Microcapsules containing organic fluorescent agent

An organic fluorescent agent and microcapsule technology, which is applied in microcapsule preparations, organic chemistry, medical preparations containing active ingredients, etc., can solve the problems that it is difficult to balance the effect of makeup and the effect of protecting or activating the skin

Inactive Publication Date: 2013-10-02
ROHTO PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to combine the effect of ma...

Method used

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  • Microcapsules containing organic fluorescent agent
  • Microcapsules containing organic fluorescent agent
  • Microcapsules containing organic fluorescent agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0342] Embodiment 1 (organic fluorescent agent is covalently bonded to the microcapsule of shell)

[0343] In a solution obtained by dissolving 1.95 g of polyvinyl alcohol in 190.35 g of water, 51 g of p-methoxycinnamic acid-2-ethylhexyl as an organic ultraviolet absorber and a crosslinkable monomer as a monomer component were uniformly mixed 51 g of ethylene glycol dimethacrylate, 20 mg of monomer 7-(p-vinylbenzyl)amino-4-methylcoumarin having a fluorescent site in the side chain, 5.1 g of polystyrene as an auxiliary polymer, 2 mg of indigo as an organic dye and 0.6 g of 2,2'-azobis(2,4-dimethylvaleronitrile) as a polymerization initiator were formed into a solution and suspended. For the suspension method, a high-speed stirrer (manufactured by T.K. ROBOMICS, PRIMIX) was used to stir at a stirring speed of 7000 rpm for 5 minutes and at a stirring speed of 10000 rpm for 10 minutes at room temperature.

[0344] Next, the suspension was put into a separable flask, and suspens...

Embodiment 2

[0359] Embodiment 2 (inner microcapsule of organic fluorescent agent)

[0360] In a solution obtained by dissolving 1.95 g of polyvinyl alcohol in 190.35 g of water, 51 g of p-methoxycinnamic acid-2-ethylhexyl as an organic ultraviolet absorber and a crosslinkable monomer as a monomer component were uniformly mixed 51 g of ethylene glycol dimethacrylate, 20 mg of organic fluorescent agent 7-N,N-diethylamino-4-methylcoumarin, 5.1 g of polystyrene as an auxiliary polymer, 2 mg of indigo as an organic pigment, And 0.6 g of 2,2'- azobis (2, 4- dimethylvaleronitrile) as a polymerization initiator was made into a solution, and it suspended. For the suspension method, a high-speed stirrer (manufactured by T.K. ROBOMICS, PRIMIX) was used to stir at a stirring speed of 7000 rpm for 5 minutes and at a stirring speed of 10000 rpm for 10 minutes at room temperature.

[0361] Next, the suspension was put into a separable flask, and suspension polymerization was carried out at 50° C. for...

Embodiment 3

[0364] Embodiment 3 (the microcapsule that organic fluorescent agent is present in shell by acid-base combination)

[0365] In a solution obtained by dissolving 1.95 g of polyvinyl alcohol in 190.35 g of water, 51 g of p-methoxycinnamic acid-2-ethylhexyl as an organic ultraviolet absorber and a crosslinkable monomer as a monomer component were uniformly mixed 51g of ethylene glycol dimethacrylate, 20mg of methacrylic acid as a monomer forming an acid-base pair with an organic fluorescent agent, 20mg of an organic fluorescent agent 7-N,N-diethylamino-4-methylcoumarin, 5.1 g of polystyrene as an auxiliary polymer, 2 mg of indigo as an organic dye, and 0.6 g of 2,2'-azobis(2,4-dimethylvaleronitrile) as a polymerization initiator were formed into a solution, and Suspend it. For the suspension method, a high-speed stirrer (manufactured by T.K. ROBOMICS, PRIMIX) was used to stir at a stirring speed of 7000 rpm for 5 minutes and at a stirring speed of 10000 rpm for 10 minutes at r...

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Abstract

Provided are microcapsules which contain an organic fluorescent agent which absorbs UV-A waves and emits blue light. The shell of the microcapsules includes a polymer or a copolymer of a vinyl-based polyfunctional monomer and/or vinyl-based monofunctional monomer.

Description

technical field [0001] The present invention relates to an organic fluorescent agent-containing microcapsule used as a cosmetic ingredient and a method for producing the same. Background technique [0002] The longing for fair skin with a sense of transparency has been deeply rooted since ancient times. Recently, the skin after makeup is required to have a sense of beauty such as a plain face or a transparent feeling. Therefore, inorganic powders such as hydroxyapatite, pearlescent pigments typified by mica titanium, or inorganic composites have been developed and used as cosmetic materials. [0003] In addition, the translucent human skin has a high reflectance to light from blue to green having a wavelength of about 450 to 550 nm among incident light. For this reason, conventional studies have examined the use of blue or green primers before applying foundation to make the skin transparent. The blue or green color material used at this time has a problem of lowering the...

Claims

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Application Information

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IPC IPC(8): B01J13/04A61K8/11A61K8/49A61K8/81A61Q17/00C07D311/16
CPCC07D311/16A61K8/0233A61K8/498A61K8/8129A61K2800/412A61K2800/434A61Q17/04A61Q19/08B01J13/14C09B57/02C09B67/0013C09B67/009C09B67/0097C09B69/109
Inventor 中井史郎秋吉美那大久保政芳
Owner ROHTO PHARM CO LTD
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