公开(公告)号：US20220363940A1

公开(公告)日：2022-11-17

申请号：US17745173

申请日：2022-05-16

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Eiichi IMOTO ,  Chihiro YOSHIDA ,  Koki HASHIMOTO

IPC: C09D133/20 ,  C09D5/20 ,  C09D7/61

Abstract: Provided is a paint-protective coating material formed from an acrylic coating composition comprising an acrylic polymer as base polymer. The acrylic polymer-forming monomers includes a monomer (mT) having a homopolymer Tg of 90° C. or higher and a monomer (mL) having a homopolymer Tg of −30° C. or lower. The monomer (mT) includes at least acrylonitrile. In the monomers, the monomers (mT) and (mL) have a molar ratio (mT/mL) of 0.8 or higher and 1.5 or lower. The paint-protective coating material has storage moduli of 150 MPa or higher and 1000 MPa or lower at 23° C., and 0.40 MPa or higher at 70° C.

公开(公告)号：US20160137883A1

公开(公告)日：2016-05-19

申请号：US14902931

申请日：2014-06-06

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Toshitaka SUZUKI ,  Nao WAKAYAMA

IPC: C09J7/02

CPC classification number: C09J7/20 ,  B32B7/00 ,  B32B7/02 ,  B32B7/04 ,  B32B7/12 ,  B32B27/00 ,  B32B27/06 ,  B32B27/08 ,  B32B27/18 ,  B32B27/30 ,  B32B27/308 ,  B32B2307/40 ,  B32B2307/412 ,  B32B2307/50 ,  B32B2307/552 ,  B32B2307/554 ,  B32B2307/558 ,  B32B2307/584 ,  B32B2307/728 ,  B32B2307/732 ,  B32B2571/00 ,  B32B2605/00 ,  B32B2605/006 ,  B32B2605/08 ,  C08L2201/56 ,  C08L2312/00 ,  C09J7/385 ,  C09J133/04 ,  C09J2201/122 ,  C09J2201/606 ,  C09J2433/00

Abstract: A protection sheet is provided for application to a vehicle window plate to protect the window plate. Protection sheet includes a substrate and a PSA layer provided on one surface of substrate. Protection sheet has a 30-minute peel strength (S1) of less than 0.10 N/20 mm and a 48-hour peel strength (S2) of 0.05 N/20 mm or greater when applied to a glass plate by a wet application method where water is provided to the surface of the glass plate and protection sheet is press-bonded to the glass plate while pushing the water present between the glass plate surface and PSA layer to the outside of the bonding area.

Abstract translation: 提供保护片以用于车窗玻璃板以保护窗板。 保护片包括衬底和设置在衬底的一个表面上的PSA层。 当通过湿式施加方法施加到玻璃板上时，保护片具有小于0.10N / 20mm的30分钟剥离强度（S1）和小于0.05N / 20mm或更大的48小时剥离强度（S2），其中 向玻璃板的表面提供水，并且将存在于玻璃板表面和PSA层之间的水推到接合区域的外部，将保护片压在玻璃板上。

公开(公告)号：US20240392051A1

公开(公告)日：2024-11-28

申请号：US18560987

申请日：2022-05-13

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Koki HASHIMOTO ,  Eiichi IMOTO ,  Chihiro YOSHIDA

IPC: C08F220/18 ,  B05C5/02 ,  C08F218/08 ,  C09D5/00 ,  C09D5/02 ,  C09D131/04 ,  C09D133/08

Abstract: Provided is a paint-protective coating material formed from a liquid coating composition. The coating composition comprises, as its base polymer, a polymer (A) that is a polymerization product of monomers comprising an acrylic monomer. The polymer (A) has an SP value of 9.8 (cal/cm3)1/2 or greater and a glass transition temperature of 0° C. or lower, calculated based on the composition of the monomers forming the polymer (A).

公开(公告)号：US20240263033A1

公开(公告)日：2024-08-08

申请号：US18561059

申请日：2022-05-13

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Koki HASHIMOTO ,  Eiichi IMOTO ,  Chihiro YOSHIDA

IPC: C09D133/06 ,  C08F218/08 ,  C08F220/18 ,  C09D5/02

CPC classification number: C09D133/064 ,  C08F218/08 ,  C08F220/1804 ,  C09D5/022 ,  C09D133/062 ,  C08F2800/10

Abstract: Provided is a paint-protective coating material formed from a liquid coating composition. The coating composition comprises, as its base polymer, a polymer (A) that is a polymerization product of monomers comprising an acrylic monomer. The paint-protective coating material has a storage modulus at 70° C. of 0.40 MPa or higher and 1.30 or lower, a storage modulus at 23° C. of 250 MPa or higher and 800 MPa or lower, and a storage modulus at −30° C. of 2300 MPa or less.

