WO2010016466A1 - Rubber composition and tire using the composition - Google Patents

Rubber composition and tire using the composition Download PDF

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Publication number
WO2010016466A1
WO2010016466A1 PCT/JP2009/063760 JP2009063760W WO2010016466A1 WO 2010016466 A1 WO2010016466 A1 WO 2010016466A1 JP 2009063760 W JP2009063760 W JP 2009063760W WO 2010016466 A1 WO2010016466 A1 WO 2010016466A1
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Prior art keywords
rubber
rubber composition
tire
extraction residue
mass
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PCT/JP2009/063760
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French (fr)
Japanese (ja)
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好秀 河野
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株式会社ブリヂストン
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Priority to JP2010523851A priority Critical patent/JP5480141B2/en
Publication of WO2010016466A1 publication Critical patent/WO2010016466A1/en

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof

Definitions

  • the present invention relates to a rubber composition in which the amount of rubber component used is reduced and a tire using the rubber composition.
  • a rubber composition used for tires or the like contains a large amount of rubber as a raw material.
  • 50% by mass or more of the rubber composition is composed of a rubber component in which natural rubber and synthetic rubber are blended. . Therefore, these rubber compositions and tires using the rubber compositions are affected by rising crude oil prices, rubber failure due to bad weather, etc., resulting in increased raw material costs and a difficult supply of stable products. There is a risk of becoming.
  • Japanese Patent Application Laid-Open No. 2003-63206 describes so-called eco-tires in which 75% by weight or more of the total weight is made of raw materials made of resources other than petroleum. ing.
  • This invention is intended to advantageously solve the above-mentioned problems, and the rubber composition of this invention is characterized in that an extraction residue of soy milk is blended with a rubber component.
  • the usage-amount of the rubber component in a rubber composition can be reduced by mix
  • Okara which is a soy milk extraction residue, is an industrial waste with low availability that remains after the production of tofu, etc., and it is inexpensive and can be reduced in the amount of waste by blending it into a rubber composition. Therefore, it is suitable as an alternative raw material for rubber components (such as an extender for rubber compositions).
  • the moisture content of the extraction residue of the soymilk is 80% or less, particularly preferably 1 to 80%, more preferably 1 to 50%, and more preferably 1 to 30%. % Is more preferable.
  • the moisture content of the soymilk extract residue is more than 80%, the soymilk extract residue and the rubber component do not mix well when kneaded, and the soymilk extract residue may not be used as an alternative raw material for the rubber component.
  • the moisture content of the extraction residue of soy milk is 80% or less, the decay of the extraction residue of soy milk can be suppressed.
  • the moisture content of the extraction residue of soy milk is less than 1%, the energy required to reduce the moisture content of the extraction residue of soy milk to less than 1% increases and the production cost increases, and the extraction residue of soy milk increases. It becomes too dry and difficult to handle.
  • the moisture content is a value calculated by evaporating the moisture of the soymilk extraction residue (okara) with a known heater and measuring the weight change before and after the evaporation with a known means such as a balance.
  • the particle size of the extraction residue of the soymilk is preferably 0.02 to 300 ⁇ m.
  • the particle size is less than 0.02 ⁇ m, handling is difficult, and when the particle size is greater than 300 ⁇ m, the dispersibility in the rubber component is poor and the physical properties of the rubber composition are lowered.
  • the diameter of the lump is preferably 0.5 ⁇ m to 3 mm from the viewpoint of handleability and dispersibility.
  • the particle diameter and the diameter are obtained by measuring the particle diameter by laser diffraction (JIS Z8825-1), and the average of the major axis and the minor axis (taken as a sphere) of the particles is measured by the laser diffraction method. Is the value obtained.
  • the blending amount of the extraction residue of the soymilk is preferably 0.2 to 30 parts by mass, more preferably 1 to 20 parts by mass with respect to 100 parts by mass of the rubber component. preferable.
  • the rubber composition which can fully achieve reduction of the environmental load which is the objective of this invention can be provided by the compounding quantity of the extraction residue of soymilk being 0.2 mass part or more.
  • similar to the rubber composition which does not use an alternative raw material can be provided because the compounding quantity of the extraction residue of soymilk shall be 30 mass parts or less.
  • particles having an aspect ratio of 1 to 5 are called particles.
