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    • 3. 发明公开
    • LAMINATED GLASS INTERMEDIATE FILM, LAMINATED GLASS AND LAMINATED GLASS INTERMEDIATE FILM PRODUCTION METHOD
    • 层压玻璃中间膜,层压玻璃和层压玻璃中间膜生产方法
    • EP3202734A1
    • 2017-08-09
    • EP15847460.1
    • 2015-09-30
    • Sekisui Chemical Co., Ltd.
    • YOSHIDA, ShougoNAKAYAMA, KazuhikoKAWATE, Hiroshi
    • C03C27/12B32B3/26B32B7/02B32B17/10
    • B32B17/10577B32B3/30B32B7/02B32B17/10036B32B17/10587B32B17/10688B32B17/10761B32B27/08B32B27/22B32B27/30B32B27/306B32B27/42B32B2250/02B32B2250/40B32B2307/102B32B2307/308B32B2307/538B32B2307/732B32B2605/00B32B2605/006
    • The present invention aims to provide an interlayer film for a laminated glass which has a multilayer structure including two or more resin layers laminated together and can prevent optical distortion even at high temperatures, a laminated glass including the interlayer film for a laminated glass, and a method of producing the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, the interlayer film including: two or more resin layers laminated together, one resin layer having a surface with a ratio (Rz/Sm) of a ten-point average roughness Rz (µm) to an average interval Sm (µm) of projections and recesses of 0.0018 or less as measured in conformity with JIS B-0601(1994) in the following manner: a laminated glass is produced using two clear glass sheets conforming to JIS R3202(1996) and the interlayer film; the interlayer film is peeled away from the clear glass sheets after the laminated glass is cooled with liquid nitrogen; the one resin layer is peeled away from another resin layer that is in direct contact with the one resin layer; and the Rz and Sm of the surface of the one resin layer on the side having been in contact with the other resin layer are measured.
    • 本发明的目的在于提供一种夹层玻璃用中间膜,该夹层玻璃用中间膜具有多层结构,该多层结构包括层叠在一起的两层以上的树脂层,并且即使在高温下也能够防止光学变形,包含夹层玻璃用中间膜的夹层玻璃和 制造夹层玻璃用中间膜的方法。 本发明涉及一种夹层玻璃用中间膜,所述中间膜包括两层以上的树脂层层压在一起,所述一层树脂层的表面具有十点平均粗糙度Rz(μm)的比率(Rz / Sm) )根据JIS B-0601(1994)按照JIS B-0601(1994)测定的凸部和凹部的平均间隔Sm(μm):按照JIS R3202(1996),使用2片透明玻璃板制作夹层玻璃 )和中间膜; 夹层玻璃用液氮冷却后,将中间膜从透明玻璃板上剥离下来, 将一个树脂层从与一个树脂层直接接触的另一个树脂层上剥离; 测量一个树脂层的与另一树脂层接触一侧的表面的Rz和Sm。
    • 5. 发明公开
    • POLYVINYL ACETAL SHEET AND PROCESS FOR PRODUCTION THEREOF
    • POLYVINYLACETALFOLIE UND HERSTELLUNGSVERFAHRENDAFÜR
    • EP2083039A1
    • 2009-07-29
    • EP07791511.4
    • 2007-07-27
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • TSUJI, TsuyoshiKOHSAKA, MasanobuYOSHII, ShigeharuSAITO, TomooMASHIKO, Yoshihiro
    • C08J5/18B29C47/38B29C59/04B32B27/30C03C27/12C08F8/28C08J3/12C08L29/14B29K59/00
    • C08J5/18B29C47/0021B29C47/0038B29C47/1081B29K2105/0038B32B17/10577B32B17/10761C08F8/48C08J2329/14Y10T428/3163C08F8/28C08F16/06
    • Provided are a polyvinyl acetal sheet which is excellent in adhesion to glass, easy in control of adhesion, little colored, highly transparent and excellent in penetration resistance even under high-temperature conditions when the sheet is used for laminated glass or the like, a process for its production and a process for producing polyvinyl acetal particles used for the sheet.
      The polyvinyl acetal sheet is produced by molding polyvinyl acetal particles into a sheet with a degree of acetalization of from 75.0 to 84.0 mass% and with a porosity of from 60 to 85%. The polyvinyl acetal particles are preferably produced by an acetalization reaction of 100 parts by mass of a polyvinyl alcohol and from 40 to 75 parts by mass of an aldehyde in the presence of an acid catalyst at a reaction temperature of from 20 to 60°C, and the acetalization reaction comprises supplying the polyvinyl alcohol, the aldehyde and the acid catalyst to a reactor to bring about acetalization, discharging a reaction mixture from the reactor after the degree of acetalization of the produced polyvinyl acetal has reached 13 mass%, and subjecting the discharged reaction mixture to an aging reaction.
    • 提供一种聚乙烯醇缩醛片,其在与玻璃的粘合性方面优异,即使在片材用于夹层玻璃等时,也可以在高温条件下,易于控制粘合力,少着色,高透明性和优异的耐渗透性, 用于制造用于片材的聚乙烯醇缩醛颗粒的方法。 聚乙烯醇缩醛片通过将聚乙烯醇缩醛粒子成型为缩醛化度为75.0〜84.0质量%,孔隙率为60〜85%的片材来制造。 聚乙烯醇缩醛粒子优选通过在酸催化剂的存在下,在20〜60℃的反应温度下,通过100质量份聚乙烯醇和40〜75质量份的醛的缩醛化反应, 并且缩醛化反应包括将聚乙烯醇,醛和酸催化剂供给到反应器中以进行缩醛化,在所生产的聚乙烯醇缩醛的缩醛化程度达到13质量%后,将反应混合物从反应器中排出, 排出的反应混合物进行老化反应。