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    • 3. 发明申请
    • Polylactic acid resin composition, process for producing the same, biaxially stretched polylactic acid film, and molded articles thereof
    • 聚乳酸树脂组合物,其制造方法,双轴拉伸聚乳酸薄膜及其成型体
    • US20070032577A1
    • 2007-02-08
    • US10550666
    • 2004-02-10
    • Takeshi KanzawaSadayuki KobayashiMinoru YoshidaFumie SakidaJiro Kumaki
    • Takeshi KanzawaSadayuki KobayashiMinoru YoshidaFumie SakidaJiro Kumaki
    • C09D101/18
    • C08L67/04C08J5/18C08J2367/04C08L1/10C08L25/18C08L33/08C08L33/10C08L2666/26C08L2666/06C08L2666/04
    • The invention provides a resin composition containing poly(lactic acid) and a cellulosic ester, which are biomass type materials; a resin composition excellent in transparency, mechanical properties, and thermostability; a biaxially drawn film containing poly(lactic acid) and at least one compound selected from cellulosic esters, poly(meth)acrylates, and polyvinyl compounds having a glass transition temperature of 60° C. or higher; and a biaxially drawn film excellent in transparency, mechanical properties, and thermostability. The aims of the invention can be achieved by a resin composition obtained by melt-kneading a poly(lactic acid) polymer with a weight average molecular weight of 50,000 or higher and a cellulosic ester; a resin composition excellent in transparency and having luminous transmittance of 40% or higher for visible light with 400 nm; its production method; a molded article and a film made of the resin composition; a poly(lactic acid) biaxially drawn film containing a poly(lactic acid) polymer with a weight average molecular weight of 50,000 or higher and at least one compound selected from cellulosic esters, poly(meth)acrylates, and polyvinyl compounds having a glass transition temperature of 60° C. or higher; a poly(lactic acid) biaxially drawn film excellent in transparency and having film haze of 10% or lower; and a molded article made of the film.
    • 本发明提供含有聚(乳酸)和纤维素酯的树脂组合物,其为生物质型材料; 透明性,机械性能和热稳定性优异的树脂组合物; 含有聚(乳酸)和至少一种选自纤维素酯,聚(甲基)丙烯酸酯和玻璃化转变温度为60℃以上的聚乙烯基化合物的化合物的双轴拉伸膜; 以及透明性,机械性能和热稳定性优异的双轴拉伸膜。 本发明的目的可以通过将重均分子量为50,000以上的聚(乳酸)聚合物和纤维素酯熔融捏合得到的树脂组合物实现, 对于400nm的可见光,透明性优异,透光率为40%以上的树脂组合物; 其生产方式; 模塑制品和由该树脂组合物制成的薄膜; 含有重均分子量为50,000以上的聚(乳酸)聚合物的聚(乳酸)双轴拉伸膜和至少一种选自纤维素酯,聚(甲基)丙烯酸酯和具有玻璃化转变的聚乙烯基化合物的化合物 温度为60℃以上; 具有透明性优异且膜雾度为10%以下的聚(乳酸)双轴拉伸膜; 和由该膜制成的模制品。
    • 4. 发明授权
    • Polymer alloy
    • 聚合物合金
    • US07462672B2
    • 2008-12-09
    • US11802762
    • 2007-05-24
    • Sadayuki KobayashiJiro Kumaki
    • Sadayuki KobayashiJiro Kumaki
    • C08L67/02C08L81/04
    • C08L67/02C08J3/005C08L69/00C08L81/02C08L2666/18
    • A polymer alloy of polyphenylene sulfide resin and a polyester resin with polyethylene terephthalate as a main component, and forming a co-continuous structure with a wavelength of concentration fluctuation of 0.001 to 1 μm or a dispersed structure with a distance between particles of to 1 μm. The co-continuous structure or dispersed structure of the polymer alloy is formed by the phase separation caused by spinodal decomposition. The polymer alloy is miscible when the shear rate is kept in a range from 100 to 10000 sec−1, and is separated into phases under no shear flow. The polymer alloy of this invention can provide a molded article, film, fibers and the like respectively with excellent mechanical properties at high productivity.
    • 聚苯硫醚树脂和聚对苯二甲酸乙二醇酯作为主要成分的聚酯树脂的聚合物合金,形成浓度波动为0.001〜1μm的共连续结构体或粒径为1μm的分散结构体 。 聚合物合金的共连续结构或分散结构通过由旋节分解引起的相分离形成。 当剪切速率保持在100至10000秒-1的范围内时,聚合物合金是可混溶的,并且在无剪切流动下分离成相。 本发明的聚合物合金可以分别以高生产率提供优异的机械性能的模塑制品,薄膜,纤维等。