公开(公告)号：US20240150628A1

公开(公告)日：2024-05-09

申请号：US18269201

申请日：2021-11-10

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: C09J109/10 ,  C09J11/06 ,  C09J11/08

CPC classification number: C09J109/10 ,  C09J11/06 ,  C09J11/08

Abstract: To provide an adhesive composition that can ensure a desired adhesion property without using resorcin and that does not impair workability during use, as well as a resin material, a rubber article, an organic fiber-rubber composite, and a tire using the adhesive composition. Provided is an adhesive composition containing (A) a rubber latex with unsaturated diene and (B) polylysine. Also provided are a resin material, a rubber article, an organic fiber-rubber composite, and a tire using this adhesive composition.

公开(公告)号：US20230048796A1

公开(公告)日：2023-02-16

申请号：US17787063

申请日：2020-12-17

Applicant: BRIDGESTONE CORPORATION ,  Spiber Inc.

Inventor： Masaaki NAKAMURA

IPC: C09J107/00 ,  C09J109/06 ,  C09J7/38 ,  C09J7/20

Abstract: Provided is a fiber for rubber reinforcement that can be produced using a bio-derived raw material and hardly breaks even when compounded with a rubber material. A first fiber for rubber reinforcement uses a protein fiber containing a hydrophobic protein. A second fiber for rubber reinforcement uses a protein fiber having an initial tensile modulus of elasticity of 2.0 GPa or more when wet. These fibers for rubber reinforcement preferably have a coating layer made of a water-based adhesive composition on the surface thereof.

公开(公告)号：US20220063415A1

公开(公告)日：2022-03-03

申请号：US17414505

申请日：2019-12-17

Applicant: BRIDGESTONE CORPORATION

Inventor： Yasumichi WAKAO ,  Masaaki NAKAMURA ,  Takahisa SHIZUKU

IPC: B60L5/00 ,  B60C9/00 ,  B60C9/22 ,  B60M7/00

Abstract: The carcass of the pneumatic tire includes a plurality of carcass cords formed of conductors and arranged along the tire radial direction and the tire width direction, and a circumferential cord formed of conductors and arranged along the tire circumferential direction. The circumferential cord contacts the carcass cord.

公开(公告)号：US20250002763A1

公开(公告)日：2025-01-02

申请号：US18698941

申请日：2022-10-13

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: C09J109/08 ,  B60C1/00 ,  C08K3/16 ,  C08K5/098 ,  C08K5/1515 ,  C08K5/33

Abstract: Provided is to an adhesive composition that can ensure desired adhesiveness without using resorcin and does not impair workability in use. The adhesive composition contains (A) a rubber latex having unsaturated diene, and (B) a polyvalent metal salt, and further contains at least one component selected from the group consisting of (C) an aqueous component having a plurality of phenolic hydroxy groups in molecule, (D) a water-soluble component containing an amide bond structure, (E) an amine compound, and (F) polyvinyl alcohol.

公开(公告)号：US20240117224A1

公开(公告)日：2024-04-11

申请号：US18257100

申请日：2021-09-29

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: C09J109/10 ,  B60C1/00 ,  C09J11/06 ,  C09J11/08

CPC classification number: C09J109/10 ,  B60C1/00 ,  C09J11/06 ,  C09J11/08 ,  C09J2301/408 ,  C09J2400/263

Abstract: Provided is an adhesive composition for organic fibers that has low burden on the environment, has good operability, and can improve the adhesion between an organic fiber and a coated rubber composition. The adhesive composition for organic fibers contains (A) rubber latex having unsaturated diene, (B) polypeptide, and at least one compound selected from the group consisting of (C) an aqueous compound having a (thermal dissociative blocked) isocyanate group, (D) an epoxide compound, and (E) polyphenol, where no resorcin is contained.

公开(公告)号：US20230407147A1

公开(公告)日：2023-12-21

申请号：US18255871

申请日：2021-11-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Yuka TAKAHASHI ,  Masaaki NAKAMURA

IPC: C09J121/02 ,  B60C9/00 ,  C09J11/06

CPC classification number: C09J121/02 ,  B60C9/0042 ,  C09J11/06

Abstract: Provided is an adhesive composition capable of achieving excellent adhesion and mechanical stability even when it contains no formalin or resorcin. The adhesive composition contains (A) rubber latex, and (B) a compound having an acrylamide structure.

