公开(公告)号：US08450405B2

公开(公告)日：2013-05-28

申请号：US13595597

申请日：2012-08-27

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： C08K3/10 ,  C08K5/04 ,  B32B5/16 ,  B32B27/00 ,  B32B17/10 ,  B32B27/42 ,  G11B11/105

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

公开(公告)号：US20120003482A1

公开(公告)日：2012-01-05

申请号：US13235097

申请日：2011-09-16

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： B32B17/10 ,  B32B27/36 ,  C08L37/00 ,  B32B27/30

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

摘要翻译： 本发明提供了一种夹层玻璃和夹层玻璃的夹层膜，其通过衰减所述重合效应来防止TL值的坍落度，并适用于在宽的温度范围内显示优异的隔音性能。 一种夹层玻璃用中间膜，其包含增塑剂和聚缩醛树脂，其是平均聚合度为1,000〜3000的聚缩醛树脂和平均聚合度为3,000〜5000的聚缩醛树脂的共混物，其具有 缩醛化度为60〜85摩尔％，乙酰基含量为8〜30摩尔％。 夹层玻璃用中间膜，当检查动态粘弹性时，显示出在30℃以下出现最低温度侧最大损耗角正切的损耗角正切的温度依赖性。

公开(公告)号：US07252887B2

公开(公告)日：2007-08-07

申请号：US10689619

申请日：2003-10-22

申请人： Shinnen Kobata ,  Yoshio Aoshima ,  Hajime Shohi

发明人： Shinnen Kobata ,  Yoshio Aoshima ,  Hajime Shohi

IPC分类号： B32B17/16 ,  G11B11/105

CPC分类号： B32B17/10688 ,  B32B17/10174 ,  B32B17/1055 ,  Y10T428/162 ,  Y10T428/25 ,  Y10T428/252 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/3163

摘要： The object of the present invention is to provide an interlayer film for laminated glass which exerts excellent heat insulation or electromagnetic wave transmittance and which is suitable for producing a laminated glass having excellent fundamental performance characteristics required for the laminated glass, such as transparency, especially good haze, appropriate bond strength between an interlayer film and glass, penetration resistance, impact absorption, weather resistance, and so on. Also, the object of the present invention is to provide a laminated glass produced by using the above-mentioned interlayer film.These objects are realized by the interlayer film for laminated glass comprising an adhesive resin, wherein the average particle diameter of tin-doped indium oxide and/or antimony-doped tin oxide is ranging from 0 to 80 nm, and the number of the tin-doped indium oxide or antimony-doped tin oxide particles with a particle diameter of not less than 100 nm are dispersed not more than 1 per 1 μm2, and also, by a laminated glass produced by interposing said interlayer film for laminated glass between at least a pair of glass sheets having a visible light transmittance rate (Tv) of not less than 65% in the light rays of 380 to 780 nm, a solar radiation transmittance rate (Ts) in the light rays of 300 to 2500 nm of not more than 80% of the mentioned visible light transmittance rate (Tv), the haze value (H) of up to 1.0% and electromagnetic wave shield (ΔdB) of not more than 10 dB in the wavelength of 10 to 2000 MHz.

摘要翻译： 本发明的目的是提供一种层压玻璃用中间膜，其具有优异的隔热性或电磁波透过率，适用于制造夹层玻璃所需的基本性能优异的夹层玻璃，例如透明性，特别好 中间膜与玻璃之间的粘合强度，耐渗透性，冲击吸收性，耐候性等。 另外，本发明的目的是提供一种通过使用上述中间膜制造的夹层玻璃。 这些目的通过包含粘合树脂的夹层玻璃用中间膜来实现，其中掺锡氧化铟和/或锑掺杂氧化锡的平均粒径为0〜80nm，锡 - 粒径不小于100nm的掺杂的氧化铟或锑掺杂的氧化锡颗粒分散在每1mum 2以上1以上，也可以通过将夹层 在380〜780nm的光线中的至少一对玻璃板之间具有不小于65％的可见光透射率（Tv）的玻璃板，在380〜780nm的光线中的太阳辐射透射率（Ts） 300至2500nm，所述可见光透射率（Tv）不超过80％，雾度值（H）高达1.0％，电磁波屏蔽（DeltadB）波长为10以下不大于10dB 至2000 MHz。

