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Method for producing polyurethane foam for cosmetic application, and polyurethane foam for cosmetic application

A technique of polyurethane foam and its manufacturing method, which is applied in the manufacture of polyurethane foam for cosmetic coating and the field of polyurethane foam for cosmetic coating, which can solve the problems of crushing the surface of powder cake, etc., and achieve the effect of good feeling of use and small environmental load

Inactive Publication Date: 2016-01-06
TOKYO QUALITY ONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the silicone foam has an independent cell structure, when the powder is applied, the particles that make up the liquid foundation accumulate on the surface of the foam, and when the surface of the powder is wiped with foam, the surface of the powder is crushed as a result, and the surface of the powder is solidified The phenomenon of agglomeration that cannot be taken

Method used

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  • Method for producing polyurethane foam for cosmetic application, and polyurethane foam for cosmetic application
  • Method for producing polyurethane foam for cosmetic application, and polyurethane foam for cosmetic application
  • Method for producing polyurethane foam for cosmetic application, and polyurethane foam for cosmetic application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1～5

[0080] Using raw materials containing various polyols, using a disk-type Oaks mixer to produce polyurethane foam for cosmetic application by mechanical foaming, and studying the ease of introduction of inert gas, that is, the miniaturization of the cell diameter and the low density of the foam Polyols suitable for polyurethane foams for cosmetic coatings were studied based on the ease of chemical transformation and foam rupture.

Embodiment 1

[0082] In the presence of an acidic catalyst (addition polymerization catalyst), propylene oxide is added to an initiator with 2 functional groups to prepare a 2-functional polypropylene glycol with a terminal primary hydroxylation rate of about 70%, and further make the ring Oxyethane was added to prepare a bifunctional polyol (polyol A) having a terminal primary hydroxylation rate of 92% and a number average molecular weight of 1400.

[0083] Prepare polyol, crosslinking agent, foam stabilizer, amine catalyst (urethane reaction catalyst) and polyisocyanate as shown in Table 1. These raw materials are all liquid. Water is not used as blowing agent.

[0084] Table 1

[0085]

[0086] Continuously supply raw materials other than polyisocyanate to the Oaks mixer, spray while supplying nitrogen gas to react with polyisocyanate in the Oaks mixer, and ripen at 100°C for 7 minutes to produce polyurethane for makeup coating Foam.

[0087] At this time, the total supply rate of...

Embodiment 2

[0089] In the presence of an alkali catalyst, the addition polymerization of propylene oxide and the initiator with 2 functional groups is carried out, and the addition polymerization of ethylene oxide is further carried out to prepare a product with a terminal primary hydroxylation rate of 80% and a number average molecular weight of 2400 polyol (polyol B).

[0090] Raw materials were prepared in the same manner as in Table 1 except that polyol B was used instead of polyol A. In the same manner as in Example 1, a polyurethane foam for makeup application was prepared.

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Abstract

Provided is a method for producing a polyurethane foam for cosmetic application which provides a pleasant feeling when used, exhibits little liquid-foundation soaking, and does not produce powdery-foundation caking. This method involves machine foaming by using a polyol, a polyisocyanate, a catalyst, a foam stabilizer, and an inert gas, and when doing so: including as the polyol at least 30 mass% of a bifunctional polyol which has a number average molecular weight of 1000-3000 and a terminal hydroxyl group primary-group rate of 70% or higher; yielding an average primary-group rate of terminal hyroxyl groups in the polyol overall of 50% or higher; using a polyisocyanate having an isocyanate index in the range of 85-130; and supplying an amount of the inert gas which is two to ten times the total amount of supplied liquid starting material, when calculated volumetrically at 0 DEG C and 1 atm.

Description

technical field [0001] The present invention relates to a method for producing a polyurethane foam for makeup application such as a sponge puff for applying cosmetics such as pressed powder or liquid foundation, or an application member used for cosmetic flakes, and the polyurethane foam for makeup application. Background technique [0002] Conventionally, the following materials are known as foam materials for makeup application. [0003] [Wet process polyurethane] [0004] As an applicator made of wet polyurethane foam, for example, the applicator disclosed in Japanese Patent Publication No. Sho 58-189242 is known. Wet polyurethane foam is produced by dissolving a polyurethane polymer in dimethylformamide, stirring the composition containing a pore forming agent such as polyvinyl alcohol, filling it in a specified mold, and gelling it, and then using a large amount of The water is used to dissolve the pore forming agent. The pore structure of the wet polyurethane foam p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/00A45D33/34A45D34/04C08G101/00
CPCA45D33/34A45D34/04A45D2200/1018C08G18/4841C08G18/632C08G18/4072C08J9/0061C08J2201/022C08J2203/06C08J2205/044C08J2205/05C08J2205/06C08J2207/12C08J2375/08C08J2483/12C08J9/122C08G2110/0008
Inventor 熊木文秀天野仁木南龙太山田大辅三村成利
Owner TOKYO QUALITY ONE CORP
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