Modified mineral-based fillers
First Claim
1. A method comprising:
- subjecting particles of at least one mineral-based filler comprising diatomaceous earth to cationic modification with at least one active ingredient comprising silver oxide to form a modified mineral-based filler;
subjecting the modified mineral-based filler to calcination at a temperature between about 427°
C. and about 900°
C., andadding the modified mineral-based filler to a synthetic, natural, or semisynthetic organic polymer to form a polymer composition or resin;
wherein the average diameter of the particles of the mineral-based filler ranges from 1 micron to 10 microns.
2 Assignments
0 Petitions
Accused Products
Abstract
Modified mineral-based fillers with enhanced retention of at least one active ingredient and/or enhanced antimicrobial capabilities are described. The materials comprise at least one mineral-based filler subjected to at least one modification process, which may be either a cationic modification process, a surface adsorption process, a surface retention process, or a combination thereof, with at least one active ingredient, followed by at least one thermal treatment. The at least one active ingredient may be a metal substance or other biocide, fungicide, mildewcide, antibiotic, insecticide, preservative, or antimicrobial agent. Methods for enhancing the antimicrobial activity of products in applications such as polymers, clothing, surgical equipment, coatings, and paints are also described.
44 Citations
4 Claims
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1. A method comprising:
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subjecting particles of at least one mineral-based filler comprising diatomaceous earth to cationic modification with at least one active ingredient comprising silver oxide to form a modified mineral-based filler; subjecting the modified mineral-based filler to calcination at a temperature between about 427°
C. and about 900°
C., andadding the modified mineral-based filler to a synthetic, natural, or semisynthetic organic polymer to form a polymer composition or resin; wherein the average diameter of the particles of the mineral-based filler ranges from 1 micron to 10 microns. - View Dependent Claims (2, 3, 4)
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Specification