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US 2016/0108309 A1Published application
Stabilizing Additives For Thermochromic Pigments
AssigneeChromatic Technologies, Inc.
InventorsTimothy J. Owen, Terrill Scott Clayton, Bryan M. Siske, Christopher W. Roberts, Vladimir Tomovich
Life of this patent
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Abstract
A microencapsulation process is improved by adding a stabilizing agent that contains one or more catalytic organo-metal oxide materials, such as metal soaps. This functions as a crosslinker by causing unsaturated bonds in the microcapsule walls to react, thereby stabilizing the microcapsules against the effects of additives to coatings that, otherwise, degrade the functionality of thermochromic or photochromic materials at the microcapsule core.
Claims21
1-37. (canceled)
A slurry comprising:
- a photochromic or thermochromic material encapsulated within a microcapsule;
- a solvent-based vehicle;
- and
- a stabilizing agent comprising a metallocene catalyst or transition metal bonded to at least one organic moiety through an oxygen linkage, said stabilizing agent in an amount ranging from 0.5% to 15% by weight of said slurry;
- wherein said stabilizing agent is effective to stabilize said photochromic or thermochromic material encapsulated within said microcapsule against deleterious effects of said solvent-based vehicle.
2 more elements
A slurry comprising:
- a photochromic or thermochromic material encapsulated within a microcapsule;
- a solvent-based vehicle;
- and
- a stabilizing agent comprising a melamine resin, said stabilizing agent in an amount ranging from 0.5% to 15% by weight of said slurry;
- wherein said stabilizing agent is effective to stabilize said photochromic or thermochromic material encapsulated within said microcapsule against deleterious effects of said solvent-based vehicle.
2 more elements
Dependencies are inferred from the claim text.