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Photochromic pigment and preparation method thereof

A technology of photochromic and pearlescent pigments, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of single effect and complicated preparation methods, and achieve simple structure, easy preparation, and production cost saving Effect

Inactive Publication Date: 2021-12-10
HUIZHOU FORYOU OPTICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventors of the present application have found in the long-term research process that although the structure of the existing optical color-changing materials achieves the light-changing effect, the effect is relatively simple, and the preparation method is relatively complicated

Method used

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  • Photochromic pigment and preparation method thereof
  • Photochromic pigment and preparation method thereof
  • Photochromic pigment and preparation method thereof

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative effort shall fall within the scope of protection of this application.

[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiment of the present application, the directional indications are only used to explain the position in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the...

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Abstract

The invention provides a photochromic pigment and a preparation method thereof. The photochromic pigment comprises an interference pigment and a plurality of metal nanoparticles coating the surface of the interference pigment, wherein gaps are formed among the plurality of metal nanoparticles. The photochromic pigment integrates the interference effect of the interference pigment and the plasma resonance phenomenon on the surfaces of the metal nanoparticles, so that the photochromic pigment has a light change effect of changing color along with angle under natural light and also has different color changes under preset light intensity. The photochromic pigment has double anti-counterfeiting effects, has better anti-counterfeiting effects, and makes counterfeiting difficult.

Description

technical field [0001] The present application relates to the field of color-changing pigments, in particular to a photochromic pigment and a preparation method thereof. Background technique [0002] Optical color-changing pigment is a high-end anti-counterfeiting pigment that has attracted much attention in the market in recent years. The optical-changing anti-counterfeiting technology is based on the angle-dependent color effect of multi-beam interference of optical multilayer films. The equivalent optical path changes with the angle, which leads to the shift of the reflection spectrum, so that the color effect will produce a color change effect with the change of the viewing angle. This color change effect cannot be reproduced by ordinary scanning / copying. In recent years, with the advancement of optical variable pigment production technology and the continuous improvement of production technology, the application of optical variable anti-counterfeiting pigments has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06
CPCC09C1/0015C09C1/0051C09C1/0024C09C3/066C09C2200/20C09C2200/401C09C2200/405C09C2200/502
Inventor 孙洪保孙倩云陈章荣潘硕
Owner HUIZHOU FORYOU OPTICAL TECH
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