  • the extraction residue of the soymilk is preferably protein, and more preferably 30 to 55% by mass is protein. This is because if the amount of protein in the extraction residue of soy milk is large, the extraction residue of soy milk may rot during transportation and storage until the drying treatment.
  • the tire of the present invention is characterized in that at least a part thereof is composed of the rubber composition.
  • the rubber component is composed of a rubber composition blended with soy milk extraction residue, reducing the amount of rubber used and reducing the environmental burden while maintaining the performance of the tire. can do.
  • the present invention it is possible to provide an environmentally friendly rubber composition that can be manufactured with low environmental load and low cost without using a complicated manufacturing process. Moreover, the tire with a low environmental load using the said rubber composition can be provided.
  • the rubber composition according to the present invention is characterized in that the use amount of the rubber component is reduced by blending and kneading the extraction residue (okara) of soy milk, which is a residue after squeezing soy milk from soybeans, into the rubber component.
  • okara extraction residue
  • the rubber component is made of natural rubber, synthetic rubber, or a mixture thereof.
  • the synthetic rubber include styrene-butadiene copolymer rubber (SBR), polybutadiene rubber (BR), and poly rubber.
  • examples include isoprene rubber (IR), acrylonitrile-butadiene copolymer rubber (NBR), chloroprene rubber (CR), and butyl rubber (IIR).
  • the rubber composition of the present invention is optionally added to reinforcing fillers such as carbon black and silica, softeners such as aroma oil, vulcanization accelerators, vulcanization accelerators, anti-aging agents, etc. Additive may be included.
  • the extraction residue of soy milk is a residue after squeezing soy milk from soybeans, which is discharged in the production process of tofu and the like. This is the remaining residue that remains when producing soymilk by filtering.
  • the extraction residue of soy milk contains protein, fat, soluble nitrogen-free material, fiber, moisture, etc., and most of the extraction residue of soy milk discharged in the production process of tofu etc. is usually industrial It is discarded as waste.
  • the extraction residue of soy milk can be blended with the rubber component after adjusting the moisture content as necessary. Adjustment of the moisture content is known such as hot air drying, drum drying, filter press, hot plate drying, etc. It can carry out using the means of. Thus, by adjusting the water content, it is possible to prevent the decay of the extraction residue of soy milk and improve the storage stability, and to improve the kneadability between the extraction residue of soy milk and the rubber component.
  • the rubber composition of the present invention is not particularly limited except that the extraction residue of the soymilk is blended with the rubber component, and can be produced, for example, as follows.
  • the extraction residue of soymilk whose water content is adjusted by a known drying means is mixed with a rubber component together with an optional filler (carbon black, etc.) and additives and kneaded.
  • an optional filler carbon black, etc.
  • limiting in particular in the preparation method of the rubber composition of this invention For example, using a Banbury mixer, a roll, etc., the rubber component, the extraction residue of soy milk, and various compounding agents suitably selected as needed It can be prepared by kneading.
  • the tire of the present invention is characterized in that at least a part thereof is composed of the rubber composition, and other than that, it can be manufactured using the same manufacturing method as that of a normal tire.
  • FIG. 1 is a cross-sectional view of an example of the tire of the present invention.
  • the tire shown in FIG. 1 has a pair of bead portions 1, a pair of sidewall portions 2, and a tread portion 3 connected to both sidewall portions 2, and extends in a toroid shape between the pair of bead portions 1.
  • the carcass 4 that reinforces the parts 1, 2, and 3 and the belt 5 that is located on the outer side in the tire radial direction of the crown portion of the carcass 4 are provided.
  • the carcass 4 is composed of a single carcass ply, and a main body portion extending in a toroid shape between a pair of bead cores (wires) 6 disposed in the bead portion 1, and each bead core 6. And a folded portion wound up radially outward from the inner side to the outer side in the tire width direction.
  • the carcass 4 is composed of one carcass ply.
  • a plurality of carcass plies may be provided.
  • the belt 5 is composed of two belt layers.
  • the number of belt layers constituting the belt may be one or more, and is not limited thereto. Absent.
  • the tire of the present invention may further include a belt reinforcing layer made of a rubberized layer of cords arranged substantially parallel to the tire circumferential direction on the outer side in the tire radial direction of the belt 5. Further, an interlayer rubber can be provided between the belt reinforcing layer and the belt reinforcing layer.
