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US 12,599,566 B2Granted
Titanium dioxide free white film coating composition, process for preparing the same and method of use thereof
AssigneeHercules Incorporated
InventorsKapish Karan, Ronald Hach
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Abstract
The present application provides titanium dioxide free film coating compositions comprising a combination of a water soluble cellulose ether, a water soluble anionic cellulose ether, calcium carbonate and a plasticizer. The invention further provides a process for preparing the film coating compositions and a method of coating solid substrates with such coating compositions.
Claims9
A titanium dioxide-free white film coating composition comprising:
- (i) from 20 wt. % to 50 wt. % of hydroxypropyl methyl cellulose (HPMC), a water-soluble cellulose ether;
- (ii) from 5 wt. % to 15 wt. % of carboxy methyl cellulose (CMC), a water soluble anionic cellulose ether;
- (iii) from 10 wt. % to 60 wt. % of calcium carbonate (CaCO3);
- (iv) from 5 wt. % to 25 wt. % of a plasticizer;
- (v) from 0.0 wt. % to 5 wt. % of medium chain triglycerides (MCT), and
- (vi) from 0.0 wt. % to 2 wt. % of citric acid monohydrate.
3 more elements
Dependencies are inferred from the claim text.