公开(公告)号：US06387516B2

公开(公告)日：2002-05-14

申请号：US09269412

申请日：1999-05-14

申请人： Tokushige Shichiri ,  Jiro Miyai ,  Akihiko Bando ,  Kiyofumi Toyama ,  Yoshio Aoshima ,  Isei Sannomiya ,  Minoru Nakajima

发明人： Tokushige Shichiri ,  Jiro Miyai ,  Akihiko Bando ,  Kiyofumi Toyama ,  Yoshio Aoshima ,  Isei Sannomiya ,  Minoru Nakajima

IPC分类号： B32B2742

CPC分类号： B32B17/10688 ,  B32B17/10036 ,  B32B17/10761 ,  C08L29/14 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31627 ,  Y10T428/3163

摘要： The present invention has it for its object to provide an interlayer film for laminated glass and a laminated glass which shows a much decreased extent of blushing of the peripheral region thereof even when placed in a high-humidity atmosphere, without compromise in those fundamental performance characteristics which are required of laminated glass, such as transparency, weather resistance, adhesion and penetration resistance. The present invention is related to an interlayer film for laminated glass comprising a plasticized poly(vinyl acetal) resin and having the haze after 24 hours of immersion is not more than 50% when said interlayer film with a thickness of 0.3 to 0.8 mm is immersed in water at 23° C.

摘要翻译： 本发明的目的是提供一种夹层玻璃用中间膜和夹层玻璃，其即使在高湿度气氛中放置的情况下也显示出其周边区域的白化程度大大降低，而不影响那些基本性能特性 这是夹层玻璃所需要的，例如透明性，耐候性，粘合性和耐渗透性。 本发明涉及一种包含塑化聚（乙烯醇缩醛）树脂的夹层玻璃用中间膜，浸渍24小时后的雾度不超过50％，当所述厚度为0.3至0.8mm的中间膜浸没时 在23℃的水中

公开(公告)号：US08039536B2

公开(公告)日：2011-10-18

申请号：US12950526

申请日：2010-11-19

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： C08K3/10 ,  D06M15/693 ,  B32B5/16 ,  B32B17/10 ,  B32B27/42 ,  G11B11/105

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

摘要翻译： 本发明提供了一种夹层玻璃和夹层玻璃的夹层膜，其通过衰减所述重合效应来防止TL值的坍落度，并适用于在宽的温度范围内显示优异的隔音性能。 一种夹层玻璃用中间膜，其包含增塑剂和聚缩醛树脂，其是平均聚合度为1,000〜3000的聚缩醛树脂和平均聚合度为3,000〜5000的聚缩醛树脂的共混物，其具有 缩醛化度为60〜85摩尔％，乙酰基含量为8〜30摩尔％。 夹层玻璃用中间膜，当检查动态粘弹性时，显示出在30℃以下出现最低温度侧最大损耗角正切的损耗角正切的温度依赖性。

公开(公告)号：US20080032138A1

公开(公告)日：2008-02-07

申请号：US11869659

申请日：2007-10-09

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： B32B17/10 ,  C08K5/09

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

摘要翻译： 本发明提供了一种夹层玻璃和夹层玻璃的夹层膜，其通过衰减所述重合效应来防止TL值的坍落度，并适用于在宽的温度范围内显示优异的隔音性能。 一种夹层玻璃用中间膜，其包含增塑剂和聚缩醛树脂，其是平均聚合度为1,000〜3000的聚缩醛树脂和平均聚合度为3,000〜5000的聚缩醛树脂的共混物，其具有 缩醛化度为60〜85摩尔％，乙酰基含量为8〜30摩尔％。 夹层玻璃用中间膜，当检查动态粘弹性时，显示出在30℃以下出现最低温度侧最大损耗角正切的损耗角正切的温度依赖性。