  • the tire of the illustrated example is characterized by using a rubber composition in which at least the tread portion 3 is blended with the above-described extraction residue of soy milk.
  • examples of the member using the rubber composition include a tread rubber, a side rubber, a base rubber, a bead filler or a stiffener located on the radially outer side of the bead wire, a carcass or belt coating rubber, and the like.
  • an inert gas such as nitrogen, argon, helium, etc. can be used in addition to air having normal or oxygen partial pressure adjusted.
  • Example 1 Using a Banbury mixer, a rubber composition containing okara as an extraction residue of soy milk was prepared with the formulation shown in Table 1, and a known vulcanizing agent or the like (sulfur: 100 parts by mass of rubber component: 1 0.5 parts by mass, vulcanization accelerator: 2.9 parts by mass [CZ: 1.5 parts by mass, DPG: 1.2 parts by mass, DM: 0.2 parts by mass], ZnO: 2.0 parts by mass, stearin Acid: 1.0 part by mass, anti-aging agent 6C: 1.0 part by mass) and vulcanized by a conventional method, the elongation at break was measured by the following method. The results are shown in Table 1.

Abstract

Disclosed is a rubber composition wherein a substance serving as a substitute raw material for a rubber component is blended.  The rubber composition places little burden on the environment, and can be produced by simple processes at low cost.  A tire using the rubber composition is also disclosed.  The rubber composition is characterized in that an extraction residue of soy milk is blended into the rubber component.  The tire is characterized in that the rubber composition is at least partially used therein.  Preferably, the extraction residue of soy milk blended into the rubber component has a water content of 1-80%, more preferably a water content of 1-50%, and still more preferably a water content of 1-30%.

Description

ゴム組成物および該組成物を用いたタイヤRubber composition and tire using the composition
　本発明は、ゴム成分の使用量を低減したゴム組成物および該ゴム組成物を使用したタイヤに関するものである。 The present invention relates to a rubber composition in which the amount of rubber component used is reduced and a tire using the rubber composition.
　タイヤ等に使用するゴム組成物は多量のゴムを原料として含んでおり、例えば乗用車用空気入りタイヤの場合、ゴム組成物の５０質量％以上が天然ゴムと合成ゴムとを配合したゴム成分からなる。従って、これらのゴム組成物および当該ゴム組成物を使用したタイヤは、原油価格の高騰や天候不良によるゴムの不作等の影響を受け、原料コストが上昇したり、安定した製品の供給が困難となったりする恐れがある。 A rubber composition used for tires or the like contains a large amount of rubber as a raw material. For example, in the case of a pneumatic tire for passenger cars, 50% by mass or more of the rubber composition is composed of a rubber component in which natural rubber and synthetic rubber are blended. . Therefore, these rubber compositions and tires using the rubber compositions are affected by rising crude oil prices, rubber failure due to bad weather, etc., resulting in increased raw material costs and a difficult supply of stable products. There is a risk of becoming.
　また、近年では世界的に環境問題が重視される傾向にあり、特に地球温暖化防止の観点からＣＯ２の排出量の規制が強化され、石油資源の使用量の低減が求められていると共に、資源循環型社会の形成が求められている。 Moreover, in recent years, environmental problems tend to be emphasized globally. In particular, from the viewpoint of preventing global warming, regulations on CO 2 emissions have been strengthened, and reductions in the use of petroleum resources have been demanded. The formation of a resource recycling society is required.
　そこで、タイヤ製造時の石油資源の使用量を低減するため、例えば特開２００３－６３２０６号公報には、全重量の７５重量％以上を石油外資源からなる原材料で構成した、いわゆるエコタイヤが記載されている。 Therefore, in order to reduce the amount of petroleum resources used when manufacturing tires, for example, Japanese Patent Application Laid-Open No. 2003-63206 describes so-called eco-tires in which 75% by weight or more of the total weight is made of raw materials made of resources other than petroleum. ing.
　しかし、上記従来技術にかかるゴム組成物およびタイヤでは、石油資源の使用量は低減できるものの、製造工程が複雑になったり、石油資源の代替原料の単価が高かったりするため、必ずしも製造コストを低減できなかった。 However, in the rubber composition and tire according to the above-mentioned conventional technology, although the amount of petroleum resources used can be reduced, the manufacturing process becomes complicated and the unit price of alternative raw materials for petroleum resources is high, so the manufacturing cost is not necessarily reduced. could not.