公开(公告)号：US20130244029A1

公开(公告)日：2013-09-19

申请号：US13827820

申请日：2013-03-14

Applicant: NITTO DENKO CORPORATION ,  KANSAI PAINT CO., LTD.

Inventor： Takeshi IGARASHI ,  Toshitaka SUZUKI ,  Yoshikuni HIRANO

IPC: C09J7/02

CPC classification number: C09J7/387 ,  C09J123/02 ,  C09J123/22 ,  Y10T428/2883

Abstract: The present invention provides paint protection sheet 10 comprising support substrate 1 and pressure-sensitive adhesive layer 2 provided on support substrate 1. The pressure-sensitive adhesive constituting pressure-sensitive adhesive layer 2 comprises a polyisobutylene as its base polymer and a styrene/isobutylene block copolymer. The styrene/isobutylene block copolymer is contained in an amount larger than zero part by mass, but smaller than or equal to 70 parts by mass relative to 100 parts by mass of the polyisobutylene.

Abstract translation: 本发明提供了涂料保护片10，其包含支撑基板1和设置在支撑基板1上的压敏粘合剂层2.构成压敏粘合剂层2的压敏粘合剂包括作为其基础聚合物的聚异丁烯和苯乙烯/异丁烯嵌段 共聚物。 相对于100质量份的聚异丁烯，苯乙烯/异丁烯嵌段共聚物的含量大于0质量份，但小于等于70质量份。

公开(公告)号：US20210198532A1

公开(公告)日：2021-07-01

申请号：US17057996

申请日：2019-05-21

Applicant: NITTO DENKO CORPORATION

Inventor： Takuma OGAWA ,  Yoshio NAKAGAWA ,  Takeshi IGARASHI ,  Kaito YAMAMOTO

IPC: C09J7/38 ,  C09J133/06

Abstract: An objective is to provide a surface protective PSA sheet that has well-balanced bonding strength for various adherends differing in polarity and a capability to suppress peeling and lifting as well as an ability to inhibit touch-up paint peeling and an increase in bonding strength with time. The surface protective PSA sheet having a PSA layer and a resin substrate supporting the PSA layer, characterized by satisfying the following conditions (a1), (a1-1) and (c1) has well-balanced bonding strength for various adherends differing in polarity and is capable of suppressing peeling and lifting and inhibiting touch-up paint peeling and an increase in boding strength with time. (a1) The PSA layer is formed from a PSA composition comprising a (meth)acrylic copolymer and a tackifier, the tackifier accounting for 1.0-30 parts by mass of the PSA composition with the (meth)acrylic copolymer being 100 parts by mass. (a1-1) The (meth)acrylic copolymer comprises 0.1-2.8% by mass functional group-containing structural unit, the structural unit including at least one species of functional groups selected from the group consisting of a carboxyl group and a salt thereof as well as a sulfo group and a salt thereof. (c1) The surface protective PSA sheet has tensile moduli of elasticity of 180-330 MPa in both MD and TD.

公开(公告)号：US20150217546A1

公开(公告)日：2015-08-06

申请号：US14611558

申请日：2015-02-02

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Yasunori YAMAMOTO ,  Nao WAKAYAMA

IPC: B32B27/32 ,  B32B27/08

CPC classification number: B32B27/32 ,  B29C48/21 ,  B29C48/30 ,  B29C48/305 ,  B32B7/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/20 ,  B32B2250/24 ,  B32B2264/102 ,  B32B2307/51 ,  B32B2307/712 ,  B32B2307/748

Abstract: Provided is a surface protective sheet substrate capable of bringing about weatherability with less weathering stabilizer. The surface protective sheet substrate provided by this invention comprises a polyolefin resin accounting for more than 50% by weight of the entire substrate. The substrate comprises an inorganic weathering stabilizer-containing layer which comprises an inorganic weathering stabilizer. The inorganic weathering stabilizer-containing layer has a thickness of 10 μm or larger, but smaller than 40 μm. The inorganic weathering stabilizer content accounts for 8% by weight or more of the inorganic weathering stabilizer-containing layer. The inorganic weathering stabilizer content per unit area of substrate is 2.0 g/m2 or greater.

