公开(公告)号：US20210394494A1

公开(公告)日：2021-12-23

申请号：US17279316

申请日：2019-09-25

Applicant: KURARAY CO., LTD.

Inventor： Yuhi SHIMAZUMI ,  Takeshi KUSUDOU ,  Koichiro ISOUE ,  Hirotaka YASUDA ,  Takuya KOBAYASHI

IPC: B32B17/10 ,  C08F16/38 ,  C08J5/18

Abstract: The present invention relates to a polyvinyl acetal resin film, comprising a polyvinyl acetal resin material, wherein the polyvinyl acetal resin film has a thickness of 10 to 350 μm, one surface has a 10-point average roughness Rz value of less than 2 μm and a friction angle of larger than 31° but 40° or smaller, the other surface has a 10-point average roughness Rz value of 2 μm to 7 μm and a friction angle of 20° to 31°, a viscosity of a toluene/ethanol (1:1, mass ratio) solution containing 10%-by-mass of a polyvinyl acetal resin contained in the polyvinyl acetal resin material, which is measured at 20° C. and 30 rpm using a Brookfield-type (B-type) viscometer, is 100 to 1,000 mPa·s, and the amount of a plasticizer in the polyvinyl acetal resin film is 0 to 20% by mass based on a total mass of the polyvinyl acetal resin film.

公开(公告)号：US20180290439A1

公开(公告)日：2018-10-11

申请号：US15525515

申请日：2015-11-10

Applicant: KURARAY CO., LTD.

Inventor： Takeshi KUSUDOU ,  Takuya KOBAYASHI ,  Taiga YUI ,  Mitsunori ASADA ,  Yohei KAMATA ,  Koichiro ISOUE

IPC: B32B17/10 ,  E06B3/67

Abstract: The present invention provides an interlayer film for laminated glass which has excellent sound insulating properties even when the thickness is reduced, and also has a low degree of orientation and low shrinkability.The invention relates to an interlayer film for laminated glass which includes at least one layer A containing a thermoplastic elastomer, wherein the thermoplastic elastomer includes a hard segment block and a soft segment block, the layer A has a sea-island phase separated structure in which the hard segment block is included as an island component and the soft segment block is included as a sea component, and the degree of orientation (1) defined by (maximum intensity value−minimum intensity value)/(maximum intensity value+minimum intensity value) based on the maximum intensity value and the minimum intensity value in an arbitrary azimuth range of 180° including the azimuth at which the intensity reaches the maximum in the azimuthal intensity distribution of periodic scattering or coherent scattering by the hard segment block or the soft segment block obtained for the layer A by small-angle X-ray scattering measurement is 0.9 or less.

公开(公告)号：US20170334173A1

公开(公告)日：2017-11-23

申请号：US15525506

申请日：2015-11-10

Applicant: KURARAY CO., LTD.

Inventor： Taiga YUI ,  Takuya KOBAYASHI ,  Takeshi KUSUDOU ,  Koichiro ISOUE

IPC: B32B25/08 ,  E06B3/67 ,  B32B25/04

CPC classification number: B32B17/10165 ,  B32B17/10036 ,  B32B17/1055 ,  B32B17/10559 ,  B32B17/10577 ,  B32B17/10587 ,  B32B17/10605 ,  B32B17/10724 ,  B32B17/10743 ,  B32B17/10761 ,  B32B17/1077 ,  B32B17/10788 ,  B32B25/042 ,  B32B25/08 ,  B32B2307/102 ,  B32B2307/30 ,  B32B2307/412 ,  B32B2307/542 ,  B32B2307/734 ,  B32B2309/105 ,  B32B2605/006 ,  B60J1/001 ,  B60J1/02 ,  B60J1/08 ,  B60J1/18 ,  B60J7/043 ,  E06B3/66 ,  E06B3/6707 ,  E06B3/6715

Abstract: The present invention provides an interlayer film for laminated glass which has excellent sound insulating properties even when the thickness is reduced, and also hardly causes optical unevenness.An interlayer film for laminated glass includes at least one layer A containing a thermoplastic elastomer, wherein the shear storage modulus of the layer A at 70° C. as measured by performing a dynamic viscoelasticity test at a frequency of 1,000 Hz in accordance with ASTM D4065-06 is 1 MPa or more, and a layer having a higher shear storage modulus than the layer A is provided on at least one surface of the layer A, and at least one surface of the interlayer film for laminated glass is in a state of having been shaped.

公开(公告)号：US20160159997A1

公开(公告)日：2016-06-09

申请号：US14908997

申请日：2013-07-31

Applicant: KURARAY CO., LTD.

Inventor： Taiga YUI ,  Takeshi KUSUDOU ,  Sachiko TAKASHITA ,  Mitsunori ASADA

IPC: C08J5/18 ,  C08K5/103

CPC classification number: C08J5/18 ,  B32B17/10577 ,  B32B17/10761 ,  B32B2457/12 ,  C08J3/18 ,  C08J2329/14 ,  C08K5/103

Abstract: An object is to provide a polyvinyl acetal film which has excellent transparency and can suppress a thermal cracking phenomenon.The above object is achieved by providing a polyvinyl acetal film in which a ratio between a composite modulus (GPa) of the highest part in a convex part and a composite modulus (GPa) of the lowest part in a concave part on a surface of a film on a side in contact with glass, calculated by a nanoindentation measurement using a scanning probe microscope, is 0.90 or less, when a laminated glass is formed. In addition, the above object is achieved by providing a polyvinyl acetal film in which a ratio between a hardness (GPa) of the highest part in the convex part and a hardness (GPa) of the lowest part in the concave part, calculated by the SPM nanoindentation measurement, is 0.90 or less.

Abstract translation: 本发明的目的是提供一种聚乙烯醇缩醛膜，其具有优异的透明性并且可以抑制热裂纹现象。 上述目的通过提供一种聚乙烯醇缩醛膜实现，其中凸部中最高部分的复合模量（GPa）与表面上的凹部中最低部分的复合模量（GPa）之比 通过使用扫描探针显微镜的纳米压痕测定计算出的与玻璃接触的一侧的膜的厚度为0.90以下。 另外，上述目的通过提供一种聚乙烯醇缩醛膜来实现，其中凸部中最高部分的硬度（GPa）与凹部中最低部分的硬度（GPa）之比由 SPM纳米压痕测量值为0.90以下。