公开(公告)号：US20160122603A1

公开(公告)日：2016-05-05

申请号：US14890336

申请日：2014-05-09

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Yoshihiro MORISHITA

IPC: C09J153/00 ,  C08F293/00

CPC classification number: C09J153/00 ,  C08F4/52 ,  C08F293/005 ,  C08F297/026 ,  C08F220/14 ,  C08F2220/1825

Abstract: Provided are an acrylic hot-melt adhesive that has both good hot-melt processability and good holding power, that is suitable for applications to a hot-melt coating method in which coating is performed at a low temperature at a high speed, that has good transparency and good weather resistance, and that further has good adhesiveness at low temperatures, and a block copolymer suitable for use in the adhesive. Prepared is an adhesive containing a block copolymer having at least one structure represented by a general formula: -[A1]-[B/A2]- (where, in the formula, [A1] represents a polymer block composed of a structural unit derived from a methacrylic acid ester (A1), [B/A2] represents a copolymer block composed of a structural unit derived from an acrylic acid ester (B) and a structural unit derived from a methacrylic acid ester (A2), and the copolymer block [B/A2] has a gradient copolymer block section in which a copolymerization ratio of the methacrylic acid ester (A2) continuously increases from a section connected to the polymer block [A1]), and having a total content of the structural units derived from the methacrylic acid ester (A1) and the methacrylic acid ester (A2) of 5% to 60% by mass, a weight-average molecular weight (Mw) of 30,000 to 300,000, and a molecular weight distribution (Mw/Mn) of 1.0 to 1.5.

Abstract translation: 提供了具有良好的热熔加工性和良好的保持力的丙烯酸类热熔性粘合剂，适用于在低温下高速进行涂布的热熔涂布方法，具有良好的性能 透明性和耐候性良好，并且在低温下进一步具有良好的粘着性，以及适用于粘合剂的嵌段共聚物。 制备的是含有至少一种由以下通式表示的结构的嵌段共聚物的粘合剂： - [A1] - [B / A2] - （式中，[A1]表示由结构单元衍生的聚合物嵌段 甲基丙烯酸酯（A1），[B / A2]表示由来自丙烯酸酯（B）的结构单元和来自甲基丙烯酸酯（A2）的结构单元构成的共聚物嵌段，共聚物嵌段 [B / A2]具有梯度共聚物嵌段部分，其中甲基丙烯酸酯（A2）的共聚比从与聚合物嵌段[A1]连接的部分连续增加），并且具有衍生自 甲基丙烯酸酯（A1）和甲基丙烯酸酯（A2）为5〜60质量％，重均分子量（Mw）为30,000〜300,000，分子量分布（Mw / Mn）为1.0 到1.5。

公开(公告)号：US20180016431A1

公开(公告)日：2018-01-18

申请号：US15546198

申请日：2016-01-21

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Yoshihiro MORISHITA

IPC: C08L53/00 ,  C08L33/08 ,  C09J133/08 ,  C08L33/10 ,  C09J153/00 ,  C09J133/10

CPC classification number: C08L53/00 ,  C08F297/026 ,  C08G2170/20 ,  C08G2261/126 ,  C08L33/08 ,  C08L33/10 ,  C08L2205/025 ,  C09J133/08 ,  C09J133/10 ,  C09J153/00

Abstract: [Object] To provide an acrylic block copolymer which can be used in an adhesive composition to give an excellent adhesive force, cohesive force, holding power, tack, and hot-melt coatability; and also to provide an adhesive composition containing such a block copolymer. [Solution] An acrylic block copolymer (I) contains at least two polymer blocks (A) containing methacrylic acid ester units and at least one polymer block (B) containing acrylic acid ester units, wherein the acrylic block copolymer (I) has structure of blocks (A)-(B)-(A), a weight average molecular weight (Mw) ranging from 30,000 to 100,000 and a melt viscosity of not more than 100,000 mPa·s, the melt viscosity being measured at 100° C. with a Brookfield viscometer.

公开(公告)号：US20160244647A1

公开(公告)日：2016-08-25

申请号：US15031224

申请日：2014-10-20

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Moe KAWAHARA ,  Yoshihiro MORISHITA

IPC: C09J153/00 ,  G09F3/10 ,  C09J7/02

CPC classification number: C09J153/00 ,  C08F297/026 ,  C09J7/22 ,  C09J7/35 ,  C09J133/06 ,  C09J2201/122 ,  C09J2201/61 ,  C09J2203/334 ,  C09J2453/00 ,  G09F3/10

Abstract: Provided are an adhesive composition suitable for a hot-melt adhesive which has a low tack and which after adhering to an adherend and through heat treatment comes to have sufficient adhesive force; and an adhesive product using the adhesive composition. The hot-melt adhesive composition includes an acrylic block copolymer (I) having at least one polymer block (A) including methacrylic acid ester units and at least one polymer block (B) including acrylic acid ester units, wherein the acrylic acid ester units constituting the polymer block (B) contain an acrylic acid ester (1) represented by CH2═CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms) and an acrylic acid ester (2) represented by CH2═CH—COOR2 (2) (wherein R2 is an organic group having 4 to 12 carbon atoms), and a mass ratio (1)/(2) of the acrylic acid ester (1) to the acrylic acid ester (2) is 90/10 to 25/75.

