Process for preparation of methacrylimide group-containing polymer
    3.
    发明授权
    Process for preparation of methacrylimide group-containing polymer 失效
    制备含甲基丙烯酰亚胺基团的聚合物的方法

    公开(公告)号:US4940778A

    公开(公告)日:1990-07-10

    申请号:US220617

    申请日:1988-07-18

    CPC分类号: C08F8/48 C08F8/00

    摘要: A methacrylimide group-containing polymer having improved moldability as well as good heat resistance and transparency is prepared by heat treating a methacrylimide group-containing polymer having imide ring structural units of the formula: ##STR1## wherein R represents a hydrogen, an alkyl, cycloalkyl, aryl, alkaryl, aralkyl or allyl group 1 to 20 carbon atoms, at a temperature of 190 to 350 C. in the presence of a tertiary amine of the formula: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 independently represent an alkyl, aryl, aralkyl or alkaryl group having 1 to 20 carbon atoms, and two of R.sub.1, R.sub.2 and R.sub.3 may be linked to form a ring together with the nitrogen atom.

    摘要翻译: 通过热处理具有下式的酰亚胺环结构单元的甲基丙烯酰亚胺基聚合物制备具有改进的成型性以及良好的耐热性和透明性的含甲基丙烯酰亚胺基的聚合物:其中R表示氢,烷基,环烷基 ,芳基,烷芳基,芳烷基或具有1至20个碳原子的烯丙基,在190-350℃的温度下,在下式的叔胺存在下,其中R 1,R 2和R 3独立地表示烷基,芳基, 具有1至20个碳原子的芳烷基或烷芳基,并且R 1,R 2和R 3中的两个可以与氮原子一起形成环。

    Light transmitting fiber
    5.
    发明授权
    Light transmitting fiber 失效
    光传输光纤

    公开(公告)号:US4804259A

    公开(公告)日:1989-02-14

    申请号:US854615

    申请日:1986-04-22

    摘要: Disclosed is an improved light transmitting fiber comprising a transparent inorganic substance or organic polymeric material as a core component and a methacrylate polymer as a cladding component. The methacrylate polymer is a methacrylimide-containing fluoroalkyl methacrylate polymer comprising (A) 2 to 98 weight % of methacrylimide units of formula (I): ##STR1## wherein R represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, (B) 98 to 2 weight % of structural units derived from a fluoroalkyl methacrylate monomer, and (C) 0 to 50 weight % of structural units derived from a monomer copolymerizable with the monomer (B).

    摘要翻译: 公开了一种改进的透光纤维,其包含作为核心组分的透明无机物质或有机聚合物材料和作为包覆组分的甲基丙烯酸酯聚合物。 甲基丙烯酸酯聚合物是含甲基丙烯酰亚胺的甲基丙烯酸氟代烷基酯聚合物,其包含(A)2至98重量%的式(I)的甲基丙烯酰亚胺单元:其中R表示氢原子或具有1至20个碳原子的烃基 原子,(B)98〜2重量%的衍生自甲基丙烯酸氟烷基酯单体的结构单元,(C)0〜50重量%的衍生自可与单体(B)共聚的单体的结构单元。

    Methacrylate resin composition and process for its preparation
    7.
    发明授权
    Methacrylate resin composition and process for its preparation 失效
    甲基丙烯酸酯树脂组合物及其制备方法

    公开(公告)号:US4745159A

    公开(公告)日:1988-05-17

    申请号:US5423

    申请日:1987-01-20

    IPC分类号: C08F8/32 C08F8/48 C08F8/30

    CPC分类号: C08F8/48 C08F2800/20

    摘要: A methacrylate resin composition comprising a methacrylate resin containing methacrylimide units of the following formula: ##STR1## wherein R is a hydrogen atom or an aliphatic, alicyclic or aromatic hydrocarbon group having from 1 to 20 carbon atoms, and having a yellowness index (YIs) of at most 3 as measured in the form of a solution of the heated resin composition and a total light transmittance of from 89 to 95%.

    摘要翻译: 一种甲基丙烯酸酯树脂组合物,其包含含有下式的甲基丙烯酰亚胺单元的甲基丙烯酸酯树脂:其中R是氢原子或具有1至20个碳原子的脂族,脂环族或芳族烃基,并且具有黄色指数 (YIs)以加热的树脂组合物的溶液的形式测量为至多3,总透光率为89-95%。

    Process for preparing methacrylimide-containing polymers
    9.
    发明授权
    Process for preparing methacrylimide-containing polymers 失效
    制备含甲基丙烯酰亚胺的聚合物的方法

    公开(公告)号:US4816524A

    公开(公告)日:1989-03-28

    申请号:US857163

    申请日:1986-04-29

    IPC分类号: C08F8/32

    CPC分类号: C08F8/32

    摘要: Methacrylimide-containing polymers are continuously produced by introducing 10 to 60 wt. % of an inert solvent, 90 to 40 wt. % of methacrylic acid, a methacrylic acid ester or a monomer mixture comprising at least 50 wt. % of methacrylic acid or a methacrylic acid ester, and a radical polymerization initiator and a molecular weight modifier into a polymerization reaction zone, converting at least 80 wt. % of the charged monomer to a polymer at 60.degree.-170.degree. C., adding a compound represented by the formula:R--NH.sub.2wherein R represents a hydrogen atom, an alkyl group having 1-12 carbon atoms, a cycloalkyl group having 7-11 carbon atoms or an aryl group having 6-10 carbon atoms,to the polymerization reaction liquid, carrying out reaction of the resulting mixture at 150.degree. to 300.degree. C. in an imidization reaction zone, and finally separating volatile substances from the reaction fluid.

    摘要翻译: 含有甲基丙烯酰胺的聚合物通过引入10至60wt。 %的惰性溶剂,90〜40wt。 %的甲基丙烯酸,甲基丙烯酸酯或包含至少50wt。 %的甲基丙烯酸或甲基丙烯酸酯,以及自由基聚合引发剂和分子量调节剂进入聚合反应区,将至少80wt。 加入到60℃-170℃的聚合物的%,加入由式R-NH 2表示的化合物,其中R表示氢原子,具有1-12个碳原子的烷基,具有7个 -11个碳原子或具有6-10个碳原子的芳基,在聚合反应液中,在酰亚胺化反应区中将所得混合物在150-300℃下进行反应,最后从反应中分离出挥发性物质 流体。