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    • 99. 发明申请
    • RUBBER COMPOSITIONS
    • 橡胶组合物
    • US20170073509A1
    • 2017-03-16
    • US15125420
    • 2015-03-10
    • KURARAY CO., LTD.
    • Daisuke KODAKei HIRATA
    • C08L9/06
    • C08L9/06B60C1/00C08C19/28C08F136/06C08F236/06C08K3/06C08K3/36C08K5/09C08K5/47C08K5/548C08L7/00C08L15/00C08L91/00C08L91/06C08L2205/06Y02T10/862C08F236/08
    • [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 butadiene 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 5 to 80.
    • 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)丁二烯单元的含量相对于全部单体单元的总量为50质量%以上,(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5〜80。