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Copolymer and cosmetic material composition

A technology of copolymer and general formula, applied in cosmetics, cosmetic preparations, cosmetic preparations, etc., can solve the problems of inability to prepare preparations, difficulty in emulsification, and poor touch.

Inactive Publication Date: 2013-07-03
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, when a large amount of solid content or resin is blended in order to pursue high hair styling like Patent Documents 3 to 4, there is a problem that emulsification becomes difficult and formulations cannot be prepared. The problems of poor extension and poor touch

Method used

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  • Copolymer and cosmetic material composition
  • Copolymer and cosmetic material composition
  • Copolymer and cosmetic material composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10、 comparative example 1～3

[0320][production of copolymer]

[0321]

[0322] In the reactor that reflux condenser, dropping funnel, thermometer, nitrogen inlet pipe and stirring device are installed, add ethanol 100 weight parts and monomer (C) (ethylene glycol dimethyl Monomers (49.5 parts by weight of methoxypolyoxyethylene (23 moles) methacrylate, 25 parts by weight of tert-butyl methacrylate, 25 parts by weight of stearyl methacrylate) other than the The apparatus was replaced with nitrogen and then heated to 84°C. After putting 0.2 part by weight of dimethyl 2,2'-azobis(2-methylpropionate) into the reactor, it was stirred under heating at 84°C for 3 hours. Then, 300 parts by weight of water was added, and the reactor was kept at 84°C and stirred for 1 hour. Then, 0.5 parts by weight of ethylene glycol dimethacrylate was dissolved in 4 parts by weight of ethanol and put into the reactor, and then, 2,2'-azobis(2-methylpropane Acid) dimethyl ester 0.3 weight part, carried out stirring for 3 hours...

Embodiment 11～17、 comparative example 4～6

[0402] [production of copolymer]

[0403]

[0404] Add 100 parts by weight of ethanol and the monomers shown in Table 5 to a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen gas introduction pipe and a stirring device, replace the reactor with nitrogen, and then heat to 84°C. After charging 0.2 parts by weight of dimethyl 2,2'-azobis(2-methylpropionate) into the reactor, it was stirred under heating at 84°C for 4 hours. Then, 0.3 parts by weight of dimethyl 2,2'-azobis(2-methylpropionate) was charged into the reactor twice and stirred for 4 hours to obtain a copolymer (2-1).

[0405]

[0406] Except using the monomers described in Table 5, copolymers (2-2) to (2-5), copolymers (2-8) to (2 -10).

[0407]

[0408] 87.2 parts by weight of ethanol and the monomers shown in Table 5 were added to a reactor equipped with a reflux condenser, dropping funnel, thermometer, nitrogen gas introduction pipe and stirring device, and the reactor w...

Embodiment 18～19、 comparative example 7～9

[0477]

[0478] Using 49.5 parts by weight of methoxypolyoxyethylene (15 moles) methacrylate to replace 49.5 parts by weight of methoxypolyoxyethylene (23 moles) methacrylate of copolymer (1-1), in addition , Copolymer (3-1) was produced in the same manner as Copolymer (1-1).

[0479]

[0480] Using 49.5 parts by weight of methoxypolyoxyethylene (40 moles) methacrylate to replace 49.5 parts by weight of methoxypolyoxyethylene (23 moles) methacrylate of copolymer (1-1), in addition , Copolymer (3-2) was produced in the same manner as Copolymer (1-1).

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Abstract

The objective of the present invention is to provide: a copolymer having a wide degree of freedom of formulation as a spray, mist, wax, and the like, while having high setting properties and hair styling performance; and a cosmetic material composition containing the copolymer. The present invention relates to: a copolymer that has an endothermic start point between -25 DEG C and 40 DEG C, does not dissolve in water under 30 DEG C, and contains a constituent unit corresponding to the vinyl monomer (A) represented by general formula (1), and a constituent unit corresponding to the vinyl monomer (B) represented by general formula (2). (In general formula (1), R1 represents a hydrogen atom or a methyl group, R2 represents an alkylene group having 2-4 carbon atoms, R3 represents a hydrogen atom or an alkyl group having 1-3 carbon atoms, and m represents an integer from 15 to 50. In general formula (2), R4 represents an hydrogen atom or a methyl group, R5 represents an alkyl group having 2-10 carbon atoms, p and q each represent the integer 0 or 1, and p+q=1.)

Description

technical field [0001] The present invention relates to a copolymer having a specific structure, and a cosmetic composition containing the copolymer. Background technique [0002] In recent years, waxy hair styling products (pomade) have been widely accepted mainly by young people. Mousses, gels, and spray hairsprays, which are traditional hair fixatives, show the setting properties by forming a film on the hair with resin, while pomades, on the other hand, use carnauba wax, candelilla wax, The microcrystalline wax is used as the center of the solid oil to achieve the hair styling effect of regulating and managing the hair (for example, patent documents 1 and 2). [0003] Pomades have been developed so far in pursuit of higher hair styling properties (setting power, holding properties, and re-styling properties) and a good feeling of use. For example, hair styling products (patent document 3) coordinating polyethylene glycol with a high degree of polymerization, wax, and n...

Claims

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Application Information

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IPC IPC(8): C08F290/06A61K8/81A61Q5/06
CPCA61K8/81A61K8/8152A61Q5/04A61Q5/06C08F220/10C08F220/26C08F220/34C08F290/06
Inventor 石窪章
Owner MITSUBISHI CHEM CORP
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