公开(公告)号：US20220306822A1

公开(公告)日：2022-09-29

申请号：US17780087

申请日：2020-11-10

Applicant: KURARAY CO., LTD.

Inventor： Eiichi ISHIDA ,  Daisuke KODA ,  Toru ASADA ,  Shinichi TAKEMOTO ,  Shuhei YORIMITSU ,  Hiroyuki KAWAI

IPC: C08J5/24 ,  C08L23/16 ,  C08L7/00 ,  D06M15/356

Abstract: To provide surface-modified fibers and reinforcing fibers that are capable of enhancing the adhesiveness to rubber, without the use of resorcinol and formaldehyde, and a molded article using the same. Surface-modified fibers include fibers, and a surface-modifying layer covering at least a part of a surface of the fibers, and have a solid surface zeta potential on a surface of the surface-modifying layer of −20.0 to 30.0 mV.

公开(公告)号：US20210222036A1

公开(公告)日：2021-07-22

申请号：US17059103

申请日：2019-05-28

Applicant: KURARAY CO., LTD.

Inventor： Toru ASADA ,  Daisuke KODA ,  Shinichi TAKEMOTO ,  Hiroyuki KAWAI ,  Shuhei YORIMITSU

IPC: C09J109/00 ,  C08J5/06 ,  C08L9/00

Abstract: Reinforcing fibers containing hydrophilic fibers and an adhesive component, wherein at least a part of the surfaces of the hydrophilic fibers have the adhesive component, the adhesive component contains a modified conjugated diene rubber having a hydrogen-bonding functional group in a part of the conjugated diene rubber, and the number of the hydrogen-bonding functional groups in the modified conjugated diene rubber is 2 to 150 per molecule on average; a method for producing the reinforcing fibers; and a molded article using the reinforcing fibers.

公开(公告)号：US20230075020A1

公开(公告)日：2023-03-09

申请号：US17799724

申请日：2021-02-04

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa KUSUDO ,  Hiroyuki KAWAI ,  Takashi KATAYAMA ,  Shuhei YORIMITSU ,  Noriko KAWASHIMA ,  Daisuke KONISHI ,  Naoyuki YAGUCHI ,  Kenichi KOJIMA

IPC: C08J7/04 ,  B29C48/00 ,  B29C48/50 ,  C09D1/00

Abstract: To provide a waterproof sheet for civil engineering, having sufficient strength and elongation even at a low temperature of about −10° C. and having excellent adhesiveness to a structure such as a tunnel. Disclosed is a waterproof sheet for civil engineering, which has a layer (A) including a composition containing an ethylene-vinyl acetate copolymer (a1) and a thermoplastic resin (a2) other than the ethylene-vinyl acetate copolymer (a1), and a silica-containing layer containing silica, wherein the content of the ethylene-vinyl acetate copolymer (a1) in the composition is 30 to 95% by mass, the content of the thermoplastic resin (a2) is 5 to 70% by mass, and the absolute value of the difference between the SP value of the ethylene-vinyl acetate copolymer (a1) and the SP value of the thermoplastic resin (a2) is less than 0.70 (cal/cm3)1/2.