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    • 3. 发明授权
    • O/W/O type multiple emulsion and method of preparing the same
    • O / W / O型多重乳液及其制备方法
    • US5985177A
    • 1999-11-16
    • US739146
    • 1996-10-28
    • Katsunori YoshidaToshio YanakiMichihiro YamaguchiHiroko WatanabeTakafumi KurosawaKenzo Ito
    • Katsunori YoshidaToshio YanakiMichihiro YamaguchiHiroko WatanabeTakafumi KurosawaKenzo Ito
    • A61K8/06A61K9/113A61Q19/00A61K7/44B01J13/00
    • A61K9/113A61K8/066A61Q19/00A61Q17/04
    • This invention relates to an oil-in-water-in-oil (O/W/O) type multiple emulsion which contains an inner oil phase, a water phase, and an outer oil phase. The inner oil phase is first dispersed in water to form an oil-in-water (O/W) emulsion. Then, the O/W emulsion is further dispersed in the outer oil phase to form the O/W/O type multiple emulsion. The outer oil phase contains an organophilic clay mineral, which can effectively prevent the inter-mixing of the inner oil phase with the outer oil phase, thus, producing an O/W/O type multiple emulsion with excellent storage stability. Upon the using of an oil-soluble compound in the inner oil phase, this multiple emulsion system can prevent the oil-soluble compound from being oxidized. In addition, since different kinds of oils can be selected for the making of the inner and outer oil phases, respectively, the O/W/O type multiple emulsion system allows one to present two different kinds of oils, which have different properties independent from each other, in one emulsion system.
    • 本发明涉及含油内油相,水相和外油相的油包水包油型(O / W / O)型多重乳液。 内部油相首先分散在水中以形成水包油(O / W)乳液。 然后,O / W乳液进一步分散在外部油相中以形成O / W / O型多重乳液。 外油相含有亲有机质的粘土矿物,可有效防止内油相与外油相的相互混合,从而生产出具有良好储存稳定性的O / W / O型多重乳液。 在内油相中使用油溶性化合物时,该多重乳液体系可以防止油溶性化合物被氧化。 另外,由于可以分别选择不同种类的油来制造内外油相,所以O / W / O型多重乳液体系允许呈现两种不同种类的油,它们具有独立于 在一个乳液系统中。
    • 5. 发明授权
    • O/W/O type multiphase emulsion
    • O / W / O型多相乳液
    • US6150425A
    • 2000-11-21
    • US147821
    • 1999-03-15
    • Tomoko SekineFumiaki MatsuzakiToshio YanakiMichihiro Yamaguchi
    • Tomoko SekineFumiaki MatsuzakiToshio YanakiMichihiro Yamaguchi
    • A61K8/06A61K9/113A61Q19/00B01F17/28B01F3/08B01F17/54
    • A61Q19/00A61K8/066A61K9/113Y10S514/941Y10S514/943Y10S514/944Y10S514/975Y10S516/902
    • An O/W/O type multiple emulsion in which an O/W type emulsion is dispersed in the outer phase oil wherein the O/W type emulsion in the inner phase contains water, an oil based ingredient, a surfactant and an amphiphilic substance chosen from those which can form a gel at ordinal temperature or higher in an amphiphilic substance-surfactant-oil-water system or N-long chain acyl acidic amino acid monosalt and an amphiphilic substance chosen from those which can form a gel at ordinal temperature or higher in an amphiphilic substance-N-long chain acyl acidic amino acid monosalt-oil-water system, said outer phase oil contains organophilic modified clay minerals and an emulsifying agent with a HLB of 7 or lower, and the weight ratio of the O/W type emulsion and the outer phase oil is 2:3-19:1. An O/W/O type multiple emulsion with superior stability over time and good usability.
    • PCT No.PCT / JP98 / 03187 Sec。 371 1999年3月15日 102(e)1999年3月15日PCT提交1998年7月15日PCT公布。 公开号WO99 /​​ 03572 日期1999年1月28日其中O / W型乳液分散在外相油中的O / W / O型多重乳液,其中内相中的O / W型乳液含有水,油基成分,表面活性剂 和两亲物质,其选自可以在两亲物质 - 表面活性剂 - 油 - 水体系或N-长链酰基酸性氨基酸单糖盐和选自可以形成凝胶的那些的两亲物质中在顺序温度或更高温度下形成凝胶的物质 在两亲物质N-长链酰基酸性氨基酸单糖 - 油 - 水系统中的序数温度以上,所述外相油含有亲有机质改性粘土矿物和HLB为7以下的乳化剂,重量比 的O / W型乳液和外相油为2:3-19:1。 一种O / W / O型多重乳液,具有优异的稳定性和良好的使用性。
    • 6. 发明授权
    • Low molecular weight acetylhyaluronate, skin-softening composition,
method of manufacturing the same, and method of purifying the same
    • 低分子量乙酰透明质酸盐,皮肤软化组合物,其制造方法及其纯化方法
    • US5679657A
    • 1997-10-21
    • US624634
    • 1996-08-02
    • Takashi OkaToshio YanakiMichihiro Yamaguchi
    • Takashi OkaToshio YanakiMichihiro Yamaguchi
    • A61K8/73A61Q19/00C08B37/08A61K31/715C07H1/00C07H5/06C07H13/04
    • A61Q19/00A61K8/735C08B37/0072A61Q19/10A61Q5/00
    • Low molecular weight acetylhyaluronate has the following characteristics: intrinsic viscosity: 50 to 200 cm.sup.3 /g substitution degree of acetyl group: 2.6 to 3.6 (excluding N-acetyl group) A skin-softening composition is mainly composed of this low molecular weight acetylhyaluronate. It can exhibit excellent skin-softening effect and moisturizing effect, while appropriately suppressing the thread-forming ability inherent in hyaluronic acid. A method of manufacturing acetylhyaluronate comprises the steps of suspending hyaluronic acid powder in an acetic anhydride solvent and then adding concentrated sulfuric acid thereto to effect acetylation. A method of purifying acetylhyaluronate comprises the steps of adding raw acetylhyaluronate to an aqueous acetone solution, adding and dissolving sodium lactate therein, and then adding highly concentrated acetone thereto to precipitate highly pure acetylhyaluronate. Acetylhyaluronate having highly purity can be obtained inexpensively.
    • PCT No.PCT / JP95 / 01613 Sec。 371日期:1996年8月2日 102(e)日期1996年8月2日PCT提交1995年8月11日PCT公布。 公开号WO96 / 05233 日期:1996年2月22日低分子量乙酰透明质酸盐具有以下特征:特性粘度:50〜200cm 3 / g乙酰基取代度:2.6〜3.6(不含N-乙酰基)皮肤柔软性组合物主要由该低 分子量乙酰透明质酸盐。 它可以表现出优异的皮肤软化效果和保湿效果,同时适当地抑制透明质酸固有的丝线形成能力。 制造乙酰透明质酸盐的方法包括将透明质酸粉末悬浮于乙酸酐溶剂中,然后向其中加入浓硫酸进行乙酰化的步骤。 一种纯化乙酰透明质酸的方法包括以下步骤:向丙酮水溶液中加入原料乙酰透明质酸盐,加入乳酸钠溶解并溶解,然后加入高浓度的丙酮以沉淀出高纯度的乙酰基透明质酸盐。 可以廉价地获得高纯度的乙酰基乙酸酯。