会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Polymeric color indicators and a method of their preparation
    • 聚合颜色指示剂及其制备方法
    • US4166804A
    • 1979-09-04
    • US842273
    • 1977-10-14
    • Miroslav BlehaZdenek PlichtaEva VotavovaJaroslav Kalal
    • Miroslav BlehaZdenek PlichtaEva VotavovaJaroslav Kalal
    • G01N31/22G01N21/08C08F8/30C08J9/00
    • G01N31/221
    • Polymeric color pH indicators are prepared which are insoluble in the measured aqueous medium and show a certain range of color change. These polymeric indicators are the product of copolymerization of a hydrophilic comonomer, selected from esters, amides and N-substituted amides of acrylic and methacrylic acid, with 0.1- 30 wt.% of a comonomer. The comonomer forms the pH-indicating color center by a subsequent coupling with a suitable diazonium salt or a passive component. Vinylic monomers comprising an aromatic system in the molecule are suitable as the functional comonomers. The indicators are prepared by radical copolymerization of the comonomers either in a suspension or in a solution, followed by the subsequent coupling with a diazonium compound, or diazotizing and coupling with a passive component, to obtain the pH-indicating sites of polymer. The product is in the form of small spherical macroporous particles suitable for pH indication in flow-through column processes, in small volumes, or on a microscope stage, or in the form of a solution applicable as a paint and indicating the pH of vessels, reactors, etc. coated therewith, or useful for application to inert carriers.
    • 制备聚合物颜色pH指示剂,其不溶于测量的水性介质并显示一定范围的颜色变化。 这些聚合物指示剂是选自丙烯酸和甲基丙烯酸的酯,酰胺和N-取代的酰胺的亲水共聚单体与0.1-30重量%的共聚单体共聚的产物。 共聚单体通过与合适的重氮盐或无源组分的后续偶联形成pH-指示颜色中心。 分子中包含芳族体系的乙烯基单体适用作为功能性共聚单体。 指示剂通过在悬浮液或溶液中共聚单体的自由基共聚制备,随后与重氮化合物偶联,或与无源组分重氮化并偶联,得到聚合物的pH指示位点。 该产品是适于在流通柱方法中以小体积或在显微镜载物台上的pH指示的小球形大孔颗粒的形式,或以可用作涂料的溶液形式并指示血管的pH值, 反应器等,或者可用于惰性载体。
    • 4. 发明授权
    • Monomers and polymers containing the reactive aromatic system and method
for their preparation
    • 含有反应性芳香体系的单体和聚合物及其制备方法
    • US4127732A
    • 1978-11-28
    • US625317
    • 1975-10-23
    • Miroslav BlehaZdenek Plichta
    • Miroslav BlehaZdenek Plichta
    • C08F8/00C07C67/00C07C231/00C07C231/02C07C231/12C07C233/43C07C239/00C07C271/00C07C301/00C07C303/34C07C303/40C07C307/02C08F8/12C08F20/00C08F20/34C08F290/00C08F299/00C07C69/54
    • C08F20/34
    • The invention relates to monomers of the general formula I with a reactive aromatic system based on p-phenylenediamine derivatives:Ch.sub.2 .dbd.cr.sup.1 --co--(o--ch.sub.2 --ch.sub.2).sub.x --NR.sup.2 --Ar--NH--R.sup.3 (I),where R.sup.1 is H or CH.sub.3, R.sup.2 is C.sub.1 -C.sub.6 alkyl, R.sup.3 is acyl, carboxylic group or sulfonic group. It further relates to methods for preparation of such monomers by the reaction of p-H.sub.2 NC.sub.6 H.sub.4 N(Et)CH.sub.2 CH.sub.2 OH or p-H.sub.2 NC.sub.6 H.sub.4 N(CH.sub.2 CH.sub.2 OH).sub.2 derivatives with blocked NH.sub.2 groups with chlorides of unsaturated organic acids or by nitrosation, reducing and above mentioned acylation of N-alkylaniline derivatives. It further relates to polymers prepared by polymerization or copolymerization of monomers I, which consist of structural units IV: ##STR1## where R.sup.1, R.sup.2, R.sup.3, Ar and x have the above given meaning, and to methods of their preparation. These methods include the free-radical polymerization or copolymerization with acrylic and methacrylic monomers, as acrylamide, methacrylamide, acrylic and methacrylic acids and their esters, vinyl monomers, as butadiene, isoprene, and styrene, bifunctional monomers, as divinylbenzene, methylenebisacrylamide, ethylene glycol dimethacrylate, and with monomers containing OH groups. The polymerization methods further include polymerization in the presence of polymer solvents and precipitants and a crosslinking copolymerization in a dispersion medium which provides porous polymer particles with large inner surface area. Another objective of the invention are polymers containing structural units V: ##STR2## where R.sup.1, R.sup.2, Ar and x have the above given meaning and R.sup.3, R.sup.4 are H, C.sub.1 -C.sub.4 alkyl or CH.sub.2 COOH or where R.sup.3 + R.sup.4 means .dbd. N-- group, and methods for their preparation from polymers with units IV consisting in acid hydrolysis and subsequent modification, e.g. with chloroacetic acid, formaldehyde or diazotizing and coupling with a suitable passive component.
    • 本发明涉及具有基于对苯二胺衍生物的反应性芳族体系的通式I的单体: