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1346 条记录 (耗时 0.035 秒)

    Proppant material and method for producing same
    31.
    发明授权
    Proppant material and method for producing same 有权

    公开(公告)号：US10053620B2

    公开(公告)日：2018-08-21

    申请号：US14786642

    申请日：2014-05-13

    申请人： OTKRYTOE AKTSYONERNOE OBSCHESTVO “ROSNEFT OIL COMPANY”

    发明人： Vladimir Vladimirovich Afanasiev ,  Sergey Anatolievich Alkhimov ,  Nataliya Borisovna Bespalova ,  Egor Vladimirovich Shutko ,  Tatyana Modestovna Yumasheva

    IPC分类号： C09K8/60 ,  C09K8/528 ,  C09K8/80 ,  C08F220/10

    CPC分类号： C09K8/80 ,  C08F220/10

    摘要： The material for proppant and method for producing the same relate to the chemistry of high-molecular weight compounds, and more particularly, to polymer materials with high requirements for physical and mechanical properties, for instance, for the production of proppants, i.e., propping granules, used in the oil and gas production by a method of hydraulic fracturing of formation. The technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant material providing for a compressive strength of at least 150 MPa at a temperature of not less than 100° C. The method consists in the following. A mixture of oligocyclopentadienes is obtained by heating dicyclopentadiene (DCPD) to a temperature of 150-220° C. and holding at this temperature for 15-360 minutes. The oligomerization of dicyclopentadiene occurs. The mixture of oligomers is cooled down to 20-50° C., and polymer stabilizers, radical initiators, methacrylates and a catalyst are sequentially added thereto. The resultant polymer matrix is heated up to a temperature of 50-340° C. and is held at this temperature for 1-360 minutes, and thereafter is cooled down to room temperature. A metathesis polymerization (MP) and radical polymerization (RP) cross-linkage of the mixture of oligocyclopentadienes with methacrylic esters occurs.

    (METH) ACRYLIC BLOCK COPOLYMER AND PROCESS FOR PRODUCING THE SAME
    40.
    发明申请
    (METH) ACRYLIC BLOCK COPOLYMER AND PROCESS FOR PRODUCING THE SAME 有权
    （METH）丙烯酸嵌段共聚物及其制备方法

    公开(公告)号：US20160002378A1

    公开(公告)日：2016-01-07

    申请号：US14767676

    申请日：2014-03-05

    申请人： KURARAY CO., LTD.

    发明人： Seiya SHIMIZU ,  Hirotsugu IDA

    IPC分类号： C08F220/10

    CPC分类号： C08F220/10 ,  C08F4/52 ,  C08F220/20 ,  C08F297/026 ,  C08F299/00 ,  C08F2222/1013 ,  C09D153/00 ,  C09J153/00 ,  C08F220/14 ,  C08F2220/1825

    摘要： [Object] Materials may be used as adhesives and the like which may be cured with active energy rays, and cured products may be easily removed and separated from substrates by a method such as a hygrothermal degradation method as required such as when the products are to be disposed of.[Solution] A (meth)acrylic block copolymer includes a methacrylic polymer block (A) having at least one or more active energy ray curable groups represented by General Formula (1) below, and a (meth)acrylic polymer block (B) having no active energy ray curable groups, (wherein R1 is a methyl group, R2 and R3 are each independently a hydrocarbon group having 1 to 6 carbon atoms, and n is an integer of 1 to 5).

    摘要翻译： 材料可以用作可以用活性能量射线固化的粘合剂等，并且固化产物可以通过诸如如果产品所要求的湿热降解方法的方法容易地从基底去除并与基底分离 被处置。 [解决方案]（甲基）丙烯酸系嵌段共聚物包含具有下述通式（1）表示的至少一种以上活性能量射线固化性基团的甲基丙烯酸系聚合物嵌段（A）和（甲基）丙烯酸系聚合物嵌段（B） 没有活性能量射线固化性基团（其中，R1为甲基，R2和R3各自独立地为碳原子数为1〜6的烃基，n为1〜5的整数）。