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    • 3. 发明授权
    • Alkali-resistant glass composition and glass fibers made therefrom
    • 耐碱玻璃组合物和由其制成的玻璃纤维
    • US4067744A
    • 1978-01-10
    • US706009
    • 1976-07-16
    • Koichiro OhtomoTakuji Yoshimura
    • Koichiro OhtomoTakuji Yoshimura
    • C04B14/42C03C3/089C03C4/20C03C13/00C03C13/02C03C3/08C04B31/06
    • C03C3/089C03C13/002C03C4/20
    • An alkali resistant glass composition and alkali resistant glass fibers composed of said glass composition which comprises______________________________________ SiO.sub.2 61 - 69 mole% , ZrO.sub.2 11.5 - 12.5 mole% , CaO 2 - 5 mole% , R.sub.2 O 16 - 20 mole% , K.sub.2 O 2 - 5 mole% , B.sub.2 O.sub.3 1 - 4 mole% , TiO.sub.2 0 - 0.3 mole% , and M.sub.x O.sub.y 0 - 1 mole ______________________________________ Wherein R.sub.2 O represents the total amount of Na.sub.2 O and K.sub.2 O; M is at least one metal selected from the group consisting of V, Cr, Mn, Fe, Co, Cu, Zn, As, Y, Mo, Cd, Sn, Sb, Hf and Ce; x and y are positive integers with the proviso that the valence of M multiplied by x equals 2y; and the content of fluorides, calculated as F.sub.2, is 0 to 1 mole%, and meeting the following conditions,A. r.sub.2 o + caO .gtoreq. 19 mole%,B. zrO.sub.2 + CaO + B.sub.2 O.sub.3 .ltoreq. 18.5 mole%, andC. the molar ratio of K.sub.2 O/CaO .gtoreq. 0.5.
    • 由所述玻璃组合物组成的耐碱玻璃组合物和耐碱玻璃纤维,其包含} SiO 2 61〜69摩尔%,} ZrO 2 11.5〜12.5摩尔%,CaO 2〜5摩尔%,} R2O 16〜20摩尔% K 2 O 2 -5摩尔%,} B2O3 1-4摩尔%,} TiO 2 0-0.3摩尔%,和MxOy0-1摩尔}其中R 2 O表示Na 2 O和K 2 O的总量; M是选自V,Cr,Mn,Fe,Co,Cu,Zn,As,Y,Mo,Cd,Sn,Sb,Hf和Ce中的至少一种金属; x和y是正整数,条件是M乘以x的价数等于2y; 以F2计算的氟化物含量为0〜1摩尔%,满足以下条件:A.R 2 O + CaO> / 19摩尔%,B.ZZO2 + CaO + B2O3 = 18.5摩尔%,和 C.K2O / CaO的摩尔比= 0.5。
    • 4. 发明授权
    • Finely powdered fibroin and process for producing same
    • 细粉状丝心蛋白及其生产方法
    • US4233211A
    • 1980-11-11
    • US79863
    • 1979-09-28
    • Koichiro OhtomoYukio Horikawa
    • Koichiro OhtomoYukio Horikawa
    • A61K47/42A61K8/64A61K8/96A61K9/14A61K38/17A61Q1/12C07K14/435C07K14/78C08J3/12C08L89/00C07G7/00A23J1/10
    • A61K8/64A61Q1/12C07K14/43586C08L89/00
    • Finely powdered high-purity fibroin and a process for producing the same are disclosed. The fibroin is a fine powder of fibroin in nonfibrous and particulate form which has an average molecular weight of not less than 50,000, particle diameters of from 1 to 100.mu., and a bulk density of from 0.1 to 0.7 g/cm.sup.3 as measured in the dry state and which contains at least 50% by weight of hot-water-insoluble fibroin having the .beta.-configuration. The process comprises dissolving a degummed silk material in an aqueous salt solution containing from 5 to 80% by weight of an alkali metal salt or alkaline earth metal salt; dialyzing the resulting aqueous fibroin solution; adding from 1 to 150 parts by weight of an alcohol to 100 parts by weight of the dialyzed aqueous fibroin solution having a fibroin concentration of from 3 to 20% by weight to form a gel of fibroin; dehydrating and drying the gel so formed; and then pulverizing the resulting powder. The fine powder of fibroin thus obtained is useful as an additive for cosmetic and pharmaceutical preparations.
    • 公开了细粉末状高纯度丝心蛋白及其制造方法。 丝心蛋白是非纤维和颗粒形式的丝心蛋白的细粉末,其平均分子量不小于50,000,粒径为1至100微米,体积密度为0.1至0.7克/厘米3, 干状态,其含有至少50重量%的具有β-构型的热水不溶性丝心蛋白。 该方法包括将脱胶丝材料溶解在含有5-80重量%碱金属盐或碱土金属盐的盐水溶液中; 透析所得的丝心蛋白水溶液; 加入1至150重量份的醇至100重量份的丝心蛋白浓度为3至20重量%的透析的水解丝心蛋白溶液以形成丝心蛋白凝胶; 脱水干燥凝胶如此形成; 然后粉碎所得粉末。 由此获得的丝心蛋白粉可用作化妆品和药物制剂的添加剂。