A kind of photochromic organic pigment and preparation method thereof

A technology of photochromic materials and organic pigments, applied in the field of organic pigments, can solve the problems of poor stability of photochromic materials, poor fatigue resistance, narrow chromatographic range, etc., and achieve rich color layering and diverse needs, stability Strong, extended chromatographic range effect

Active Publication Date: 2022-07-01
宁波中苑颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above deficiencies in the prior art, the object of the present invention is to provide a photochromic organic pigment and a preparation method thereof to solve the problem of narrow chromatographic range of existing organic pigments, monotonous color and poor stability of photochromic materials and fatigue resistance. poor performance

Method used

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  • A kind of photochromic organic pigment and preparation method thereof
  • A kind of photochromic organic pigment and preparation method thereof
  • A kind of photochromic organic pigment and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In the photochromic organic pigment of this embodiment, the organic pigment includes the photochromic material represented by the structural formula I-a:

[0028]

[0029] In the formula, It is a polymer reacted with trimethyl-1,6-hexamethylene diisocyanate and 3-(allyloxy)-1,2-propanediol as raw materials.

[0030] The preparation method of the photochromic organic pigment of the present embodiment comprises the following steps:

[0031] S1: add trimethyl-1,6-hexamethylene diisocyanate and 3-(allyloxy)-1,2-propanediol in a molar ratio of 1:1.1 into the reaction kettle, introduce nitrogen protection, heat up to 120°C, and react 2h to obtain a branched polyurethane polymer rich in olefinic double bonds;

[0032] S2: adding the branched olefinic double bond-rich polyurethane polymer obtained in step S1 into a composite solvent composed of deionized water and toluene, stirring and mixing evenly, then adding 4-(vinyloxy)-aniline and an initiator Di-tert-butyl peroxid...

Embodiment 2

[0036] In the photochromic organic pigment of this embodiment, the organic pigment includes the photochromic material represented by the structural formula I-b:

[0037]

[0038] In the formula, It is a polymer reacted with 2,2,4-trimethylhexan-1,6-diyl diisocyanate and (R)-5-hexene-1,2-diol as raw materials.

[0039] The preparation method of the photochromic organic pigment of the present embodiment comprises the following steps:

[0040] S1: 2,2,4-trimethylhexan-1,6-diyldiisocyanate and (R)-5-hexene-1,2-diol in a molar ratio of 1:1.05 were added to the reaction kettle, and the Under nitrogen protection, the temperature was raised to 130 °C, and the reaction was carried out for 3 h to obtain a branched polyurethane polymer rich in olefinic double bonds;

[0041] S2: adding the branched olefinic double bond-rich polyurethane polymer obtained in step S1 into a composite solvent composed of deionized water and toluene, stirring and mixing evenly, then adding 4-(allyloxy)a...

Embodiment 3

[0045]In the photochromic organic pigment of this embodiment, the organic pigment includes the photochromic material represented by the structural formula I-c:

[0046]

[0047] In the formula, It is a polymer reacted with trimethylhexamethylene diisocyanate and 3-butene-1,2-diol as raw materials.

[0048] The preparation method of the photochromic organic pigment of the present embodiment comprises the following steps:

[0049] S1: add trimethylhexamethylene diisocyanate and 3-butene-1,2-diol in a molar ratio of 1:1.02 to the reaction kettle, introduce nitrogen protection, heat up to 120°C, and react for 3h to obtain a branched chain Polyurethane polymers rich in olefinic double bonds;

[0050] S2: adding the branched olefinic double bond-rich polyurethane polymer obtained in step S1 into a composite solvent composed of deionized water and toluene, stirring and mixing evenly, then adding 2-isopropyl-4-vinylaniline and triggering Potassium persulfate, the molar ratio of...

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Abstract

The invention discloses a photochromic organic pigment, which comprises a photochromic material shown in structural formula I, and obtains a branched chain polyurethane rich in olefin double bonds by performing polymerization reaction with diisocyanate and diol as raw materials The polymer is prepared by performing addition reaction of olefin double bond with the added aniline derivative, and finally performing dehydration reaction with the added fluorine-containing salicylaldehyde compound. The photochromic organic pigment of the present invention, by compounding the photochromic material shown in the structural formula I, not only expands the chromatographic range of the organic pigment, enriches the color layering and diversified demands on the surface of the coloring matter, but also the photochromic The material has excellent properties such as fast discoloration response speed, strong stability and good fatigue resistance, which meets the long-term use requirements of organic pigments. The invention also discloses a preparation method of the photochromic organic pigment.

Description

technical field [0001] The present invention relates to the technical field of organic pigments, in particular to a photochromic organic pigment and a preparation method thereof. Background technique [0002] Photochromic material refers to a material that can automatically change its color and change reversibly when irradiated by light of a certain wavelength. Photochromic materials can be divided into inorganic photochromic materials and organic photochromic materials. Inorganic photochromic materials have excellent stability and anti-aging properties, but their discoloration properties are poor, and the discoloration of some inorganic photochromic materials is irreversible, which greatly restricts their development and application. Organic photochromic materials have excellent color-changing properties and fast response to color changes, but they have problems such as poor stability to light and heat and poor fatigue resistance. [0003] Organic pigments are widely used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/00C08G18/83C08G18/84C09K9/02
CPCC09B67/0001C08G18/833C08G18/84C09K9/02C09K2211/14
Inventor 王猛
Owner 宁波中苑颜料有限公司
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