　また、天然繊維等を代替原料として使用した場合には、代替原料自体に燃料・資源等としての利用可能性の余地があるという観点等から、代替原料に改良および選択の余地があった。 In addition, when natural fiber or the like is used as an alternative raw material, there is room for improvement and selection of the alternative raw material from the viewpoint that the alternative raw material itself has room for use as a fuel / resource.
　この発明は、上記課題を有利に解決することを目的とするものであり、この発明のゴム組成物は、ゴム成分に対して豆乳の抽出残渣を配合したことを特徴とする。このように、大豆から豆乳を絞った後の残渣（豆乳の抽出残渣）であるおからを配合することにより、ゴム組成物中のゴム成分の使用量を低減することができる。また、豆乳の抽出残渣であるおからは、豆腐等を製造した後に残る利用可能性の低い産業廃棄物であり、安価であると共にゴム組成物に配合することでその廃棄物量を低減することもできるので、ゴム成分の代替原料（ゴム組成物の増量材等）として適している。 This invention is intended to advantageously solve the above-mentioned problems, and the rubber composition of this invention is characterized in that an extraction residue of soy milk is blended with a rubber component. Thus, the usage-amount of the rubber component in a rubber composition can be reduced by mix | blending the okara which is a residue (soymilk extraction residue) after squeezing soymilk from soybean. Okara, which is a soy milk extraction residue, is an industrial waste with low availability that remains after the production of tofu, etc., and it is inexpensive and can be reduced in the amount of waste by blending it into a rubber composition. Therefore, it is suitable as an alternative raw material for rubber components (such as an extender for rubber compositions).
　ここで、本発明のゴム組成物は、前記豆乳の抽出残渣の含水率が８０％以下、特には１～８０％であることが好ましく、１～５０％であることがより好ましく、１～３０％であることが更に好ましい。豆乳の抽出残渣の含水率が８０％超の場合、豆乳の抽出残渣とゴム成分との混練時に両者が上手く混ざり合わず、豆乳の抽出残渣をゴム成分の代替原料として使用できない恐れがある。また、豆乳の抽出残渣の含水率を８０％以下とすることで、豆乳の抽出残渣の腐敗を抑制することができる。一方、豆乳の抽出残渣の含水率が１％未満の場合、豆乳の抽出残渣の含水率を１％未満まで低減させるために必要なエネルギーが大きくなり製造コストが増加すると共に、豆乳の抽出残渣が乾燥し過ぎて扱い難くなる。なお、含水率は、豆乳の抽出残渣（おから）の水分を既知のヒーターで蒸発させ、その蒸発前後の重量変化を天秤等の既知の手段で測定することにより算出される値である。 Here, in the rubber composition of the present invention, the moisture content of the extraction residue of the soymilk is 80% or less, particularly preferably 1 to 80%, more preferably 1 to 50%, and more preferably 1 to 30%. % Is more preferable. When the moisture content of the soymilk extract residue is more than 80%, the soymilk extract residue and the rubber component do not mix well when kneaded, and the soymilk extract residue may not be used as an alternative raw material for the rubber component. Moreover, by setting the moisture content of the extraction residue of soy milk to 80% or less, the decay of the extraction residue of soy milk can be suppressed. On the other hand, when the moisture content of the extraction residue of soy milk is less than 1%, the energy required to reduce the moisture content of the extraction residue of soy milk to less than 1% increases and the production cost increases, and the extraction residue of soy milk increases. It becomes too dry and difficult to handle. The moisture content is a value calculated by evaporating the moisture of the soymilk extraction residue (okara) with a known heater and measuring the weight change before and after the evaporation with a known means such as a balance.
