Uv protectant formulations
US-2024074949-A1 · Mar 7, 2024 · US
Highly lustrous silver-colored pigments with high opacity and metallic appearance, process for the preparation thereof and use of same
US9265701B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9265701-B2 |
| Application number | US-201214007285-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2012 |
| Priority date | Mar 25, 2011 |
| Publication date | Feb 23, 2016 |
| Grant date | Feb 23, 2016 |
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Abstract
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A silver-colored pigment is provided having a nonmetallic platelet-shaped substrate and at least one ilmenite-containing coating, wherein the nonmetallic platelet-shaped substrate is a nonmetallic platelet-shaped synthetic substrate and the amount of iron compounds, calculated as elemental iron, in the pigment is less than 5.0 % by weight, based on the total weight of the pigment. Processes for preparing the pigment also are provided.
First claim
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What is claimed is: 1. A silver-colored pigment having a metallic character or effect and comprising a nonmetallic platelet-shaped substrate, at least one titanium oxide layer, and at least one ilmenite-containing coating, wherein the nonmetallic platelet-shaped substrate is a nonmetallic platelet-shaped synthetic substrate and the amount of iron compounds, calculated as elemental iron, in the pigment is less than 5.0% by weight, based on the total weight of the pigment, wherein the at least one ilmenite-containing coating has a concentration gradient which decreases in the substrate direction, and wherein the pigment has a flop intensity F i , defined as the product of flop index and glitter intensity S_i as a function of the average particle size D 50 , in accordance with formula (II) Flop intensity ( F i ) = Flop index · S_i D 50 , ( II ) of at least 10. 2. The silver-colored pigment according to claim 1 , wherein the pigment comprises the following structure: (a) nonmetallic platelet-shaped synthetic substrate, (b) titanium oxide layer, and (c) ilmenite layer. 3. The silver-colored pigment according to claim 1 , wherein the pigment has an iron(III) oxide content of less than 0.5% by weight, based on the total weight of the pigment. 4. The silver-colored pigment according to claim 1 , wherein the silver-colored pigment has a chroma with a measurement geometry of 110°, relative to the angle of emergence of the light irradiated at 45°, is C* 110 ≦2.4. 5. The silver-colored pigment according to claim 1 , wherein the ilmenite-containing coating layer of the pigment has an average layer thickness from a range from 1 nm to 20 nm. 6. The silver-colored pigment according to claim 1 , wherein the pigment has an iron/titanium weight ratio as a function of the coating, in accordance with formula (I) Iron content ( % by weight ) Titanium content ( % by weight ) · Fraction of the coating ( % by weight ) , ( I ) in a range from 1 to 8, where “iron content” stands for the amount of iron compounds, calculated as elemental iron, and “titanium content” stands for the amount of titanium compounds, calculated as elemental titanium, in each case in the pigment and based on the total weight of the pigment, and where the “fraction of the coating (% by weight)” stands for the weight fraction, based on the total weight of the pigment, of the coating applied to the substrate. 7. The silver-colored pigment according to claim 1 , wherei
Assignees
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Classifications
Preparations for styling the hair, e.g. by temporary shaping or colouring · CPC title
Compositional purity · CPC title
of sub-stoichiometric inorganic compounds · CPC title
L* (lightness axis) · CPC title
Preparations for care of the skin · CPC title
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- What does patent US9265701B2 cover?
- A silver-colored pigment is provided having a nonmetallic platelet-shaped substrate and at least one ilmenite-containing coating, wherein the nonmetallic platelet-shaped substrate is a nonmetallic platelet-shaped synthetic substrate and the amount of iron compounds, calculated as elemental iron, in the pigment is less than 5.0 % by weight, based on the total weight of the pigment. Processes for…
- Who is the assignee on this patent?
- Grüner Michael, Schneider Thomas, Kaupp Günter, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification A61K8/29. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 23 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).