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    METHOD FOR PREPARING VINYL CYAN COMPOUND-CONJUGATED DIENE COMPOUND-AROMATIC VINYL COMPOUND GRAFT COPOLYMER AND THERMOPLASTIC RESIN COMPOSITION COMPRISING GRAFT COPOLYMER
    6.
    发明公开
    METHOD FOR PREPARING VINYL CYAN COMPOUND-CONJUGATED DIENE COMPOUND-AROMATIC VINYL COMPOUND GRAFT COPOLYMER AND THERMOPLASTIC RESIN COMPOSITION COMPRISING GRAFT COPOLYMER 审中-公开

    公开(公告)号：EP3696201A1

    公开(公告)日：2020-08-19

    申请号：EP19880937.8

    申请日：2019-10-21

    申请人： LG Chem, Ltd.

    发明人： SUK, Jae Min ,  KIM, Yoo Vin ,  KIM, Young Min ,  LEE, Jin Hyoung ,  HAN, Sujeong ,  JEONG, Young Hwan ,  PARK, Changhong ,  HEO, Jaewon

    IPC分类号： C08F279/02 ,  C08F6/18

    摘要： The present invention relates to a method of preparing a graft copolymer and a thermoplastic resin composition including the graft copolymer. More specifically, the present invention relates to a method of preparing a graft copolymer, the method including a step of performing coagulation by adding an acid coagulant to 100 parts by weight (based on solids) of graft copolymer latex prepared by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto conjugated diene rubber latex; and a step of performing coagulation once more by adding a salt coagulant thereto.
    According to the present invention, when the method is used to prepare a graft copolymer, coagulation efficiency may be improved and the gloss of the prepared graft copolymer may be increased. In addition, since a b-value measured using a Hunter lab colorimeter and a b-value measured after being left at 250 °C for 15 minutes are low, the graft copolymer may have excellent color characteristics. In addition, since heating loss is low and scorch time is long, the graft copolymer may have excellent processing characteristics.

    Grain aggregate and producing method thereof, and light-diffusing agent
    7.
    发明公开
    Grain aggregate and producing method thereof, and light-diffusing agent 审中-公开
    粮食集团，Verfahren zu dessen Herstellung und lichtstreuendes Mittel

    公开(公告)号：EP1153959A3

    公开(公告)日：2004-11-24

    申请号：EP01401149.8

    申请日：2001-05-03

    申请人： Nippon Shokubai Co., Ltd.

    发明人： Iriguchi, Jiro ,  Yamamoto, Yasuhiro ,  Shimizu, Shuji ,  Inoue, Masafumi ,  Oishi, Hideki

    IPC分类号： C08J3/12 ,  C08F6/18

    CPC分类号： G02B5/0226 ,  C08F6/18 ,  C08J3/12 ,  C08J2333/12 ,  G02B5/0268 ,  G02B5/0278 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2998

    摘要： A grain aggregate is formed by bonding a plurality of cross-linking polymeric grains via a substance (binder) having a reactive functional group, and alternatively, the grain aggregate is formed by bonding at least two different types of a plurality of grains, thus providing the grain aggregate having the improved heat resistance, solvent resistance, strength and light-diffusing properties. Further, a light-diffusing agent made up of the grain aggregate has the improved light-diffusing properties. Therefore, when applying a light-diffusing mold article including the light-diffusing agent to, for example, a backlight of a liquid crystal display device, high brightness and a wide angle of visibility can be attained. Further, by spray drying of a dispersion liquid containing the grain aggregate, the grain aggregate can be produced with ease.

    摘要翻译： 通过经由具有反应性官能团的物质（粘合剂）将多个交联聚合物颗粒结合而形成颗粒聚集体，或者，通过粘结至少两种不同类型的多个颗粒形成颗粒聚集体，从而提供 所述颗粒聚集体具有改善的耐热性，耐溶剂性，强度和光扩散性能。 此外，由粒状集合体构成的光扩散剂具有改善的光扩散性。 因此，当将例如包含光扩散剂的光扩散模制品应用于例如液晶显示装置的背光源时，可以获得高亮度和广视角。 此外，通过喷雾干燥含有颗粒聚集体的分散液，可以容易地制备颗粒聚集体。

    Method of isolating copolymers of vinylpyridine and styrene
    10.
    发明公开
    Method of isolating copolymers of vinylpyridine and styrene 失效
    Verfahren zur Isolierung von Copolymeren von Vinylpyridin和Styrol。

    公开(公告)号：EP0347135A1

    公开(公告)日：1989-12-20

    申请号：EP89305891.7

    申请日：1989-06-12

    申请人： EASTMAN KODAK COMPANY (a New Jersey corporation)

    发明人： Chang, Yeong-Ho c/o EASTMAN KODAK COMPANY ,  Jenkins, Waylon Lewellyn c/o EASTMAN KODAK COMPANY

    IPC分类号： C08F6/18 ,  C08F226/06

    CPC分类号： C08F6/18 ,  C08L39/08

    摘要： Disclosed is a process for isolating copolymers comprising repeating units from 2-vinylpyridine and styrene by drowning the reaction emulsion into an acetic acid solution or by adding an acetic acid/water solution to the reaction emulsion. The copolymer isolated by this technique filters and washes much more rapidly than the copolymer isolated using sodium chloride, and the wet cake has a high solids content.

    摘要翻译： 公开了通过将反应乳液浸入乙酸溶液中或通过向反应乳液中加入乙酸/水溶液来分离包含2-乙烯基吡啶和苯乙烯的重复单元的共聚物的方法。 通过该技术分离的共聚物比使用氯化钠分离的共聚物更快速地洗涤和洗涤，并且湿饼具有高固体含量。