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1. 发明申请

US20230138239A1 THERMOPLASTIC ELASTOMER COMPOSITION, FORMED PRODUCT, LAYERED STRUCTURE, AND METHOD FOR PRODUCING THE LAYERED STRUCTURE 有权
公开(公告)号：US20230138239A1
公开(公告)日：2023-05-04
申请号：US17905395
申请日：2021-02-26
申请人： KURARAY CO., LTD.
发明人： Moe KAWAHARA , Shutaro HIRAKATA , Tomohiro ONO
IPC分类号： C08L53/02 , C08F220/14 , C08F220/18 , C08L25/16
摘要： A thermoplastic elastomer composition including 100 parts by mass of a hydrogenated block copolymer (A), 20 to 180 parts by mass of an acrylic block copolymer (B), 5 to 45 parts by mass of an aromatic polymer (C), and 70 to 250 parts by mass of a softener (D). The hydrogenated block copolymer (A) is a hydrogenated product of a block copolymer (P) having at least two polymer blocks (a1) with a structural unit derived from an aromatic vinyl compound and at least one polymer block (a2) with a structural unit derived from a conjugated diene. The acrylic block copolymer (B) has at least one polymer block (b1) with a structural unit derived from an acrylate and at least one polymer block (b2) with a structural unit derived from a methacrylate.

2. 发明申请

US20220056316A1 LAMINATES HAVING PERFORATED STRUCTURAL BODY 有权
公开(公告)号：US20220056316A1
公开(公告)日：2022-02-24
申请号：US17417638
申请日：2019-12-25
申请人： KURARAY CO., LTD.
发明人： Tomohiro ONO , Kanayo NAKADA , Makoto AKAI
IPC分类号： C09J7/35
摘要： A laminate is provided which includes a structural body including a base portion and a through hole and which can concurrently satisfy operability and stickiness during processes such as fitting, can be released with no or little adhesive residue, and also exhibits excellent adhesion to various adherends, especially metals. The laminate includes a substrate and a structural body disposed on the surface of at least one side of the substrate, the structural body including a base portion and a through hole. The base portion of the structural body includes an acrylic triblock copolymer (I) that includes two polymer blocks (A1) and (A2) each including methacrylic acid ester units and one polymer block (B) including acrylic acid ester units represented by the general formula CH2═CH—COOR1 (1) (wherein R1 denotes a C1-C3 organic group). The acrylic triblock copolymer (I) has an (A1)-(B)-(A2) block structure and a weight average molecular weight of 50,000 to 250,000. The total content of the polymer blocks (A1) and (A2) is not more than 35 mass % of the acrylic triblock copolymer (I).

3. 发明申请

US20220106503A1 LAMINATE PRODUCTION METHOD 有权
公开(公告)号：US20220106503A1
公开(公告)日：2022-04-07
申请号：US17273569
申请日：2019-08-30
申请人： KURARAY CO., LTD.
发明人： Tomohiro ONO , Makoto AKAI , Moe KAWAHARA , Kanayo NAKADA
IPC分类号： C09J153/00
摘要： A laminate production method is provided which can sufficiently prevent the occurrence of blocking without causing deterioration in the outstanding characteristics of acrylic block copolymers such as adhesive performance, and can also ensure excellent processability during extrusion. The laminate production method includes a step (1) of bringing raw pellets of an acrylic block copolymer (A) into contact with an aqueous dispersion (C) containing acrylic resin particles (B) and no surfactants, the acrylic block copolymer (A) including at least one polymer block (a1) including acrylic acid alkyl ester units and at least one polymer block (a2) including methacrylic acid alkyl ester units, a step (2) of removing water attached to the pellets and thereby obtaining pellets (D), and a step (3) of preparing an adhesive composition using an adhesive feedstock including the pellets (D) from the step (2), and extruding the adhesive composition to form an adhesive layer and thereby producing a laminate including the adhesive layer and a substrate layer.

4. 发明申请

US20220363883A1 VINYL CHLORIDE RESIN COMPOSITIONS AND SHAPED ARTICLES 有权
公开(公告)号：US20220363883A1
公开(公告)日：2022-11-17
申请号：US17757934
申请日：2020-12-21
申请人： KURARAY CO., LTD.
发明人： Moe KAWAHARA , Makoto AKAI , Tomohiro ONO
IPC分类号： C08L27/06
摘要： A vinyl chloride resin composition includes a vinyl chloride resin (A), an acrylic block copolymer (B) including a polymer block (b1) containing acrylic acid ester units and a polymer block (b2) containing methacrylic acid ester units, and a gelation accelerator (C), where the weight average molecular weight of the acrylic block copolymer (B) is in the range of 100,000 to 250,000, the content of the polymer block (b2) in the acrylic block copolymer (B) is in the range of 10 to 25 mass %, and the vinyl chloride resin composition contains 20 to 150 parts by mass of the acrylic block copolymer (B) and 4 to 18 parts by mass of the gelation accelerator (C) with respect to 100 parts by mass of the vinyl chloride resin (A).

