Stearic Acid-Treated Calcium Carbonate Compositions Having Low Or No Detectable Free Stearic Acid And Related Methods
Patent No. EP2349929 (titled "Stearic Acid-Treated Calcium Carbonate Compositions Having Low Or No Detectable Free Stearic Acid And Related Methods") was filed by Imerys Pigments on Sep 4, 2009. The application was issued on Mar 27, 2019.
Patent Summary
A method for treating calcium carbonate with stearic acid to produce stearic acid-treated calcium carbonate compositions having low or no free stearic acid. The method involves combining calcium carbonate with stearic acid and water to form a mixture, blending the mixture at a temperature sufficient for a majority of the stearic acid to melt, and incorporating the treated calcium carbonate into a composition for forming a product. The treated calcium carbonate composition has less than about 10% free stearic acid relative to a monolayer concentration.
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EP2349929
- Application Number
- EP09813486A
- Filing Date
- Sep 4, 2009
- Status
- Opposition Rejected
- Oct 8, 2021
- Publication Date
- Mar 27, 2019
- External Links
- Slate, Register , Google Patents