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    POLYVINYLACETAL RESIN FOR HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL AND HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL
    1.
    发明授权
    POLYVINYLACETAL RESIN FOR HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL AND HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL 有权
    用于热显影光敏材料和热显影光敏材料的聚乙烯醇缩丁醛树脂

    公开(公告)号：EP3123243B1

    公开(公告)日：2017-11-15

    申请号：EP14719205.8

    申请日：2014-03-24

    申请人： Sekisui Chemical Co., Ltd.

    发明人： YAMAUCHI, Kenji ,  MIYAI, Jiro ,  NARUWAKI, Shogo ,  MAEDA, Takayuki

    IPC分类号： G03C1/498 ,  C08F216/38 ,  C08F8/28

    CPC分类号： C08F8/28 ,  C08F2800/10 ,  C08L2205/025 ,  C09D5/26 ,  C09D5/32 ,  C09D129/14 ,  G03C1/49863 ,  C08K13/02 ,  C08F16/06

    摘要： An object of the present invention is to provide: a polyvinyl acetal resin for a heat-developable photosensitive material capable of preventing skinning in the coating process of the photosensitive layer of the heat-developable photosensitive material, preventing deterioration of image characteristics and coloration of the coating solution, and suppressing the occurrence of odor at the time of producing the heat-developable photosensitive material and heat development. The present invention provides a polyvinyl acetal resin for a heat-developable photosensitive material used for a photosensitive layer of the heat-developable photosensitive material, which has a residual acetyl group content of 25 mol % or less, residual hydroxyl group content of 17-35 mol %, polymerization degree of 200 to 3,000, which is obtained by an acetalization of a polyvinyl alcohol mixture containing polyvinyl alcohol resins having different polymerization degrees, the content of the polyvinyl alcohol having a polymerization degree of 600 or less being 50 wt % or higher in the polyvinyl alcohol mixture.

    Resin composition for forming optical waveguide and optical waveguide using the composition
    4.
    发明公开
    Resin composition for forming optical waveguide and optical waveguide using the composition 有权
    使用该组合物形成的光波导用树脂组合物

    公开(公告)号：EP2610275A1

    公开(公告)日：2013-07-03

    申请号：EP12198471.0

    申请日：2012-12-20

    申请人： Nitto Denko Corporation

    发明人： Hirayama, Tomoyuki ,  Hikita, Takami

    IPC分类号： C08F216/38

    CPC分类号： C09D137/00 ,  C08F216/06 ,  C08F216/38 ,  C08F218/08 ,  C09D133/08 ,  C09D133/14 ,  G02B1/048 ,  G02B6/138 ,  G02B2006/12069 ,  G02B2006/12097 ,  G02B2006/1219

    摘要： A resin composition for forming an optical waveguide brings together excellent bending resistance, a low refractive index, and low tackiness suitable for a roll-to-roll (R-to-R) process as a material for forming an optical waveguide, in particular, a material for forming a clad layer. The resin composition for forming an optical waveguide to be used in formation of an optical waveguide includes a polyvinyl acetal compound having a structural unit represented by the following general formula (1) as a main component:

    in the formula (1), R represents an alkyl group having 1 to 3 carbon atoms, and k, m, and n represent ratios of respective repeating units in a main chain and each represent an integer of 1 or more.

    摘要翻译： 用于形成光学波导的树脂组合物汇集优良的耐弯曲性，低折射率，低粘性适合于辊对辊（R到R）过程作为材料用于形成光波导的，特别是 用于形成覆盖层的材料。 用于形成在形成光波导的情况下使用的光波导用树脂组合物包含具有由下述通式（1）作为主要成分的代表的结构单元的聚乙烯醇缩醛化合物：式（1）中，R darstellt在 具有1至3个碳原子的烷基，并且k，m和n表示respectivement重复单元的比例在主链，表示在1以上的整数。

    POLYVINYL ACETAL RESIN
    6.
    发明公开
    POLYVINYL ACETAL RESIN 有权
    Harz auf Basis von聚乙烯缩醛

    公开(公告)号：EP2006308A1

    公开(公告)日：2008-12-24

    申请号：EP07741022.3

    申请日：2007-04-04

    申请人： The Nippon Synthetic Chemical Industry Co., Ltd.

    发明人： SHIBUTANI, Mitsuo The Nippon Synthetic Chemical Industry Co.,Ltd. ,  SAITO, Masahiro The Nippon Synthetic Chemical Industry Co., Ltd.

    IPC分类号： C08F8/48 ,  C08F216/38

    CPC分类号： C08F216/38 ,  C08F8/28 ,  C08F2800/10 ,  C08F8/12 ,  C08F218/08 ,  C08F8/48 ,  C08F16/06

    摘要： Disclosed is a polyvinyl acetal resin having high elastic modulus and excellent solubility in alcohol solvents, which forms an alcohol solution having high transparency. The polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol resin (A) which has 0.1-1.5 mol% of a 1,2-diol structure unit represented by the general formula (1) below and a saponification degree of not less than 95 mol%.

    (1) [In the formula, R 1 , R 2 and R 3 independently represent a hydrogen atom or an organic group; X represents a single bond or a bonded chain; and R 4 , R 5 and R 6 independently represent a hydrogen atom or an organic group.]

    摘要翻译： 公开了一种聚乙烯醇缩醛树脂，其具有高的弹性模量和在醇溶剂中的优异溶解性，其形成具有高透明度的醇溶液。 聚乙烯醇缩醛树脂通过将具有0.1-1.5mol％的由下述通式（1）表示的1,2-二醇结构单元和不低于95mol的皂化度的聚乙烯醇树脂（A） ％。 （1）[式中，R 1，R 2和R 3分别独立地表示氢原子或有机基团。 X表示单键或键合链; R 4，R 5和R 6独立地表示氢原子或有机基团。