Mixtures of liquid-crystal polymers and polyarylene sulfoxides, foams
made of such mixtures, process for their producing the same and their
use
    4.
    发明授权
    Mixtures of liquid-crystal polymers and polyarylene sulfoxides, foams made of such mixtures, process for their producing the same and their use 失效
    液晶聚合物和聚亚芳基亚砜的混合物,由这些混合物制成的泡沫,其制备方法及其用途

    公开(公告)号:US5948830A

    公开(公告)日:1999-09-07

    申请号:US793216

    申请日:1997-05-02

    摘要: The novel blend comprises:(A) from 1 to 99% by weight of at least one thermotropic-liquid-crystalline polyester and/or polyesteramide and(B) from 1 to 99% by weight of at least one sulfoxide group-containing polymer,in each case based on the total weight .SIGMA.�(A)+(B)!. Component (B) is a linear and/or branched polymer having a mean molecular weight M.sub.w in the range from 4,000 to 200,000 comprising recurring units of the formula �--F--S).sub.c --(F--SO).sub.d --!, where F, independently of one another, are simple or para-, meta- or ortho-linked arylene systems having 6 to 18 carbon atoms, preferably phenylene, naphthylene or biphenylene, where the sum c+d is 1, with the proviso that d is always .gtoreq.0.70. Component (A) is a thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w in the range from 10,000 to 200,000 g/mol and a transition temperature of >250.degree. C., and/or an amorphous thermotropic liquid-crystalline polymer having a mean molecular weight M.sub.w of from 10,000 to 200,000 g/mol and a glass transition temperature of >160.degree. C.

    摘要翻译: PCT No.PCT / EP95 / 03082 Sec。 371日期:1997年5月2日 102(e)日期1997年5月2日PCT提交1995年8月2日PCT公布。 公开号WO96 / 05252 日期1996年2月22日该新型共混物包含:(A)1至99重量%的至少一种热致液晶聚酯和/或聚酯酰胺和(B)1至99重量%的至少一种亚砜 基于含有基团的聚合物,在每种情况下基于总重量SIGMA [(A)+(B)]。 组分(B)是具有4,000至200,000范围内的平均分子量Mw的线性和/或支化聚合物,其包含式[-FS] c-(F-SO)d - ]的重复单元,其中F独立地 是具有6至18个碳原子的简单或对位,间位或邻位的亚芳基系,优选亚苯基,亚萘基或亚联苯,其中总和c + d为1,条件是d总是> = 0.70。 组分(A)是平均分子量Mw在10,000至200,000g / mol,转变温度> 250℃的热致液晶聚合物,和/或具有 平均分子量Mw为10,000至200,000g / mol,玻璃化转变温度> 160℃。

    Piezoelectric gas sensor
    7.
    发明授权
    Piezoelectric gas sensor 失效
    压电式气体传感器

    公开(公告)号:US06171867B2

    公开(公告)日:2001-01-09

    申请号:US08378838

    申请日:1995-01-26

    IPC分类号: G01N3300

    摘要: The invention relates to a sensor comprising a piezoelectric crystal with a polyarylene thioether-containing coating, the coating containing at least one polyarylene system having repeating units of the formula I, —[(Ar1)n—X]m—[(Ar2)i—Y]j—[(Ar3)k—Z]l—[(Ar4)o—W]p—  (I) which contain at least one thioether group, in which Ar1, Ar2, Ar3 and Ar4 are identical or different aryl systems having from 6 to 18 carbon atoms, W, X, Y and Z are identical or different linking groups, selected from the group comprising —SO2—, —S—, —SO—, —O—, —CO—, —CO2—, alkylene or alkylidene having from 1 to 6 carbon atoms and —NR1—, where R1 is an alkyl or alkylide group having from 1 to 6 carbon atoms and at least one linking group must be —S—, n, m, i, j, k, l, o, p are, equal or different, integers zero, 1, 2, 3 or 4, their sum having to be at least 2, and to the use thereof.

    摘要翻译: 本发明涉及包含具有聚亚芳基硫醚的涂层的压电晶体的传感器,该涂层含有至少一个具有式I重复单元的聚亚芳基体系,其含有至少一个硫醚基团,其中Ar 1,Ar 2,Ar 3和Ar 4 是具有6至18个碳原子的相同或不同的芳基系统,W,X,Y和Z是相同或不同的连接基团,选自-SO 2 - , - S - , - SO - , - O - 具有1至6个碳原子的-CO-,-CO 2 - ,亚烷基或亚烷基和-NR 1 - ,其中R 1是具有1至6个碳原子和至少一个连接基团的烷基或亚烷基基团必须是-S-,n ,m,i,j,k,l,o,p等于或不同,整数0,1,2,3或4,它们的和必须至少为2,并且与其使用有关。