Abstract translation: 提供一种表面保护片基材，能够以较少的耐候性稳定剂带来耐候性。 由本发明提供的表面保护片基材包含占整个基材重量的50％以上的聚烯烃树脂。 该基材包括含有无机风化稳定剂的无机耐候稳定剂层。 无机耐候稳定剂层的厚度为10μm以上但小于40μm。 无机耐候稳定剂含量占无机耐候稳定剂层的8重量％以上。 单位面积的无机耐候稳定剂含量为2.0g / m 2以上。

公开(公告)号：US20190249041A1

公开(公告)日：2019-08-15

申请号：US16394131

申请日：2019-04-25

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Yasunori Yamamoto

IPC: C09J123/06 ,  C09J7/24 ,  C09J7/40 ,  C09J7/38 ,  C09J123/12 ,  C09J123/08

CPC classification number: C09J123/06 ,  C08G2170/40 ,  C09J7/241 ,  C09J7/38 ,  C09J7/40 ,  C09J123/0853 ,  C09J123/12

Abstract: Provided is a PSA sheet that allows installation of a protection sheet with good shape precision on the surface of an object to be protected. The PSA sheet provided by this invention comprises a substrate whose primary component is a resin film and a PSA layer placed on one face of the substrate. The PSA sheet comprises a protection sheet part which is adhered to an adherend to protect it, a marginal part bounded from the protection sheet part by a tear-off line surrounding the protection sheet part, and a tear-aiding structure provided along the tear-off line. The PSA sheet is configured so that after the protection sheet part is adhered to the adherend, when the marginal part is pulled in a direction in which the PSA sheet is peeled off the adherend, the marginal part is torn off the protection sheet part.

公开(公告)号：US20180022965A1

公开(公告)日：2018-01-25

申请号：US15649708

申请日：2017-07-14

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Yasunori YAMAMOTO

IPC: C09J7/02 ,  C09J123/06 ,  C09J123/12 ,  C09J123/08

CPC classification number: C09J123/06 ,  C08G2170/40 ,  C09J7/241 ,  C09J7/38 ,  C09J7/40 ,  C09J123/0853 ,  C09J123/12

Abstract: Provided is a PSA sheet that allows installation of a protection sheet with good shape precision on the surface of an object to be protected. The PSA sheet provided by this invention comprises a substrate whose primary component is a resin film and a PSA layer placed on one face of the substrate. The PSA sheet comprises a protection sheet part which is adhered to an adherend to protect it, a marginal part bounded from the protection sheet part by a tear-off line surrounding the protection sheet part, and a tear-aiding structure provided along the tear-off line. The PSA sheet is configured so that after the protection sheet part is adhered to the adherend, when the marginal part is pulled in a direction in which the PSA sheet is peeled off the adherend, the marginal part is tom off the protection sheet part.

公开(公告)号：US20140023857A1

公开(公告)日：2014-01-23

申请号：US13938669

申请日：2013-07-10

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Toshitaka SUZUKI ,  Nao WAKAYAMA

IPC: C09J7/02

CPC classification number: C09J7/381 ,  C09J2201/622 ,  C09J2203/306 ,  C09J2423/00 ,  Y10T428/265 ,  Y10T428/2878

Abstract: The present invention provides a surface protection sheet comprising a support substrate and a PSA layer placed on the support substrate. The PSA constituting the PSA layer comprises a non-crosslinked rubber-based polymer as a base polymer, a tackifier resin (TH) having a softening point of 120° C. or above, and a tackifier resin (TL) having a softening point below 120° C. The mass ratio (TL/TH) of the tackifier resin (TL) content relative to the tackifier resin (TH) content has a value of 1.0 or larger and 30 or less.

Abstract translation: 本发明提供了一种表面保护片，其包括支撑衬底和放置在支撑衬底上的PSA层。 构成粘合剂层的PSA包括作为基础聚合物的非交联橡胶类聚合物，软化点为120℃以上的增粘树脂（TH）和软化点低于 120℃。增粘树脂（TL）含量相对于增粘树脂（TH）含量的质量比（TL / TH）为1.0以上且30以下。