公开(公告)号：US10550234B2

公开(公告)日：2020-02-04

申请号：US15039070

申请日：2014-11-25

Applicant: KURARAY Co., Ltd.

Inventor： Kaori Maeda ,  Takuya Tsujimoto ,  Toru Takahashi

IPC: C08J5/18 ,  B32B15/08 ,  B32B27/30 ,  C08L33/10 ,  C08L53/00 ,  B32B15/082 ,  C08L33/08 ,  B32B27/08

Abstract: An acrylic resin film comprising 50 to 99 parts by mass of a methacrylic resin (A) comprising not less than 80% by mass of a structural unit derived from methyl methacrylate, and 50 to 1 part by mass of a block copolymer (B) comprising 40 to 90% by mass of methacrylic acid ester polymer block[s] (b1) and 10 to 60% by mass of acrylic acid ester polymer block[s] (b2), provided that the total of the methacrylic resin (A) and the block copolymer (B) is 100 parts by mass, wherein the methacrylic resin (A) and the block copolymer (B) satisfy the inequations (1) and (2): 0.5≤Mw(A)/Mw(b1)≤2.3  (1) 30000≤Mw(b2)≤120000  (2) in which Mw(A) is the weight average molecular weight of the methacrylic resin (A), Mw(b1) is the largest weight average molecular weight among the methacrylic acid ester polymer block[s] (b1) and Mw(b2) is the largest weight average molecular weight among the acrylic acid ester polymer block[s] (b2).

公开(公告)号：US20150251391A1

公开(公告)日：2015-09-10

申请号：US14432557

申请日：2013-10-03

Applicant: KURARAY CO., LTD.

Inventor： Takuya Tsujimoto ,  Wataru Tsuji ,  Noboru Higashida ,  Toshiyuki Iguchi

IPC: B32B27/08 ,  B29C47/06 ,  B32B27/22 ,  B32B27/42 ,  B32B27/28

CPC classification number: B32B27/08 ,  B29C48/21 ,  B29K2029/14 ,  B29K2033/08 ,  B29K2105/0038 ,  B32B27/22 ,  B32B27/28 ,  B32B27/306 ,  B32B27/308 ,  B32B27/42 ,  B32B2250/02 ,  B32B2250/24 ,  B32B2307/412 ,  B32B2307/536 ,  B32B2307/558 ,  B32B2307/712 ,  Y10T428/24967 ,  Y10T428/31786 ,  Y10T428/31859

Abstract: A problem to be solved by the invention is providing a laminate sheet which is made of a polyvinyl acetal resin and a methacrylic resin and has excellent transparency, impact resistance, surface hardness, weatherability, moldability, surface smoothness, and the like, and providing a surface protective sheet having excellent adhesion properties with respect to various types of resins and substrates. The problem can be solved by a laminate sheet including at least one polyvinyl acetal resin layer and at least one methacrylic resin layer which is in close contact with the polyvinyl acetal resin layer, the number of carbon atoms of an acetal moiety per 100 carbon atoms which constitute a main chain of the polyvinyl acetal resin being in a range from 30 to 70 and an average degree of polymerization of the polyvinyl acetal resin being in a range from 500 to 2000.

Abstract translation: 本发明要解决的问题是提供一种由聚乙烯醇缩醛树脂和甲基丙烯酸系树脂制成的层压片，具有优异的透明性，耐冲击性，表面硬度，耐候性，成型性，表面平滑性等， 表面保护片相对于各种树脂和基材具有优异的粘合性。 该问题可以通过包括至少一个聚乙烯醇缩醛树脂层和至少一个与聚乙烯醇缩醛树脂层紧密接触的甲基丙烯酸树脂层，每100个碳原子的缩醛部分的碳原子数 构成聚乙烯醇缩醛树脂的主链在30〜70的范围内，聚乙烯醇缩醛树脂的平均聚合度在500〜2000的范围。