation in toothpaste Prevention of crystal formation in toothpaste

2006-11-14

2006-11-14

Krass, Frederick (Department: 1614)

Drug, bio-affecting and body treating compositions

Dentifrices

Fluorine or fluorine compound containing

C424S057000

Reexamination Certificate

active

07135163

ABSTRACT:
In dentifrices containing sodium bicarbonate and anionic species which can react with sodium and water to precipitate hydrated crystals, the ratio of water to humectants, abrasives, and/or thickeners is adjusted so that the dentifrice has a water activity of no greater than 0.60 so as to greatly reduce the salting out of the anionic species.

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