JP5389527B2 - ゴム組成物及び空気入りタイヤ - Google Patents
ゴム組成物及び空気入りタイヤ Download PDFInfo
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- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
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- 229910052788 barium Inorganic materials 0.000 description 1
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- 229910017052 cobalt Inorganic materials 0.000 description 1
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- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
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- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Description
・BR−1:ランクセス社製のネオジム触媒ブタジエンゴム「Buna CB 22」, ムーニー粘度(ML1+4(100℃))63, シス−1,4結合含有率>96%, 1,2−ビニル基含有率<1%、
・BR−2:ランクセス社製のネオジム触媒ブタジエンゴム「Buna CB 24」, ムーニー粘度(ML1+4(100℃))44, シス−1,4結合含有率>96%, 1,2−ビニル基含有率<1%、
・BR−3:宇部興産社製のコバルト触媒ブタジエンゴム「BR150L」, ムーニー粘度(ML1+4(100℃))43, シス−1,4結合含有率98%, 1,2−ビニル基含有率1%、
・カーボンブラック:東海カーボン株式会社製「シースト6」(N220,ISAF)、
・パラフィンオイル:株式会社ジャパンエナジー製「JOMOプロセスP200」。
・加工助剤2:飽和脂肪酸亜鉛塩、ラインケミー社製「アクチプラストPP」、
・非処理植物性粒状体:クルミ殻粉砕物(株式会社日本ウォルナット製「ソフトグリット#80」)をそのまま用いたもの、
・表面処理植物性粒状体:クルミ殻粉砕物(株式会社日本ウォルナット製「ソフトグリット#60」)に対し、特開平10−7841号公報に記載に方法に準じてRFL処理液で表面処理を施したもの(処理後の植物性粒状体の粒子径は200〜300μm)。
Claims (5)
- シス−1,4結合含有率が96%以上、かつビニル基含有率が1%未満であるブタジエンゴム20〜60重量%と、天然ゴムまたはイソプレンゴム40〜80重量%とからなるジエン系ゴム成分100重量部に対し、しゃく解剤を脂肪酸金属塩中に予め混合してなる加工助剤を0.2〜3重量部、平均粒径が0.1〜500μmであってモース硬度2〜5の植物性粒状体を1〜30重量部配合してなるゴム組成物。
- 前記しゃく解剤が2,2’−ジベンズアミドジフェニルジスルフィド(DBD)である請求項1記載のゴム組成物。
- 前記ブタジエンゴムが、ネオジウム触媒を用いて合成されたものである請求項1または2記載のゴム組成物。
- 前記植物性粒状体として、レゾルシン・ホルマリン樹脂初期縮合物とラテックスの混合物を主成分とするゴム接着性改良剤の樹脂液で表面処理した植物性粒状体と、表面処理をしないままの非処理の植物性粒状体とを、3:7〜6:4の重量比で併用する請求項1〜3のいずれかに記載のゴム組成物。
- 請求項1〜4のいずれかに記載のゴム組成物からなるトレッドを備えた空気入りタイヤ。
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JP6130253B2 (ja) * | 2013-07-12 | 2017-05-17 | 東洋ゴム工業株式会社 | ゴムマスターバッチの製造方法 |
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JP3879031B2 (ja) * | 1996-06-27 | 2007-02-07 | 東洋ゴム工業株式会社 | タイヤトレッド用ゴム組成物 |
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US10179479B2 (en) | 2015-05-19 | 2019-01-15 | Bridgestone Americas Tire Operations, Llc | Plant oil-containing rubber compositions, tread thereof and race tires containing the tread |
US20220403142A1 (en) * | 2021-06-22 | 2022-12-22 | Toyo Tire Corporation | Rubber composition for tires and pneumatic tire |
US11926734B2 (en) * | 2021-06-22 | 2024-03-12 | Toyo Tire Corporation | Rubber composition for tires and pneumatic tire |
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