Abstract translation: 提供一种适合于具有低粘性的热熔粘合剂的粘合剂组合物，并且在粘附到被粘物之后并且通过热处理具有足够的粘合力; 和使用粘合剂组合物的粘合剂产品。 该热熔粘合剂组合物包括具有至少一个包含甲基丙烯酸酯单元的聚合物嵌段（A）和至少一个包含丙烯酸酯单元的聚合物嵌段（B）的丙烯酸嵌段共聚物（I），其中构成的丙烯酸酯单元 聚合物嵌段（B）含有由CH2 = CH-COOR1（1）表示的丙烯酸酯（1）（其中R1是碳原子数1〜3的有机基）和由CH2 = CH 2表示的丙烯酸酯（2） CH-COOR2（2）（其中R2为碳原子数4〜12的有机基），丙烯酸酯（1）与丙烯酸酯（2）的质量比（1）/（2）为90 / 10至25/75。

公开(公告)号：US20200157326A1

公开(公告)日：2020-05-21

申请号：US16627482

申请日：2018-07-31

Applicant: KURARAY CO., LTD.

Inventor： Yoshihiro MORISHITA

IPC: C08L23/12 ,  C09J123/12 ,  A61L15/58 ,  A61L15/22 ,  C08F297/04 ,  C09J123/14 ,  C08L23/14 ,  C09J123/08 ,  C08L23/08 ,  C08L23/22 ,  C09J123/22

Abstract: A thermoplastic resin composition containing an olefin-based polymer and a hydrogenated block copolymer, wherein: with respect to the olefin-based polymer, an amount of heat of crystal fusion (αH) is less than 80 J/g; the hydrogenated block copolymer is a hydrogenated product of a block copolymer composed of a first polymer block consisting of a structural unit derived from an aromatic vinyl compound and a second polymer block consisting of a structural unit derived from a conjugated diene compound; the content of the first polymer block in the hydrogenated block copolymer is 1 to 60% by mass; a proportion of a vinyl bond amount of the second polymer block is 50 to 95 mol%; and the content of the hydrogenated block copolymer in the thermoplastic resin composition is from 1 to 30 parts by mass relative to 100 parts by mass of the total amount of the olefin-based polymer and the hydrogenated block copolymer.

公开(公告)号：US20180334521A1

公开(公告)日：2018-11-22

申请号：US15970096

申请日：2018-05-03

Applicant: KURARAY CO., LTD.

Inventor： Marcel GRUENDKEN ,  Ralph BOEHM ,  Heith FOSTER ,  Yoshihiro MORISHITA

IPC: C08F236/10 ,  C08F212/12 ,  C08F10/02 ,  C08F10/06

CPC classification number: C08F236/10 ,  C08F10/02 ,  C08F10/06 ,  C08F212/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2800/20 ,  C08F2810/20 ,  C08L9/00 ,  C08L53/025 ,  C08L2205/03 ,  C08L2312/02 ,  C08L23/12 ,  C08K5/01

Abstract: The present invention relates to a vulcanizable composition comprising a specific block copolymer thermoplastic elastomer, a polyolefin, a rubber softener, a crosslinking agent and a specified liquid diene rubber crosslinking co-agent, and a dynamically vulcanized composition produced by intimately mixing the above components under shear and at elevated temperature, which dynamically vulcanized composition is thermoplastic, elastic and moldable.

公开(公告)号：US20180311941A1

公开(公告)日：2018-11-01

申请号：US15569571

申请日：2016-04-21

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Yoshihiro MORISHITA ,  Hiroshi OSHIMA

IPC: B32B27/30 ,  C08L33/08 ,  C08L27/06 ,  C08K5/521 ,  C08K5/10

CPC classification number: B32B27/30 ,  C08F297/02 ,  C08K5/10 ,  C08K5/521 ,  C08L53/00 ,  C08L63/00 ,  C08L67/00

