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    • 5. 发明授权
    • Polylactic acid film
    • 聚乳酸薄膜
    • US08748543B2
    • 2014-06-10
    • US13119671
    • 2009-09-29
    • Shigeyoshi MasudaKohei EndoKinji Hasegawa
    • Shigeyoshi MasudaKohei EndoKinji Hasegawa
    • C08G63/91
    • C08J5/18C08J2367/04C08L67/04C08L2205/02G02F1/13363C08L2666/18
    • The polylactic acid film is obtained by melt extruding polylactic acid (A) prepared by melt kneading together polylactic acid (B) which comprises an L-lactic acid unit as the main ingredient and polylactic acid (C) which comprises a D-lactic acid unit as the main ingredient in a specific weight ratio, wherein the polylactic acid film has: (a) a stereocomplex crystal rate (S) defined by the following equation (i) of 90% or more: S={(ΔHmsc/(ΔHmsc+ΔHmh)}×100  (i) (in the above equation, ΔHmh is the melting enthalpy of a low-melting point crystal melting peak at a temperature lower than 190° C. obtained by differential scanning calorimeter (DSC) measurement and ΔHmsc is the melting enthalpy of a high-melting point crystal melting peak at a temperature of 190° C. or higher obtained by DSC measurement), (b) a haze of 10% or less, and (c) a haze change of 5% or less after it is heated at 140° C. for 10 minutes.
    • 通过熔融挤出通过熔融捏合聚乳酸(A)得到的聚乳酸薄膜,其中聚乳酸(A)是以包含L-乳酸单元为主要成分的聚乳酸(B)和包含D-乳酸单元的聚乳酸(C) 作为主成分,其中聚乳酸膜具有:(a)由下式(i)定义的立体络合物结晶速率(S)为90%以上:S = {(&Dgr; Hmsc /( &Dgr; Hmsc +&Dgr; Hmh)}×100(i)(在上式中,&Dgr; Hmh是通过差示扫描量热计获得的低于190℃的低熔点晶体熔融峰的熔融焓 (DSC)测定和&Dgr Hmsc是通过DSC测定得到的温度为190℃以上的高熔点结晶熔融峰的熔融焓),(b)10%以下的雾度和( c)在140℃加热10分钟后,雾度变化为5%以下。
    • 9. 发明申请
    • POLYLACTIC ACID COMPOSITION
    • 聚氨酯组合物
    • US20100120991A1
    • 2010-05-13
    • US12593257
    • 2008-03-31
    • Kiyotsuna ToyoharaRyuji NonokawaKohei EndoShin To
    • Kiyotsuna ToyoharaRyuji NonokawaKohei EndoShin To
    • C08G63/06
    • C08G63/08B29K2995/006C08L67/04C08L2666/18
    • It is an object of the present invention to provide a composition comprising polylactic acid and having improved injection moldability and an injection molded product thereof.The object of the present invention is attained by a specific polylactic acid composition which meets the following requirements (a) to (g) at the same time: (a) it must have a weight average molecular weight of 70,000 to 700,000; (b) the total content of Sn atom, Ti atom, Al atom and Ca atom must be 3 to 20 ppm; (c) it must contain a P atom in an amount of 3 to 3,000 ppm; (d) the (total number of gram-atoms of Sn, Ti, Al and Ca)/(number of gram-atoms of P) value must be 0.01 to 5; (e) the content of a compound having a molecular weight of 150 or less must be not more than 0.2 wt %; (f) the COOH terminal group concentration must be not more than 30 equivalents/ton; and (g) the melt viscosity (P) at a melting temperature of 230° C. must satisfy the following expression (1): 10 Pa·s
    • 本发明的目的是提供一种包含聚乳酸并具有改进的注射成型性的组合物及其注模产品。 本发明的目的是通过同时满足以下要求(a)至(g)的特定聚乳酸组合物实现的:(a)其重均分子量必须为70,000至700,000; (b)Sn原子,Ti原子,Al原子和Ca原子的总含量必须为3〜20ppm, (c)必须含有3〜3000ppm的P原子; (d)(Sn,Ti,Al和Ca的克原子数)/(P的克原子数)值必须为0.01〜5; (e)分子量为150以下的化合物的含量必须为0.2重量%以下。 (f)COOH端基浓度必须不超过30当量/吨; 和(g)熔融温度为230℃时的熔融粘度(P)必须满足下式(1):10Pa·s