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US 10,895,673 B2Granted
Stabilized infrared absorbing dispersions
Assignee3M Innovative Properties Company
InventorsWilliam W. Merrill, David T. Yust, Patrick M. Crain, Neeraj Sharma, Jung-Sheng Wu
Life of this patent
Estimating the term…
Abstract
A dispersion, a resin containing the dispersion and polymer film formed from the resin are disclosed. The dispersion includes an infrared light absorbing pigment including organo-metallic particles being less than 1.5 micrometer or less than one micrometer in size. The dispersion also includes a dispersant including phosphorus and a polyol.
Claims11
A resin comprising:
- a polyester material having a processing temperature of at least 250 degrees centigrade;
- an infrared light absorbing pigment dispersed in the polyester material, the infrared light absorbing pigment comprising organo-metallic particles, the organo-metallic particles comprising metal and an organic moiety, the metal covalently bonded to one or more atoms of the organic moiety, the infrared light absorbing pigment absorbs at a selected wavelength in a range of 750-1100 nm at least 1.5 times as strongly as in a visible range of 500-560 nm, at least 98% of the organo-metallic particles are less than 1.5 micrometer in size;
- and
- a dispersant comprising phosphorus;
- wherein the resin comprises the pigment in an amount above its solubility limit.
2 more elements
A polymer melt comprising:
- a polyester material;
- an infrared light absorbing pigment dispersed in the polyester material, the infrared light absorbing pigment comprising organo-metallic particles, the organo-metallic particles comprising metal and an organic moiety, the metal covalently bonded to one or more atoms of the organic moiety, the infrared light absorbing pigment absorbs at a selected wavelength in a range of 750-1100 nm at least 1.5 times as strongly as in a visible range of 500-560 nm, at least 98% of the organo-metallic particles are less than 1.5 micrometer in size;
- and
- a dispersant comprising phosphorus;
- wherein the polymer melt is at a temperature of at least 250 degrees centigrade.
2 more elements
Dependencies are inferred from the claim text.