Abstract: The invention provides a laminating acrylic thermoplastic polymer composition which is favorably laminated together with a layer including a plasticizer-containing polymer composition while ensuring that the migration of the plasticizer into the acrylic thermoplastic polymer composition layer is small and the resultant laminate attains excellent durability, and also provides a laminate obtained by laminating a layer including the laminating acrylic thermoplastic polymer composition onto one or both sides of a layer including the plasticizer-containing polymer composition. Further, the invention provides a polymer composition which, when the plasticizer-containing polymer described above is a vinyl chloride-based polymer, can keep sufficient adhesive force after being adhered to a layer including such a vinyl chloride-based polymer, and also provides an adhesive product using the composition. The laminating acrylic thermoplastic polymer composition is a composition for lamination with a layer including a plasticizer-containing polymer composition. The acrylic thermoplastic polymer composition includes an acrylic block copolymer (I) including at least one polymer block (A) containing methacrylic acid ester units and at least one polymer block (B) containing acrylic acid ester units; and the acrylic acid ester units constituting the polymer block (B) in the acrylic block copolymer (I) include an acrylic acid ester (1) unit represented by the general formula CH2═CH—COOR1 (1) (wherein R1 is an organic group having 1 to 3 carbon atoms).

公开(公告)号：US20190284362A1

公开(公告)日：2019-09-19

申请号：US16301638

申请日：2017-05-17

Applicant: KURARAY CO., LTD.

Inventor： Yoshihiro MORISHITA ,  Masahiro KATO ,  Yasushi SENDA ,  Hiroyuki ARISHIMA ,  Jun KOISHIKAWA

IPC: C08J9/10 ,  C08J9/00 ,  C08L23/16 ,  C08L23/08 ,  C08L9/06 ,  C08L53/02 ,  B29D99/00

Abstract: Provided are a foam molded body capable of improving damping properties and sound insulation properties of a panel and realizing weight reduction of a panel, a dam rubber, a complex of a dam rubber and a panel, and a method for increasing a sound transmission loss.The present invention is concerned with a foam molded body of a resin composition containing a block copolymer (I) which is a block copolymer having a polymer block (A) composed mainly of a structural unit derived from an aromatic vinyl compound and other polymer block (B), exhibits a peak top temperature of tan δ, as measured under a condition of a thickness of a test piece of 1 mm, a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of −70 to 70° C., and a temperature rise rate of 3° C./min in conformity with JIS K7244-10 (2005), of −50 to 50° C., and has a peak top molecular weight determined in terms of standard polystyrene by gel permeation chromatography of 30,000 to 500,000; at least one olefin-based polymer (II) selected from the group consisting of an ethylene-propylene-diene copolymer rubber, an ethylene-vinyl acetate copolymer, and a polyethylene-based resin; a crosslinking agent (III); and a foaming agent (IV).

公开(公告)号：US20190062609A1

公开(公告)日：2019-02-28

申请号：US16092954

申请日：2017-04-06

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Yoshihiro MORISHITA

IPC: C09J153/00 ,  C09J5/06 ,  C08F297/02

Abstract: The invention provides adhesive compositions which can be hot-melt processed by being thermally melted at a relatively low temperature and which have excellent adhesion force, holding power and tack, and adhesive products including the adhesive compositions. A hot melt adhesive composition includes an acrylic block copolymer (I) including at least one polymer block (A) including methacrylate ester units, and at least one polymer block (B) including acrylate ester units, wherein the methacrylate ester units constituting the polymer block (A) include at least a methyl methacrylate (a1) unit and a methacrylate ester (a2) unit represented by the general formula CH2═C(CH3)—COOR1 (1) wherein R1 is a C2-16 organic group.

公开(公告)号：US20170233619A1

公开(公告)日：2017-08-17

申请号：US15504437

申请日：2015-08-17

Applicant: KURARAY CO., LTD.

Inventor： Kanayo NAKADA ,  Yoshihiro MORISHITA

IPC: C09J153/00 ,  C09J11/06 ,  C09J11/08 ,  C08F297/02

CPC classification number: C09J153/00 ,  C08F297/02 ,  C08F297/026 ,  C09J7/00 ,  C09J7/20 ,  C09J11/06 ,  C09J11/08 ,  C09J133/04

Abstract: The present invention provides pressure-sensitive adhesive compositions which have excellent adhesion force, cohesion force, tack and holding power, and pressure-sensitive adhesive products including the pressure-sensitive adhesive compositions. The pressure-sensitive adhesive composition includes (i) 100 parts by mass of an acrylic block copolymer (I) including at least one polymer block (A) containing methacrylate ester units and at least one polymer block (B) containing acrylate ester units, the acrylic block copolymer (I) having a weight average molecular weight of 30,000 to 300,000, the acrylate ester units in the polymer block (B) including not less than 80 mass % of units from an acrylate ester (1) represented by the general formula (1): CH2═CH—COOR2 (wherein R2 is an organic group having 7 to 12 carbon atoms); (ii) 1 to 300 parts by mass of a tackifier resin; and (iii) 1 to 200 parts by mass of at least one plasticizer selected from process oils, and organic acid esters and oligomers thereof.