Derivatized carbon monoxide copolymers
    37.
    发明授权
    Derivatized carbon monoxide copolymers 失效
    衍生一氧化碳共聚物

    公开(公告)号:US06306979B1

    公开(公告)日:2001-10-23

    申请号:US09623711

    申请日:2000-09-07

    IPC分类号: C08F28300

    摘要: In a process for the preparation of derivatized carbon monoxide copolymers, functionalized linear, strictly alternating carbon monoxide copolymers of carbon monoxide, at least one 1-alkene (A), where (A) is an aryl compound substituted by at least one terminal allyl or homoallyl moiety and by at least one hydroxyl or amino group, or an a-olefinically unsaturated aliphatic alcohol, and, if desired, at least one C2-C20-1-alkene (B) are reacted with an organic compound (C) having at least one electrophilic group in an aprotic organic solvent.

    摘要翻译: 在制备衍生的一氧化碳共聚物的过程中,一氧化碳,至少一种1-烯烃(A)的功能化的线性,严格交替的一氧化碳共聚物,其中(A)是被至少一个末端烯丙基或 高度烯丙基部分和至少一个羟基或氨基或α-烯属不饱和脂族醇,并且如果需要,至少一种C 2 -C 20 -1-烯烃(B)与有机化合物(C)反应, 在非质子有机溶剂中至少有一个亲电子基团。

    Production of homocopolymers, co-polymers or block copolymers from cycloolefinicmonomer units
    38.
    发明授权
    Production of homocopolymers, co-polymers or block copolymers from cycloolefinicmonomer units 失效
    由环烯单体单元生产均聚物,共聚物或嵌段共聚物

    公开(公告)号:US06262194B1

    公开(公告)日:2001-07-17

    申请号:US09402541

    申请日:1999-10-06

    IPC分类号: C08F204

    CPC分类号: C08F297/06 C08F32/00

    摘要: The invention relates to the production of homopolymers, co-copolymers or block copolymers from cycloolefinic monomer units characterized in that polymerization occurs in the presence of a catalyst of general formula (I), and optionally in the presence of an additive, wherein the substituents and indices have the following meaning: M is a metal from group VIII B of the periodic table of elements; E1, E2 are independently from each other an element from group V A of the periodic table of elements; Z is a bridging structural unit; Ar stands for annelated aryl units independent of each other; L1, L2 stands for formally uncharged Lewis base ligands; X means monovalent or bivalent anions; k means 1 or 2; l, m, n represent 1 or 2, whereby m×n=1.

    摘要翻译: 本发明涉及由环烯类单体单元生产均聚物,共聚物或嵌段共聚物,其特征在于聚合在通式(I)的催化剂存在下进行,并且任选地在添加剂存在下进行,其中取代基和 指数具有以下含义:M是元素周期表第VIIIB族的金属; E1,E2彼此独立地为元素周期表第ⅤA族元素; Z是桥接结构单元; Ar代表彼此独立的芳环单元; L1,L2代表正式不带电的路易斯碱配体; X表示一价或二价阴离子; k表示1或2; l,m,n表示1或2,由此mxn = 1。

    Polyimides for STN displays
    39.
    发明授权
    Polyimides for STN displays 失效
    STN显示屏的聚酰亚胺

    公开(公告)号:US5637672A

    公开(公告)日:1997-06-10

    申请号:US678360

    申请日:1991-04-18

    IPC分类号: C08G73/10 G02F1/1337 G02B1/04

    摘要: Polyamide esters which can be prepared from tetracarboxylic dianhydrides and can be converted into polyimides by alcohol cleavage with cyclization, characterized in that the radicals OR of the ester groups --COOR which are substituted during the polyimide formation are alkoxy radicals having 2 to 5 C atoms which are monosubstituted or polysubstituted by fluorine.Polyimides prepared therefrom are suitable as orientation layers in liquid-crystal display elements and in optical wave guides.

    摘要翻译: PCT No.PCT / EP90 / 01358 Sec。 371日期:1991年4月18日 102(e)日期1991年4月18日PCT提交1990年8月18日PCT公布。 公开号WO91 / 02765 日期1991年3月7日可由四羧酸二酐制备的聚酰胺酯,可通过环化醇裂解而转化为聚酰亚胺,其特征在于在聚酰亚胺形成期间被取代的酯基-COOR的基团OR为具有2个 至5个被氟取代或多取代的原子。 由其制备的聚酰亚胺适合作为液晶显示元件和光波导中的取向层。