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    • 7. 发明申请
    • PRESSURE-SENSITIVE ADHESIVE FOR OPTICAL FILMS
    • 用于光学膜的压敏粘合剂
    • US20090305068A1
    • 2009-12-10
    • US12312916
    • 2007-11-26
    • Yoshihiro MorishitaKenichi HamadaTetsuya KunimuneKazushige Ishiura
    • Yoshihiro MorishitaKenichi HamadaTetsuya KunimuneKazushige Ishiura
    • C09J7/00C09J153/00
    • C09J153/00C08L53/00C08L2205/02C08L2666/24C09J9/02Y10T428/2891Y10T428/31797
    • Pressure-sensitive adhesives for optical films exhibit high cohesion, excellent re-workability, adhesion properties, heat resistance and durability without chemical crosslinking.A pressure-sensitive adhesive contains an acrylic triblock copolymer (I) at not less than 60% by mass based on the total mass of all solids contained in the pressure-sensitive adhesive, the acrylic triblock copolymer being represented by the formula A1-B-A2 wherein: A1 and A2 are each independently an alkyl methacrylate polymer block having Tg of not less than 100° C. and B is an acryl acrylate polymer block having Tg of not more than −20° C.; the content of the polymer block B is 50 to 95% by mass; Mw is in the range of 50,000 to 300,000; and the molecular weight distribution is in the range of 1.0 to 1.5. In a preferred embodiment, the acrylic triblock copolymer (I) is a combination of an acrylic triblock copolymer (Ia) having Mw of 50,000 to less than 100,000 and an acrylic triblock copolymer (Ib) having Mw of 100,000 to 300,000, in a mass ratio (Ia):(Ib) of 45:55 to 75:25.
    • 用于光学膜的压敏粘合剂表现出高的内聚力,优异的再加工性,粘附性,耐热性和耐化学交联的耐久性。 相对于压敏粘合剂中含有的全部固体的总质量,压敏粘合剂含有丙烯酸系三嵌段共聚物(I)为不低于60质量%,丙烯酸系三嵌段共聚物由式A1-B- A2其中:A1和A2各自独立地是Tg不低于100℃的甲基丙烯酸烷基酯聚合物嵌段,B是Tg不超过-20℃的丙烯酸丙烯酸酯聚合物嵌段; 聚合物嵌段B的含量为50〜95质量%。 Mw在50,000至300,000的范围内; 分子量分布在1.0〜1.5的范围内。 在优选的实施方案中,丙烯酸类三嵌段共聚物(I)是Mw为50,000〜小于100,000的丙烯酸三嵌段共聚物(Ia)和Mw为100,000〜300,000的丙烯酸系三嵌段共聚物(Ib)的组合,质量比 (Ia):( Ib)为45:55〜75:25。
    • 8. 发明申请
    • Process For Continuously Producing (Meth)Acrylic Ester Polymer or Copolymer
    • 用于连续生产(甲基)丙烯酸酯聚合物或共聚物的方法
    • US20080139759A1
    • 2008-06-12
    • US11659964
    • 2005-08-11
    • Kenichi HamadaYoshihiro MorishitaTatsufumi WatanabeKazushige Ishiura
    • Kenichi HamadaYoshihiro MorishitaTatsufumi WatanabeKazushige Ishiura
    • C08F118/02C08F2/01
    • C08F220/14C08F297/02C08F297/026
    • A continuous production process, which can allow polymerization to proceed at a milder polymerization temperature and a higher polymerization speed as compared with the conventional method while maintaining a high level of living properties and can produce an (meth)acrylic ester (co)polymer having a narrow molecular weight distribution in a high yield with good productivity. The continuous production process for producing an (meth)acrylic ester (co)polymer comprises the step of continuously feeding an organoaluminum compound-containing polymerization initiator solution and an (meth)acrylic ester into a reactor to continuously obtain a living polymer-containing polymer reaction liquid. The {[molar quantity of methacrylic ester or acrylic ester]/([molar quantity of organoaluminum compound]−[molar quantity of polymerization initiator])} fed into the reactor is regulated to be 15 to 80, and the content of the (meth)acrylic ester in the total feed amount of a polymerization initiator solution and an (meth)acrylic ester fed into the reactor is regulated to not more than 5% by mass.