公开(公告)号：US07074487B2

公开(公告)日：2006-07-11

申请号：US10107774

申请日：2002-03-28

申请人： Tokushige Shichiri ,  Jiro Miyai ,  Akihiko Bando ,  Kiyofumi Toyama ,  Yoshio Aoshima ,  Isei Sannomiya ,  Minoru Nakajima

发明人： Tokushige Shichiri ,  Jiro Miyai ,  Akihiko Bando ,  Kiyofumi Toyama ,  Yoshio Aoshima ,  Isei Sannomiya ,  Minoru Nakajima

IPC分类号： B32B17/10

CPC分类号： B32B17/10688 ,  B32B17/10036 ,  B32B17/10761 ,  C08L29/14 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31627 ,  Y10T428/3163

摘要： The present invention has it for its object to provide an interlayer film for laminated glass and a laminated glass which shows a much decreased extent of blushing of the peripheral region thereof even when placed in a high-humidity atmosphere, without compromise in those fundamental performance characteristics which are required of laminated glass, such as transparency, weather resistance, adhesion and penetration resistance.The present invention is related to an interlayer film for laminated glass comprising a plasticized poly(vinyl acetal) resin and having the haze after 24 hours of immersion is not more than 50% when said interlayer film with a thickness of 0.3 to 0.8 mm is immersed in water at 23° C.

公开(公告)号：US20050181220A1

公开(公告)日：2005-08-18

申请号：US10689619

申请日：2003-10-22

申请人： Shinnen Kobata ,  Yoshio Aoshima ,  Hajime Shohi

发明人： Shinnen Kobata ,  Yoshio Aoshima ,  Hajime Shohi

IPC分类号： B32B17/10 ,  C03C27/12 ,  B32B17/06 ,  B32B9/00 ,  B32B19/00

CPC分类号： B32B17/10688 ,  B32B17/10174 ,  B32B17/1055 ,  Y10T428/162 ,  Y10T428/25 ,  Y10T428/252 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/3163

摘要： The object of the present invention is to provide an interlayer film for laminated glass which exerts excellent heat insulation or electromagnetic wave transmittance and which is suitable for producing a laminated glass having excellent fundamental performance characteristics required for the laminated glass, such as transparency, especially good haze, appropriate bond strength between an interlayer film and glass, penetration resistance, impact absorption, weather resistance, and so on. Also, the object of the present invention is to provide a laminated glass produced by using the above-mentioned interlayer film. These objects are realized by the interlayer film for laminated glass comprising an adhesive resin, wherein the average particle diameter of tin-doped indium oxide and/or antimony-doped tin oxide is ranging from 0 to 80 nm, and the number of the tin-doped indium oxide or antimony-doped tin oxide particles with a particle diameter of not less than 100 nm are dispersed not more than 1 per 1 μm2, and also, by a laminated glass produced by interposing said interlayer film for laminated glass between at least a pair of glass sheets having a visible light transmittance rate (Tv) of not less than 65% in the light rays of 380 to 780 nm, a solar radiation transmittance rate (Ts) in the light rays of 300 to 2500 nm of not more than 80% of the mentioned visible light transmittance rate (Tv), the haze value (H) of up to 1.0% and electromagnetic wave shield (ΔdB) of not more than 10 dB in the wavelength of 10 to 2000 MHz.