　本発明のゴム組成物は、前記豆乳の抽出残渣の粒子径が０．０２～３００μｍであることが好ましい。粒子径が０．０２μｍ未満の場合は取り扱い難く、粒子径が３００μｍより大きい場合はゴム成分中での分散性が悪くゴム組成物の物性が低下する。ここで、前記豆乳の抽出残渣の粒子が凝集して塊状となっている場合、取り扱い性および分散性の観点から、該塊の直径は０．５μｍ～３ｍｍであることが好ましい。なお、粒子径および直径は、レーザー回折による粒子径測定（ＪＩＳ Ｚ８８２５－１）で求められ、該レーザー回折による方法において、粒子等の長軸－短軸の平均（球形と捉えられる）を測定して得られる値である。 In the rubber composition of the present invention, the particle size of the extraction residue of the soymilk is preferably 0.02 to 300 μm. When the particle size is less than 0.02 μm, handling is difficult, and when the particle size is greater than 300 μm, the dispersibility in the rubber component is poor and the physical properties of the rubber composition are lowered. Here, when the particles of the extraction residue of the soymilk are aggregated into a lump, the diameter of the lump is preferably 0.5 μm to 3 mm from the viewpoint of handleability and dispersibility. The particle diameter and the diameter are obtained by measuring the particle diameter by laser diffraction (JIS Z8825-1), and the average of the major axis and the minor axis (taken as a sphere) of the particles is measured by the laser diffraction method. Is the value obtained.
　本発明のゴム組成物は、前記豆乳の抽出残渣の配合量が、前記ゴム成分１００質量部に対して０．２～３０質量部であることが好ましく、１～２０質量部であることが更に好ましい。豆乳の抽出残渣の配合量を０．２質量部以上とすることで本発明の目的である環境負荷の低減を十分に達成し得るゴム組成物を提供することができる。また、豆乳の抽出残渣の配合量を３０質量部以下とすることで、代替原料を使用しないゴム組成物と近い性能を有するゴム組成物を提供することができる。 In the rubber composition of the present invention, the blending amount of the extraction residue of the soymilk is preferably 0.2 to 30 parts by mass, more preferably 1 to 20 parts by mass with respect to 100 parts by mass of the rubber component. preferable. The rubber composition which can fully achieve reduction of the environmental load which is the objective of this invention can be provided by the compounding quantity of the extraction residue of soymilk being 0.2 mass part or more. Moreover, the rubber composition which has the performance close | similar to the rubber composition which does not use an alternative raw material can be provided because the compounding quantity of the extraction residue of soymilk shall be 30 mass parts or less.
　なお、本明細書では、アスペクト比が１～５のものを粒子と呼んでいる。 In the present specification, particles having an aspect ratio of 1 to 5 are called particles.
　本発明のゴム組成物は、前記豆乳の抽出残渣の３０～６５質量％が蛋白質であることが好ましく、３０～５５質量％が蛋白質であることが更に好ましい。豆乳の抽出残渣中の蛋白質量が多い場合、乾燥処理を行うまでの輸送・保管中に豆乳の抽出残渣が腐敗することがあるからである。 In the rubber composition of the present invention, 30 to 65% by mass of the extraction residue of the soymilk is preferably protein, and more preferably 30 to 55% by mass is protein. This is because if the amount of protein in the extraction residue of soy milk is large, the extraction residue of soy milk may rot during transportation and storage until the drying treatment.
　また、本発明のタイヤは、少なくとも一部を上記ゴム組成物で構成したことを特徴とする。従来のタイヤではゴムのみで構成していた部分を、豆乳の抽出残渣を配合したゴム組成物で構成することにより、タイヤとしての性能を維持しつつゴムの使用量を低減して環境負荷を低減することができる。 Further, the tire of the present invention is characterized in that at least a part thereof is composed of the rubber composition. In the conventional tire, the rubber component is composed of a rubber composition blended with soy milk extraction residue, reducing the amount of rubber used and reducing the environmental burden while maintaining the performance of the tire. can do.
　本発明によれば、複雑な製造工程を用いることなく、低環境負荷および低コストで製造が可能な、環境に優しいゴム組成物を提供することができる。また、当該ゴム組成物を用いた、環境負荷が低いタイヤを提供することができる。 According to the present invention, it is possible to provide an environmentally friendly rubber composition that can be manufactured with low environmental load and low cost without using a complicated manufacturing process. Moreover, the tire with a low environmental load using the said rubber composition can be provided.
本発明のタイヤの一例の断面図である。It is sectional drawing of an example of the tire of this invention.
