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    Process for the living anionic polymerization of alkyl (methacrylic) monomers using a novel initiator system
    2.
    发明授权
    Process for the living anionic polymerization of alkyl (methacrylic) monomers using a novel initiator system 失效
    使用新型引发剂体系进行烷基（甲基丙烯酸）单体活性阴离子聚合的方法

    公开(公告)号：US5973086A

    公开(公告)日：1999-10-26

    申请号：US774035

    申请日：1996-12-27

    申请人： Durairaj Baskaran ,  Swaminathan Sivaram

    发明人： Durairaj Baskaran ,  Swaminathan Sivaram

    IPC分类号： C08F4/10 ,  C08F4/56 ,  C08F120/12 ,  C08F120/14 ,  C08F20/14

    CPC分类号： C08F120/12 ,  C08F120/14 ,  C08F4/565

    摘要： A process for the living anionic polymerization of alkyl(meth)acrylic monomers, involving polymerizing the monomers in the presence of an initiator comprising a carbanion and a metal or nonmetal salt of perchloric acid. The initiator has the formula (I): ##STR1## wherein R.sub.1 =a linear or branched alkyl group having one to six carbon atoms, R.sub.2 =a phenyl or alkyl group having one to six carbon atoms, R.sub.3 =a phenyl or an ester group and M.sup.+ is an alkali, alkaline earth metal or quarternary ammonium cation containing 1-8 carbon atoms in an alkyl group thereof.

    摘要翻译： 涉及（甲基）丙烯酸烷基酯单体的活性阴离子聚合的方法，包括在包含碳负离子和高氯酸的金属或非金属盐的引发剂存在下聚合单体。 引发剂具有式（I）：其中R1 =具有1-6个碳原子的直链或支链烷基，R2 =苯基或具有1-6个碳原子的烷基，R3 =苯基或酯基，M +是 在其烷基中含有1-8个碳原子的碱金属，碱土金属或季铵阳离子。

    CURABLE RESIN COMPOSITION, CURED PRODUCT, DIFFRACTIVE OPTICAL ELEMENT, MULTILAYER DIFFRACTIVE OPTICAL ELEMENT, AND OXIDE NANOPARTICLES
    5.
    发明公开
    CURABLE RESIN COMPOSITION, CURED PRODUCT, DIFFRACTIVE OPTICAL ELEMENT, MULTILAYER DIFFRACTIVE OPTICAL ELEMENT, AND OXIDE NANOPARTICLES 审中-公开

    公开(公告)号：US20230322981A1

    公开(公告)日：2023-10-12

    申请号：US18148031

    申请日：2022-12-29

    申请人： FUJIFILM Corporation

    发明人： Masahiro TAKATA ,  Masashi ONO ,  Naozumi SHIRAIWA

    IPC分类号： C08F120/12 ,  C08K3/22

    CPC分类号： C08F120/12 ,  C08K3/22 ,  C08K2003/2213 ,  C08K2003/2231

    摘要： An object of the present invention is to provide a cured product which is suitable as a material for a layer of low refractive index in a multilayer diffractive optical element, can exhibit a desired chromatic aberration reducing effect over a near-infrared wavelength region to a shortwave infrared wavelength region in a case of being used in the multilayer diffractive optical element, and can exhibit high transmittance in this wavelength range; a curable resin composition suitable for obtaining this cured product; and a diffractive optical element and a multilayer diffractive optical element including this cured product. Provided are a curable resin composition which includes oxide nanoparticles including indium and cerium, a monofunctional or higher functional (meth)acrylate compound, and a dispersant; a cured product formed of the curable resin composition; a diffractive optical element and a multilayer diffractive optical element; and oxide nanoparticles used in this composition.

    Process for preparing (meth)acrylates
    8.
    发明授权
    Process for preparing (meth)acrylates 有权

    公开(公告)号：US09688601B2

    公开(公告)日：2017-06-27

    申请号：US14924018

    申请日：2015-10-27

    申请人： Evonik Roehm GmbH

    发明人： Joachim Knebel ,  Ralf Merbach ,  Guido Protzmann ,  Klaus Gottmann ,  John Hirsh ,  Gerold Schmitt ,  Dieter Tessmer ,  Wilhelm Karnbrock ,  Wolfgang Klesse ,  Volker Kerscher

    IPC分类号： C07C67/03 ,  C08F20/18 ,  C08F120/12

    CPC分类号： C07C67/03 ,  C08F20/18 ,  C08F120/12 ,  C07C69/54

    摘要： Process for preparing (meth)acrylates of the formula (I) CH2═C(R1)—CO—O—R2  (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2═C(R1)—CO—OR3  (II) with an alcohol of the formula (III) HO—R2  (III) in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25° C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

    High temperature heat resistant acrylics method of manufacture
    10.
    发明授权
    High temperature heat resistant acrylics method of manufacture 失效
    耐高温耐热丙烯酸制造方法

    公开(公告)号：US5319043A

    公开(公告)日：1994-06-07

    申请号：US931763

    申请日：1992-08-18

    申请人： Jyi-Sheng J. Shen

    发明人： Jyi-Sheng J. Shen

    IPC分类号： C08F220/12 ,  C08F222/40 ,  C08F120/12

    CPC分类号： C08F220/12

    摘要： A high temperature heat resistant methacrylate-maleimide copolymer having at least 90% by weight methyl methacrylate monomer and up to about 10% by weight maleimide monomer to form a clear, weather-resistant copolymer having glass transition temperatures from about 105.degree. C. to about 131.degree. C. and a method of manufacture of the copolymers through an extremely high conversion bulk polymerization process.

    摘要翻译： 具有至少90重量％甲基丙烯酸甲酯单体和至多约10重量％马来酰亚胺单体的高温耐热甲基丙烯酸酯 - 马来酰亚胺共聚物以形成透明耐候性共聚物，其玻璃化转变温度为约105℃至约 131℃和通过极高转化本体聚合方法制备共聚物的方法。