公开(公告)号：US20230183530A1

公开(公告)日：2023-06-15

申请号：US17921387

申请日：2021-04-23

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: C09J109/08 ,  D06M15/693 ,  B60C9/00 ,  C09J11/08

CPC classification number: C09J109/08 ,  D06M15/693 ,  B60C9/0042 ,  C09J11/08 ,  D06M2101/32

Abstract: Provided is an adhesive composition for organic fiber cords containing (A) synthetic rubber latex having unsaturated diene, (B) gelatin, and (C) an aqueous compound having a (thermal dissociative blocked) isocyanate group and containing no resorcin or formaldehyde, which has the following effects: (1) causing little damage to the environment by using no resorcin or formaldehyde, (2) in a process of coating an organic fiber cord with the adhesive composition for organic fiber cords and drying and heat curing, it is possible to suppress the adhesion of the adhesive composition for organic fiber cords to a roller or the like, thereby achieving good operability, and (3) achieving good adhesion between an organic fiber cord and a coated rubber composition.

公开(公告)号：US20200156411A1

公开(公告)日：2020-05-21

申请号：US16619680

申请日：2018-06-19

Applicant: BRIDGESTONE CORPORATION

Inventor： Eisuke AIKAWA ,  Masaaki NAKAMURA

IPC: B60C9/20 ,  B60C9/00

Abstract: A pneumatic tire includes a belt having an intersecting belt with a wide belt layer, a narrow belt layer, and a reinforcing layer between the wide belt layer and the narrow belt layer. A widthwise inner end of the reinforcing layer is on an inner side of the narrow belt layer, a widthwise outer end of the reinforcing layer is on an outer side of the narrow belt layer but on the inner side of the wide belt layer; core-sheath type composite fibers, whose core portion is composed of a high-melting-point resin having a melting point of 150° C. or higher and sheath portion composed of resin material containing an olefin-based polymer having a melting point not higher than tire vulcanization temperature, are embedded in the reinforcing layer; and an angle of the core-sheath type composite fibers is substantially the same as a reinforcing cord of the narrow belt layer.

公开(公告)号：US20190023075A1

公开(公告)日：2019-01-24

申请号：US15752784

申请日：2016-08-16

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: B60C9/00 ,  C08J5/00 ,  C08L21/00

Abstract: An object of the present invention is to provide: a rubber-fiber composite obtained by coating a core-sheath fiber with a rubber, in which adhesion between the rubber and the fiber is improved and which is thereby allowed to exhibit an improved durability as compared to conventional rubber-fiber composites when used as a reinforcing material; a rubber-resin composite; and a pneumatic tire using the same. The rubber-fiber composite is obtained by coating a reinforcing material with a rubber, which reinforcing material is composed of a core-sheath type composite fiber whose core portion is constituted by a high-melting-point resin having a melting point of 150° C. or higher and sheath portion is constituted by an olefin-based polymer having a melting point lower than that of the high-melting point resin.

公开(公告)号：US20180304691A1

公开(公告)日：2018-10-25

申请号：US15767819

申请日：2016-10-14

Applicant: BRIDGESTONE CORPORATION

Inventor： Masaaki NAKAMURA

IPC: B60C9/12 ,  B60C9/00 ,  C08K7/02 ,  C08L21/00 ,  B60C9/02 ,  B29D30/48

CPC classification number: B60C9/12 ,  B29D30/48 ,  B60C9/00 ,  B60C9/0042 ,  B60C9/023 ,  B60C15/06 ,  B60C2009/0269 ,  B60C2015/0692 ,  C08K7/02 ,  C08L21/00 ,  D01F8/06

Abstract: Provided are: a rubber-reinforcing fiber, in which adhesion between a rubber and a fiber is enhanced and which is thereby capable of further improving the durability than before when used as a reinforcing material; a rubber-fiber composite; and a pneumatic tire using the same. The rubber-reinforcing fiber includes a core-sheath type composite fiber whose core portion is composed of a high-melting-point resin (A) having a melting point of 150° C. or higher and sheath portion is composed of a resin material (B) having a melting point lower than that of the high-melting point resin (A). The resin material (B) contains an olefin-based polymer (X) and a vulcanization accelerator (F).