＜ゴム組成物＞
　以下に、本発明のゴム組成物を詳細に説明する。本発明に従うゴム組成物は、大豆から豆乳を絞った後の残渣である豆乳の抽出残渣（おから）をゴム成分に配合して混練することで、ゴム成分の使用量を低減したことを特徴とする。 <Rubber composition>
Below, the rubber composition of this invention is demonstrated in detail. The rubber composition according to the present invention is characterized in that the use amount of the rubber component is reduced by blending and kneading the extraction residue (okara) of soy milk, which is a residue after squeezing soy milk from soybeans, into the rubber component. And
　ここで、ゴム成分は、天然ゴム、合成ゴム、またはそれらを混合したものからなり、合成ゴムとしては、具体的には、スチレン－ブタジエン共重合体ゴム（ＳＢＲ）、ポリブタジエンゴム（ＢＲ）、ポリイソプレンゴム（ＩＲ）、アクリロニトリル－ブタジエン共重合体ゴム（ＮＢＲ）、クロロプレンゴム（ＣＲ）、ブチルゴム（ＩＩＲ）等が挙げられる。なお、本発明のゴム組成物は、任意に、カーボンブラックおよびシリカ等の補強性充填剤や、アロマオイル等の軟化剤、加硫促進剤、加硫促進助剤、老化防止剤等の一般に添加される添加剤等を含んでも良い。 Here, the rubber component is made of natural rubber, synthetic rubber, or a mixture thereof. Specific examples of the synthetic rubber include styrene-butadiene copolymer rubber (SBR), polybutadiene rubber (BR), and poly rubber. Examples include isoprene rubber (IR), acrylonitrile-butadiene copolymer rubber (NBR), chloroprene rubber (CR), and butyl rubber (IIR). The rubber composition of the present invention is optionally added to reinforcing fillers such as carbon black and silica, softeners such as aroma oil, vulcanization accelerators, vulcanization accelerators, anti-aging agents, etc. Additive may be included.
　豆乳の抽出残渣とは、豆腐等の製造工程で排出される、大豆から豆乳を絞った後の残渣であり、水に浸した大豆をすり潰し、該すり潰した大豆に水を加えて煮詰めた後にカスを濾すことで豆乳を製造する際に残る、残りカスである。そして、豆乳の抽出残渣には、蛋白質、脂肪、可溶無窒素物、繊維、水分等が含まれており、豆腐等の製造工程で排出される豆乳の抽出残渣の大部分は、通常、産業廃棄物として廃棄されている。なお、ゴム成分には、任意に、既知の防腐剤を混合した豆乳の抽出残渣を配合しても良い。 The extraction residue of soy milk is a residue after squeezing soy milk from soybeans, which is discharged in the production process of tofu and the like. This is the remaining residue that remains when producing soymilk by filtering. And the extraction residue of soy milk contains protein, fat, soluble nitrogen-free material, fiber, moisture, etc., and most of the extraction residue of soy milk discharged in the production process of tofu etc. is usually industrial It is discarded as waste. In addition, you may mix | blend the extraction residue of the soymilk which mixed the known antiseptic | preservative arbitrarily with a rubber component.
　豆乳の抽出残渣は、必要に応じて、含水率を調整した上でゴム成分に対して配合することができ、含水率の調整は、熱風乾燥、ドラム乾燥、フィルタープレス、熱板乾燥等の既知の手段を用いて行うことができる。このように、含水率を調整すれば、豆乳の抽出残渣の腐敗を防止して保存性を高めることができると共に、豆乳の抽出残渣とゴム成分との混練性を向上させることができる。 The extraction residue of soy milk can be blended with the rubber component after adjusting the moisture content as necessary. Adjustment of the moisture content is known such as hot air drying, drum drying, filter press, hot plate drying, etc. It can carry out using the means of. Thus, by adjusting the water content, it is possible to prevent the decay of the extraction residue of soy milk and improve the storage stability, and to improve the kneadability between the extraction residue of soy milk and the rubber component.
　本発明のゴム組成物は、上記豆乳の抽出残渣をゴム成分に配合した以外特に制限はなく、例えば、以下のようにして製造することができる。 The rubber composition of the present invention is not particularly limited except that the extraction residue of the soymilk is blended with the rubber component, and can be produced, for example, as follows.
