发明授权
- 专利标题: Highly purified tocopheryl phosphate, process for producing the same, analytical method therefor and cosmetic
- 专利标题(中): 高纯度生育磷酸酯,其生产方法,分析方法和化妆品
-
申请号: US342228申请日: 1999-06-29
-
公开(公告)号: US6046181A公开(公告)日: 2000-04-04
- 发明人: Yutaka Oonishi , Tsutomu Nozawa , Takami Ooe , Keisuke Mano , Naoaki Misu , Yohei Kurata , Shinobu Ito , Eiji Ogata
- 申请人: Yutaka Oonishi , Tsutomu Nozawa , Takami Ooe , Keisuke Mano , Naoaki Misu , Yohei Kurata , Shinobu Ito , Eiji Ogata
- 申请人地址: JPX Tokyo
- 专利权人: Showa Denko K.K.
- 当前专利权人: Showa Denko K.K.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX7-268798 19951017; JPX7-319500 19951114
- 主分类号: A61K8/02
- IPC分类号: A61K8/02 ; A61K8/67 ; A61Q1/02 ; A61Q1/04 ; A61Q5/02 ; A61Q7/00 ; A61Q11/00 ; A61Q19/00 ; A61Q19/10 ; C07F9/655 ; G01N30/02 ; G01N30/88 ; G01N33/82 ; A61K7/035 ; A61K7/00 ; A61K7/02 ; A61K7/021 ; A61K7/027
摘要:
Disclosed herein are a highly purified tocopheryl phosphate and/or a salt thereof (tocopheryl phosphates) wherein a P,P'-bistocopheryl hypophosphate and/or a salt thereof (P,P'-bistocopheryl diphoshates) is contained in a proportion of not higher than 3% by weight; a process for producing a highly purified tocopheryl phosphate and/or a salt thereof, which comprises the steps of reacting a tocopherol with an oxyphosphorus trihalide followed by treating with an acid or basic aqueous solution to thereby form tocopheryl phosphates (i) in which P,P'-bistocopheryl diphoshates (ii) formed as by-products are contained, hydrolyzing the P,P'-bistocopheryl diphoshates (ii) under acid condition, and, optionally, rendering the hydrolyzate neutral or basic under basic condition; and a method of analyzing tocopheryl phosphates, comprising analyzing a sample containing components (i) and (ii) with the use of a high-performance liquid chromatograph column packed with a gel of a polymethacrylate having, bonded thereto, long-chain alkyl groups. None or only an extremely minute amount of P,P'-bistocopheryl diphoshates are contained in the highly purified tocopheryl phosphates, so that the highly purified tocopheryl phosphates exhibit antioxidant and blood circulation promoting effects, have excellent water solubility, are powdery so that the handling thereof is extremely easy, are free from cutaneous irritation and allergenecity and ensure dermal safety. Therefore, the highly purified tocopheryl phosphates are useful as cosmetic ingredients. The amounts of components (i) and (ii) can be simply measured with high accuracy by the above method.
公开/授权文献
信息查询