摘要翻译： 本发明的目的是提供一种层压玻璃用中间膜，其具有优异的隔热性或电磁波透过率，适用于制造夹层玻璃所需的基本性能优异的夹层玻璃，例如透明性，特别好 中间膜与玻璃之间的粘合强度，耐渗透性，冲击吸收性，耐候性等。 另外，本发明的目的是提供一种通过使用上述中间膜制造的夹层玻璃。 这些目的通过包含粘合树脂的夹层玻璃用中间膜来实现，其中掺锡氧化铟和/或锑掺杂氧化锡的平均粒径为0〜80nm，锡 - 粒径不小于100nm的掺杂的氧化铟或锑掺杂的氧化锡颗粒分散在每1mum 2以上1以上，也可以通过将夹层 在380〜780nm的光线中的至少一对玻璃板之间具有不小于65％的可见光透射率（Tv）的玻璃板，在380〜780nm的光线中的太阳辐射透射率（Ts） 300至2500nm，所述可见光透射率（Tv）不超过80％，雾度值（H）高达1.0％，电磁波屏蔽（DeltadB）波长为10以下不大于10dB 至2000 MHz。

公开(公告)号：US08278379B2

公开(公告)日：2012-10-02

申请号：US13235097

申请日：2011-09-16

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： C08K5/04 ,  C08K3/10 ,  B32B5/16 ,  B32B17/10 ,  B32B17/08 ,  B32B23/04 ,  G11B11/105

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

摘要翻译： 本发明提供了一种夹层玻璃和夹层玻璃的夹层膜，其通过衰减所述重合效应来防止TL值的坍落度，并适用于在宽的温度范围内显示优异的隔音性能。 一种夹层玻璃用中间膜，其包含增塑剂和聚缩醛树脂，其是平均聚合度为1,000〜3000的聚缩醛树脂和平均聚合度为3,000〜5000的聚缩醛树脂的共混物，其具有 缩醛化度为60〜85摩尔％，乙酰基含量为8〜30摩尔％。 夹层玻璃用中间膜，当检查动态粘弹性时，显示出在30℃以下出现最低温度侧最大损耗角正切的损耗角正切的温度依赖性。

公开(公告)号：US07858683B2

公开(公告)日：2010-12-28

申请号：US11646320

申请日：2006-12-28

申请人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

发明人： Kiyofumi Toyama ,  Yoshio Aoshima ,  Chikao Shimizu

IPC分类号： C08K5/04 ,  C08K3/10 ,  B32B5/16 ,  B32B17/10 ,  G11B11/105

CPC分类号： B32B27/08 ,  B32B17/10 ,  B32B17/10009 ,  B32B17/10174 ,  B32B17/10605 ,  B32B17/10761 ,  B32B17/10816 ,  B32B17/10972 ,  B32B27/22 ,  B32B27/30 ,  B32B27/306 ,  B32B27/36 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2307/102 ,  B32B2419/00 ,  B32B2605/00 ,  C08K5/0016 ,  C08K5/103 ,  C08L29/14 ,  C08L2205/02 ,  Y10T428/258 ,  Y10T428/26 ,  Y10T428/269 ,  Y10T428/31616 ,  Y10T428/31627 ,  Y10T428/3163 ,  Y10T428/31645 ,  Y10T428/31649 ,  Y10T428/31797 ,  Y10T428/31909 ,  B32B2367/00 ,  C08L2666/04

摘要： The invention provides an interlayer film for a laminated glass and a laminated glass, which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range. An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin, which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, and which has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %. An interlayer film for a laminated glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

摘要翻译： 本发明提供了一种夹层玻璃和夹层玻璃的夹层膜，其通过衰减所述重合效应来防止TL值的坍落度，并适用于在宽的温度范围内显示优异的隔音性能。 一种夹层玻璃用中间膜，其包含增塑剂和聚缩醛树脂，其是平均聚合度为1,000〜3000的聚缩醛树脂和平均聚合度为3,000〜5000的聚缩醛树脂的共混物，其具有 缩醛化度为60〜85摩尔％，乙酰基含量为8〜30摩尔％。 夹层玻璃用中间膜，当检查动态粘弹性时，显示出在30℃以下出现最低温度侧最大损耗角正切的损耗角正切的温度依赖性。