US 11,530,325 B2 · Electromagnetic radiation mitigation in coatings with spherical particles

Abstract

Coating compositions comprising a polymer binder and a sphere selected from porous metal oxide spheres formed from metal oxide particles and having, e.g., an average porosity of from 0.10 to 0.90; polymer spheres formed from a multimodal distribution of polymer particles; or mixtures thereof, are described herein. The sphere enhances the reflective characteristics of the coating compositions with respect to electromagnetic radiation. In particular, the coating compositions when dried, can exhibit UV reflectance, visible light reflectance, IR reflectance, or a combination thereof.

Claims13

Dependent claims

A coating composition comprising:

a polymer binder;
and
porous metal oxide spheres formed from metal oxide particles,
wherein the coating composition when dried exhibits a UV reflectance within a wavelength from 100 nm to 400 nm;
a visible light reflectance within a wavelength of from 400 to 800 nm;
an IR reflectance within a wavelength from 800 nm to 10 μm;
or a combination thereof,
wherein the composition is a UV reflective composition, and the porous metal oxide spheres have an average diameter from 1 micron to 3 microns;
an average porosity from 0.45 to 0.55;
and an average pore diameter from 50 nm to 400 nm, and
wherein the coating composition is an aqueous composition.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/817,173Filed 12 Mar 2020 · us provisional application

Priority

12 Mar 2019

Published

US 2020/0291241 A117 Sep 2020

Granted

20 Dec 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

C09D 5/00
Coating compositions
C09D 5/004
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes:…
C08J 9/32
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof: from compositions containing…
C08K 7/22
Use of ingredients characterised by shape: expanded, porous or hollow particles

Electromagnetic radiation mitigation in coatings with spherical particles

Life of this patent

Electromagnetic radiation mitigation in coatings with spherical particles

Life of this patent

Abstract

Claims13