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    • 2. 发明申请
    • Method of producing cellulose acylate dope and solution casting method
    • 生产纤维素酰化物涂料的方法和溶液流延法
    • US20060097428A1
    • 2006-05-11
    • US11311391
    • 2005-12-20
    • Masaru SugiuraTakashi Sakai
    • Masaru SugiuraTakashi Sakai
    • B29C45/00B29B7/00
    • C08L1/10B29C41/28B29K2001/00B29K2001/12C08J5/18C08J2301/12C08L1/12
    • One of silicon dioxide particles and an acid whose pKa in water at 25° C. is from 1.9 to 4.5 is mixed in a polymer solution, such that a first liquid may be obtained, and another one is added to the first liquid. Thus a dope is obtained. Otherwise, a solvent, silicon dioxide particles and an acid whose acid dissociation constant (pKa) in water at 25° C. is from 1.9 to 4.5 are mixed, such that a second liquid in which a concentration of said acid is 0.5 wt. % may be obtained. The second liquid is added to a polymer solution, and thus a dope is obtained. A cellulose acylate film produced from each dope can be peeled from a support adequately, and aggregation of the particles are reduced. Therefore, a film whose optical properties are excellent is produced at high speed.
    • 将二氧化硅颗粒和在25℃下的水中的pKa为1.9〜4.5的酸混合在聚合物溶液中,使得可以获得第一液体,另一种添加到第一液体中。 因此得到了涂料。 另外,溶剂二氧化硅颗粒和在25℃的水中的酸解离常数(pKa)为1.9〜4.5的酸混合,使得其中所述酸的浓度为0.5重量%的第二液体。 可以获得%。 将第二液体加入到聚合物溶液中,从而获得涂料。 由各种涂料生产的纤维素酰化物膜可以充分地从载体上剥离,并且颗粒的聚集减少。 因此,高速生产光学性能优异的膜。
    • 8. 发明申请
    • Solution casting method and polymer film
    • 溶液浇铸法和聚合物膜
    • US20050077648A1
    • 2005-04-14
    • US10959132
    • 2004-10-07
    • Masaru Sugiura
    • Masaru Sugiura
    • G02B5/30B29C41/26B29D7/01B29K1/00B29L7/00C08J5/18B29C39/14B29C55/06
    • C08J5/18B29C41/26B29D7/01B29K2001/00B29K2001/12C08J2301/12
    • A solvent in which dichloromethane is mixed with alcohol as a poor solvent is used for preparing a dope. Alcohol is supplied to the dope in a inline pipe to mix with a static mixer, such as a casting dope in which a composition of alcohol is increased. The temperature of the rotary drum is adjusted to −7° C. The casting dope is fed from a casting die to the rotary drum so as to form a casting film whose thickness is 40 μm. Since the content of alcohol is high and a storage modulus of the cooled casting film is at least 150 thousands Pa, the peeling defect does not occur, and the stretch is reduced as far as possible. A gel-like film is dried by a tenter type drying device, and stretched such that the stretch ratio is at most 110%. The produced film is thin and excellent in a surface condition and optical isotropy.
    • 将二氯甲烷与醇作为不良溶剂混合的溶剂用于制备涂料。 将酒精以在线管道供应到纺丝原液以与静态混合器混合,例如其中酒精组合物增加的浇注液。 将旋转鼓的温度调节至-7℃。将浇铸液从铸模进料到旋转鼓,以形成厚度为40μm的流延膜。 由于酒精含量高并且冷却的流延膜的储能模量至少为150千帕,所以不会发生剥离缺陷,并且拉伸尽可能地减小。 通过拉幅式干燥装置将凝胶状薄膜干燥,拉伸至伸缩率为110%以下。 所生产的薄膜在表面状态和光学各向同性方面是薄的和优异的。