　必要に応じて既知の乾燥手段で含水率を調整した豆乳の抽出残渣を、任意の充填剤（カーボンブラック等）および添加剤とともにゴム成分に配合して混練する。なお、本発明のゴム組成物の調製方法に特に制限はなく、例えば、バンバリーミキサーやロール等を用いて、ゴム成分に、豆乳の抽出残渣と、必要に応じて適宜選択した各種配合剤とを練り込んで調製することができる。 If necessary, the extraction residue of soymilk whose water content is adjusted by a known drying means is mixed with a rubber component together with an optional filler (carbon black, etc.) and additives and kneaded. In addition, there is no restriction | limiting in particular in the preparation method of the rubber composition of this invention, For example, using a Banbury mixer, a roll, etc., the rubber component, the extraction residue of soy milk, and various compounding agents suitably selected as needed It can be prepared by kneading.
＜タイヤ＞
　本発明のタイヤは、少なくとも一部を上記ゴム組成物で構成したことを特徴とし、それ以外は通常のタイヤと同様の製造方法を用いて製造することができる。 <Tire>
The tire of the present invention is characterized in that at least a part thereof is composed of the rubber composition, and other than that, it can be manufactured using the same manufacturing method as that of a normal tire.
　次に、本発明のタイヤを、図を参照しながら詳細に説明する。図１は、本発明のタイヤの一例の断面図である。図１に示すタイヤは、一対のビード部１及び一対のサイドウォール部２と、両サイドウォール部２に連なるトレッド部３とを有し、上記一対のビード部１間にトロイド状に延在してこれら各部１，２，３を補強するカーカス４と、該カーカス４のクラウン部のタイヤ半径方向外側に位置するベルト５とを具える。 Next, the tire of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an example of the tire of the present invention. The tire shown in FIG. 1 has a pair of bead portions 1, a pair of sidewall portions 2, and a tread portion 3 connected to both sidewall portions 2, and extends in a toroid shape between the pair of bead portions 1. The carcass 4 that reinforces the parts 1, 2, and 3 and the belt 5 that is located on the outer side in the tire radial direction of the crown portion of the carcass 4 are provided.
　図示例のタイヤにおいて、カーカス４は、一枚のカーカスプライからなり、上記ビード部１内に夫々配設した一対のビードコア（ワイヤ）６間にトロイド状に延在する本体部と、各ビードコア６の周りでタイヤ幅方向の内側から外側に向けて半径方向外方に巻上げた折り返し部とからなる。なお、図示例のカーカス４は、一枚のカーカスプライよりなるが、本発明のタイヤにおいては、カーカスプライの枚数は複数であってもよい。 In the illustrated tire, the carcass 4 is composed of a single carcass ply, and a main body portion extending in a toroid shape between a pair of bead cores (wires) 6 disposed in the bead portion 1, and each bead core 6. And a folded portion wound up radially outward from the inner side to the outer side in the tire width direction. In the illustrated example, the carcass 4 is composed of one carcass ply. However, in the tire of the present invention, a plurality of carcass plies may be provided.
　また、図示例のタイヤにおいて、ベルト５は、二枚のベルト層からなるが、本発明のタイヤにおいて、ベルトを構成するベルト層の枚数は一枚以上であればよく、これに限られるものではない。更に、本発明のタイヤは、ベルト５のタイヤ半径方向外側に、タイヤ周方向に対し実質的に平行に配列したコードのゴム引き層からなるベルト補強層を具えてもよく、ベルト５の端部と該ベルト補強層との間に更に層間ゴムを具えることもできる。 In the illustrated tire, the belt 5 is composed of two belt layers. However, in the tire of the present invention, the number of belt layers constituting the belt may be one or more, and is not limited thereto. Absent. Furthermore, the tire of the present invention may further include a belt reinforcing layer made of a rubberized layer of cords arranged substantially parallel to the tire circumferential direction on the outer side in the tire radial direction of the belt 5. Further, an interlayer rubber can be provided between the belt reinforcing layer and the belt reinforcing layer.
　そして、図示例のタイヤは、少なくともトレッド部３に、上述した豆乳の抽出残渣を配合したゴム組成物を用いることを特徴とする。 And the tire of the illustrated example is characterized by using a rubber composition in which at least the tread portion 3 is blended with the above-described extraction residue of soy milk.