    • 连续制备方法,其可以在保持高水平的生物性能的同时使聚合在较温和的聚合温度和较高的聚合速度下进行,同时可以生产具有(甲基)丙烯酸酯 窄分子量分布,产率高,生产率高。 制备(甲基)丙烯酸酯(共)聚合物的连续生产方法包括将有机铝化合物的聚合引发剂溶液和(甲基)丙烯酸酯连续进料到反应器中以连续获得含有活性聚合物的聚合物反应 液体。 进入反应器的{[甲基丙烯酸酯或丙烯酸酯的摩尔量] /([有机铝化合物的摩尔数] - [聚合引发剂的摩尔数])}调节为15〜80,并且(甲基 )丙烯酸酯在聚合引发剂溶液和进料到反应器中的(甲基)丙烯酸酯的总进料量中调节至不超过5质量%。
    • 10. 发明授权
    • Block copolymer
    • 嵌段共聚物
    • US06894114B2
    • 2005-05-17
    • US10381198
    • 2001-09-17
    • Masaji KatoKenichi HamadaKazushige IshiuraYoshihiro Morishita
    • Masaji KatoKenichi HamadaKazushige IshiuraYoshihiro Morishita
    • C08F297/02C08L53/00C09J153/00
    • C08L53/00C08F297/02C08F297/026C08L2666/02C09J153/00
    • A block copolymer is obtained by anionic polymerization, includes two or more polymer blocks A miscible with each other, and at least one (meth)acrylic ester polymer block B immiscible with the polymer blocks A, has a ratio [Mn(Amax)/Mn(Amin)] of 2 or more, wherein the ratio [Mn(Amax)/Mn(Amin)] is the ratio of the largest number average molecular weight [Mn(Amax)] to the smallest number average molecular weight [Mn(Amin)] among the polymer blocks A, has at least one block bonding including polymer block Amax-polymer block B-polymer block Amin, and has a total content of the polymer blocks A ranging from 20 wt % to 45 wt % based on the total mass of the block copolymer.This invention provides block copolymers having two or more polymer blocks A miscible with each other and at least one (meth)acrylic ester polymer block B immiscible with the polymer blocks A and exhibiting satisfactory flexibility, melt fluidity, moldability, coatability, mechanical properties, and other properties. The block copolymers of the present invention can yield molded articles having reduced anisotropy and surface stickiness and excellent mechanical properties and pressure-sensitive adhesive compositions having excellent adhesive properties.
    • 通过阴离子聚合获得嵌段共聚物,包括彼此可混溶的两种或更多种聚合物嵌段A和与聚合物嵌段A不混溶的至少一种(甲基)丙烯酸酯聚合物嵌段B的比例[Mn(A < 最大值/ Mn(分钟))为2以上,其中[Mn(A max max)/ Mn(A min min) / SUB>)]是最大数均分子量[Mn(A max max)]与最小数均分子量[Mn(A min min)]之比 在聚合物嵌段A中,具有至少一个嵌段键合,包括聚合物嵌段A聚合物嵌段B-聚合物嵌段A分子,并且具有聚合物嵌段 A的范围为20重量%至45重量%,基于嵌段共聚物的总质量。 本发明提供了具有两个或更多个彼此可混溶的聚合物嵌段A和至少一个与聚合物嵌段A不混溶的(甲基)丙烯酸酯聚合物嵌段B并具有令人满意的柔性,熔融流动性,成型性,可涂布性,机械性能和 其他属性。 本发明的嵌段共聚物可以得到各向异性,表面粘着性降低,机械性能优异,粘合性优异的粘合剂组合物的成型体。