发明授权
US06562357B2 Blackhead removing sheet and method for producing blackhead removing sheet
失效
除黑头粉刺片及其制造除黑头粉刺片的方法
- 专利标题: Blackhead removing sheet and method for producing blackhead removing sheet
- 专利标题(中): 除黑头粉刺片及其制造除黑头粉刺片的方法
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申请号: US09327031申请日: 1999-06-07
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公开(公告)号: US06562357B2公开(公告)日: 2003-05-13
- 发明人: Masaru Hoshi , Hideaki Okabe
- 申请人: Masaru Hoshi , Hideaki Okabe
- 优先权: JP10-178146 19980610; JP10-178147 19980610
- 主分类号: A01N2534
- IPC分类号: A01N2534
摘要:
A blackhead removing agent, a blackhead removing sheet and a method for producing the blackhead removing sheet are disclosed. The blackhead removing sheet comprises a base layer which is composed of a nonwoven fabric having the fineness of 0.0001 denier or more but less than 0.1 denier, and a blackhead removing layer consisting of the blackhead removing agent that contains a water-soluble macromolecular compound as a primary component. The blackhead removing agent comprises a water-soluble macromolecular compound, a filler, and a plasticizer that is compatible with the water-soluble macromolecular compound. The amount of the plasticizer in the blackhead removing agent is less than 0.01 parts by weight with respect to 100 parts by weight of the water-soluble macromolecular compound. The water-soluble macromolecular compound preferably includes a copolymer of N-vinyl-2-pyrrolidone and vinyl acetate as a primary component.
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