5. 发明申请

US20220055361A1 LAMINATES HAVING PERFORATED STRUCTURAL BODY 有权
公开(公告)号：US20220055361A1
公开(公告)日：2022-02-24
申请号：US17417447
申请日：2019-12-25
申请人： KURARAY CO., LTD.
发明人： Tomohiro ONO , Kanayo NAKADA
IPC分类号： B32B27/30 , B32B3/26
摘要： A laminate is provided which includes a substrate and a structural body including a base portion and a through hole and which can concurrently satisfy stickiness and releasability and can be released with no or little adhesive residue. The laminate includes a substrate and a structural body disposed on the surface of at least one side of the substrate, the structural body including a base portion and a through hole. The base portion of the structural body includes an acrylic triblock copolymer (I) and no tackifier resins or includes an acrylic triblock copolymer (I) and a tackifier resin in a tackifier resin/(I) mass ratio of not more than 20/100. The acrylic triblock copolymer (I) includes two polymer blocks (A1) and (A2) each including methacrylic acid ester units and one polymer block (B) including acrylic acid ester units represented by the general formula CH2═CH—COOR1 (1) (wherein R1 denotes a C4-C12 organic group). The acrylic triblock copolymer (I) has an (A1)-(B)-(A2) block structure and a weight average molecular weight of 50,000 to 250,000. The total content of the polymer blocks (A1) and (A2) is not more than 35 mass % of the acrylic triblock copolymer (I).

6. 发明申请

US20210347931A1 PELLETS INCLUDING BLOCK COPOLYMER AND SHAPED ARTICLES OBTAINED FROM SUCH PELLETS 有权
公开(公告)号：US20210347931A1
公开(公告)日：2021-11-11
申请号：US17283191
申请日：2019-10-04
申请人： KURARAY CO., LTD.
发明人： Moe KAWAHARA , Makoto AKAI , Kanayo NAKADA , Tomohiro ONO
IPC分类号： C08F299/04 , C08J3/12
摘要： Sufficiently antiblock pellets are provided that include an acrylic block copolymer which has a polymer block including methyl acrylate units. A shaped article is provided from the pellets with high productivity while avoiding deterioration in the outstanding characteristics of the acrylic block copolymer. The pellets include an acrylic block copolymer (I) including at least one polymer block (A1) including methacrylic acid ester units, and at least one polymer block (B1) including acrylic acid ester units, and an acrylic polymer (II) containing 35 mass % or more methyl methacrylate units and having a melt flow rate (MFR) measured at 230° C. under 3.8 kg load of not less than 10 g/10 min. The acrylic acid ester units present in the polymer block (B1) of the acrylic block copolymer (I) consist solely of methyl acrylate units and acrylic acid ester (1) units represented by the general formula CH2═CH—COOR1 (1) (wherein R1 represents a C4-C12 organic group). The mass ratio (I)/(II) of the acrylic block copolymer (I) to the acrylic polymer (II) is 90/10 to 40/60.

7. 发明申请

US20210332163A1 ANIONIC POLYMERIZATION PROCESS AND POLYMER PRODUCTION METHOD 有权
公开(公告)号：US20210332163A1
公开(公告)日：2021-10-28
申请号：US17271431
申请日：2019-08-22
申请人： KURARAY CO., LTD.
发明人： Moe KAWAHARA , Tomohiro ONO
IPC分类号： C08F2/26 , C08F220/14 , C08F4/12 , C08F220/18 , C08K5/17 , C08K5/56 , C08F297/02
摘要： A process for anionically polymerizing a (meth)acrylic acid in the presence of a tertiary organoaluminum compound (A), an organolithium compound (B) and at least one kind of a Lewis base (C) in a polymerization system. The tertiary organoaluminum compound (A) includes a tertiary organoaluminum compound (A1) having a chemical structure in which at least two of three unshared electrons of an aluminum atom are bonded to an aromatic ring via an oxygen atom, and the tertiary organoaluminum compound (A) has a molar ratio (A2)/(A1) in the range of 0% or above and 0.8% or below between a tertiary organoaluminum compound (A2) having a chemical structure in which at most one of three unshared electrons of an aluminum atom is bonded to an aromatic ring via an oxygen atom, and the tertiary organoaluminum compound (A1).

8. 发明申请

US20210115197A1 METHOD FOR PRODUCING ACRYLIC BLOCK COPOLYMER PELLETS 有权
公开(公告)号：US20210115197A1
公开(公告)日：2021-04-22
申请号：US16973924
申请日：2019-05-28
申请人： KURARAY CO., LTD.
发明人： Makoto AKAI , Tomohiro ONO , Moe KAWAHARA
IPC分类号： C08J3/12 , C08F293/00
摘要： Pellets of an acrylic block copolymer are provided which are imparted with sufficient antiblocking properties without deterioration in the outstanding performance of the acrylic block copolymer such as transparency. A method for producing pellets (D) including an acrylic block copolymer (A) includes bringing raw pellets of an acrylic block copolymer (A) into contact with an aqueous dispersion (C) containing acrylic resin particles (B) and no surfactants, the acrylic block copolymer (A) including at least one polymer block (a1) including acrylic acid alkyl ester units and at least one polymer block (a2) including methacrylic acid alkyl ester units, and removing water attached to the pellets.

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