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：US20190194429A1

公开(公告)日：2019-06-27

申请号：US16329975

申请日：2017-09-01

Applicant: KURARAY CO., LTD.

Inventor： Hiromi MAEDA ,  Daisuke KODA ,  Hiroshi KANBARA ,  Satomi OHTA

IPC: C08L9/06 ,  C08L15/00 ,  C08K3/013 ,  C08K3/04 ,  C08K3/36 ,  B60C1/00

CPC classification number: C08L9/06 ,  B60C1/00 ,  C08C19/25 ,  C08J3/24 ,  C08K3/013 ,  C08K3/04 ,  C08K3/36 ,  C08K2201/003 ,  C08L15/00 ,  C08L21/00 ,  C08L2312/00 ,  Y02T10/862

Abstract: Disclosed herein is a rubber composition containing 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound represented by the formula (1), and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying (i) to (iii): (i) a weight average molecular weight (Mw) is not less than 1,000 and less than 15,000; (ii) a vinyl content is not more than 70 mol %; and (iii) an average number of functional groups per molecule of the modified liquid diene rubber (B) is 1 to 20.

公开(公告)号：US20170009065A1

公开(公告)日：2017-01-12

申请号：US15125832

申请日：2015-03-10

Applicant: KURARAY CO., LTD.

Inventor： Daisuke KODA ,  Kei HIRATA

IPC: C08L9/06

Abstract: [Object]The invention provides rubber compositions having excellent filler dispersibility, crosslinked products having excellent properties such as abrasion resistance, and tires that exhibit enhanced rolling resistance performance and attain simultaneous enhancements in steering stability and ice grip performance by virtue of using the compositions or the crosslinked products in portions of the tires.[Solution]The rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 10 parts by mass of a modified liquid diene rubber (B) that is obtained by adding a modifying agent to an unmodified liquid diene rubber (B′) and has functional groups derived from the modifying agent, and 20 to 150 parts by mass of a filler (C). The modified liquid diene rubber (B) satisfies the following (i) to (iv): (i) the content of isoprene units is not less than 50 mass % relative to the total of all monomer units, (ii) the weight average molecular weight (Mw) is 25,000 to 120,000, (iii) the amount of the modifying agent added is 3 to 40 parts by mass per 100 parts by mass of the unmodified liquid diene rubber (B′), and (iv) the average number of functional groups per molecule of the modified liquid diene rubber (B) is 15 to 80.

Abstract translation: 橡胶组合物包括100质量份固体橡胶（A），0.1至10质量份改性液体二烯橡胶（B），其通过将改性剂加入未改性液体二烯橡胶（B'）和 具有来自改性剂的官能团，20〜150质量份填料（C）。 改性液态二烯橡胶（B）满足以下（i）〜（iv）：（i）相对于所有单体单元的总量，异戊二烯单元的含量不小于50质量％，（ii）重均分子量 重量（Mw）为25,000〜120,000，（iii）相对于100质量份未改性液态二烯系橡胶（B'），添加量为3〜40质量份，（iv） 每分子改性液体二烯橡胶（B）的官能团为15〜80。