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    • 1. 发明授权
    • Block copolymer and method of producing the same
    • 嵌段共聚物及其制造方法
    • US5342895A
    • 1994-08-30
    • US11845
    • 1993-01-28
    • Toshio TagamiYoshio ImaiMasaaki KakimotoOsamu KiyoharaHitoshi Narushima
    • Toshio TagamiYoshio ImaiMasaaki KakimotoOsamu KiyoharaHitoshi Narushima
    • C08G81/02C08L77/00
    • C08G81/028
    • Disclosed is a polyamide/polybutadiene/acrylonitrile block copolymer useful in a wide variety of applications, such as an adhesive film, which comprises a polycondensate comprising a polybutadiene/acrylonitrile copolymer having a carboxyl group at each terminal thereof and a polyamide having an aminoaryl group at each terminal, and which is represented by general formula (I) ##STR1## wherein R is a divalent organic group, Ar is a divalent aromatic group, x, y, z, m and n each: represent mean degree of polymerization and are integers in the ranges of x=3 to 7, y=1 to 4, z=5 to 15, n=1 to 30, and nm=2 to 20, respectively. Also, disclosed is a method of producing the polyamide/polybutadiene based block copolymer by polycondensing an aromatic diamine with an aromatic dicarboxylic acid to form a polyamide having an aminoaryl group at each terminal thereof, and then polycondensing it with a poiybutadiene/acrylonitrile copolymer having a carboxyl group at each terminal thereof, preferably in the presence of an aromatic phosphite and a pyridine derivative.
    • 公开了可用于各种应用的聚酰胺/聚丁二烯/丙烯腈嵌段共聚物,例如粘合剂膜,其包含包含其末端具有羧基的聚丁二烯/丙烯腈共聚物和在其末端具有氨基芳基的聚酰胺的缩聚物 其中R为二价有机基团,Ar为二价芳族基团,x,y,z,m和n各自表示平均值,表示通式(I) 聚合度为x = 3〜7,y = 1〜4,z = 5〜15,n = 1〜30,nm = 2〜20的整数。 此外,还公开了通过使芳族二胺与芳族二羧酸缩聚以在其每个末端形成具有氨基芳基的聚酰胺,然后与聚丁二烯/丙烯腈共聚物进行缩聚来制造聚酰胺/聚丁二烯系嵌段共聚物的方法,所述聚丁二烯/ 羧基,优选在芳香族亚磷酸酯和吡啶衍生物的存在下进行。
    • 4. 发明授权
    • Liquid crystal monomeric compound and liquid crystal polymer compound
modified therewith
    • 液晶单体化合物和用其改性的液晶聚合物化合物
    • US5451339A
    • 1995-09-19
    • US63562
    • 1993-05-19
    • Yoshiichi SuzukiYoshio ImaiMasaaki Kakimoto
    • Yoshiichi SuzukiYoshio ImaiMasaaki Kakimoto
    • C07C69/94C08G77/38C09K19/20C09K19/32C09K19/40C09K19/52C07F7/04C09K19/12
    • C09K19/322C07C69/94C08G77/38C09K19/2021C09K19/408
    • The present invention is to provide a liquid crystal monomeric compound where a liquid crystal phase readily appears, which is excellent in alignment control, film-formability, durability, heat-stability and compatibility, and is able to be applied to electro-optical liquid crystal elements and recording elements; and a side-chain liquid crystal polymer compound modified with such a monomeric compound.The liquid crystal monomeric compound is represented by the following formula:CH.sub.2 .dbd.CH--(CH.sub.2).sub.m --R [1]wherein m is an integer of 2 to 20 and R is a group selected from the group consisting of ##STR1## wherein p is 1 or 2, Rf is CF.sub.3 or CF.sub.2 F.sub.5, R.sup.1 is an alkyl group having 3-18 carbon atoms, * means an optically active carbon atom, (A) and (B) each is a group independently selected from the group consisting of ##STR2## which may be substituted with one or more halogen atoms, and X is --O--, --COO--or a direct linkage, and ##STR3## wherein p, Rf, R.sup.1, (A), (B), X and * have the same meanings as above.
    • 本发明提供一种容易出现液晶相的液晶单体化合物,其取向控制,成膜性,耐久性,热稳定性和相容性优异,能够应用于电光液晶 元素和记录元素; 和用这种单体化合物改性的侧链液晶高分子化合物。 液晶单体化合物由下式表示:CH 2 = CH-(CH 2)m R [1]其中m为2至20的整数,R为选自下组的基团:其中p 是1或2,Rf是CF 3或CF 2 F 5,R 1是具有3-18个碳原子的烷基,*表示光学活性碳原子,(A)和(B)各自独立地选自 其中p,R f,R 1,(A),(B),X和*具有相同的基团,X是-O-,-COO-或直链, 意义如上。