Color-stabilized iodopropynyl butylcarbamate
AssigneeTroy Corporation
InventorJorg Thomas Wilken
Life of this patent
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Abstract
Microparticles containing an ultraviolet light absorbing polymer and 3-iodo-2-propynyl butylcarbamate (“IPBC”) resist discoloration by sunlight and other ultraviolet light sources. Methods for preparing the microparticles produce polymer-shielded, formaldehyde-free IPBC formulations which resist discoloration and leaching, and are especially useful in water-based applications. The microparticles include a polymer that absorbs light over a range of ultraviolet wavelengths associated with IPBC discoloration. The microparticles may be utilized in paints, stains, stuccoes, adhesives, and plastics, for example.
Claims22
Microparticles for stabilizing 3-iodo-2-propynyl butylcarbamate against discoloration, which comprise:
- a polymer that absorbs light over a range of ultraviolet wavelengths associated with 3-iodo-2-propynyl butylcarbamate discoloration;
- and
- a biocidal composition including 3-iodo-2-propynyl butyl carbamate and optionally, an additional biocidal material;
- which microparticles stabilize 3-iodo-2-propynyl butylcarbamate against discoloration, and have a particle size in the range of more than 20 to about 1000 microns and a surface area in the range of about 0.001 to about 0.9 m2 per gram.
Dependencies are inferred from the claim text.