Acrylic Compositions Comprising Nanoparticulate Zinc Oxide Uv Absorber
OwnerReno Emilio Beltrame, Michael Ary Bosinventors
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Abstract
The invention relates to an acrylic composition comprising an acrylic component selected from acrylic resins and precursors thereof and a nonoparticulate zinc oxide UV absorber wherein the acidity of the acrylic composition is less than 0.5 g KOH per kilogram of resin solids.
Claims18
An acrylic composition comprising an acrylic component selected from acrylic resins and precursors thereof and a nonoparticulate zinc oxide UV absorber wherein the acidity of the acrylic composition is less than 0.5 g KOH per kilogram of resin solids.
A method of manufacture of a zinc oxide stabilized acrylic composition comprising forming an acrylic composition having an acidity of less than 0.5 g KOH per kilogram of resin solids and dispersing therein a nanoparticulate zinc oxide composition.
A method of forming a zinc oxide stabilizing agent for an acrylic composition comprising:
- contacting the zinc oxide nanoparticles with an acrylic monomer to form a coating of the monomer on the zinc nanoparticulates;
- polymerizing a monomer composition comprising acrylic monomer in the presence of the acrylic monomer coated zinc oxide nanoparticles to provide zinc oxide encapsulated in acrylic resin wherein the acidity of the acrylic resin is less than 0.5 g KOH per kilogram of resin.
Dependencies are inferred from the claim text.