　なお、上記ゴム組成物を用いる部材としては、トレッドゴムの他、サイドゴム、ベースゴム、ビードワイヤの半径方向外側に位置するビードフィラーないしスティフナー、カーカスやベルトのコーティングゴム等が挙げられる。 In addition, examples of the member using the rubber composition include a tread rubber, a side rubber, a base rubber, a bead filler or a stiffener located on the radially outer side of the bead wire, a carcass or belt coating rubber, and the like.
　また、本発明のタイヤに充填する気体としては、通常の或いは酸素分圧を調整した空気の他、窒素、アルゴン、ヘリウム等の不活性ガスを用いることができる。 Further, as a gas filled in the tire of the present invention, an inert gas such as nitrogen, argon, helium, etc. can be used in addition to air having normal or oxygen partial pressure adjusted.
［実施例］
　以下に、実施例を挙げて本発明を更に詳しく説明するが、本発明は下記の実施例に何ら限定されるものではない。 [Example]
Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the following examples.
（実施例１～９）
　バンバリーミキサーを用いて、表１に示す配合処方で、豆乳の抽出残渣としてのおからを含むゴム組成物を調製し、既知の加硫剤等（ゴム成分１００質量部に対して、硫黄：１．５質量部、加硫促進剤：２．９質量部［ＣＺ：１．５質量部、ＤＰＧ：１．２質量部、ＤＭ：０．２質量部］、ＺｎＯ：２．０質量部、ステアリン酸：１．０質量部、老化防止剤６Ｃ：１．０質量部）を配合して通常の方法で加硫した後に以下の方法で破断伸びを測定した。結果を表１に示す。なお、表中における「ゴム組成物中のおから含有率」は、下記式：
おから含有率＝おから配合量／（ゴム成分配合量＋カーボンブラック配合量＋おから配合量）×１００
に基づき算出し、配合量の少ない成分（加硫剤等）は無視した。 (Examples 1 to 9)
Using a Banbury mixer, a rubber composition containing okara as an extraction residue of soy milk was prepared with the formulation shown in Table 1, and a known vulcanizing agent or the like (sulfur: 100 parts by mass of rubber component: 1 0.5 parts by mass, vulcanization accelerator: 2.9 parts by mass [CZ: 1.5 parts by mass, DPG: 1.2 parts by mass, DM: 0.2 parts by mass], ZnO: 2.0 parts by mass, stearin Acid: 1.0 part by mass, anti-aging agent 6C: 1.0 part by mass) and vulcanized by a conventional method, the elongation at break was measured by the following method. The results are shown in Table 1. In addition, “Okara content in the rubber composition” in the table is the following formula:
Okara content = Okara compounding amount / (rubber component compounding amount + carbon black compounding amount + okara compounding amount) × 100
The components (such as vulcanizing agents) with a small amount were ignored.
（比較例１）
　バンバリーミキサーを用いて、表１に示す配合処方でおからを含まないゴム組成物を調製し、既知の加硫剤等（ゴム成分１００質量部に対して、硫黄：１．５質量部、加硫促進剤：２．９質量部［ＣＺ：１．５質量部、ＤＰＧ：１．２質量部、ＤＭ：０．２質量部］、ＺｎＯ：２．０質量部、ステアリン酸：１．０質量部、老化防止剤６Ｃ：１．０質量部）を配合して通常の方法で加硫した後に以下の方法で破断伸びを測定した。結果を表１に示す。 (Comparative Example 1)
Using a Banbury mixer, a rubber composition containing no okara was prepared according to the formulation shown in Table 1, and a known vulcanizing agent or the like (sulfur: 1.5 parts by mass with respect to 100 parts by mass of the rubber component) Sulfur accelerator: 2.9 parts by mass [CZ: 1.5 parts by mass, DPG: 1.2 parts by mass, DM: 0.2 parts by mass], ZnO: 2.0 parts by mass, stearic acid: 1.0 parts by mass Part, anti-aging agent 6C: 1.0 part by mass) and vulcanized by the usual method, and the elongation at break was measured by the following method. The results are shown in Table 1.
（破断伸び）
　実施例１～９および比較例１で作製したゴム組成物を１６０℃で１５分加硫して得た加硫ゴムに対し、株式会社東洋精機製作所製のストログラフを用いて、温度２５℃、引張速度１００ｍｍ／ｍｉｎの条件で破断伸びを測定した。 (Elongation at break)
For the vulcanized rubber obtained by vulcanizing the rubber compositions prepared in Examples 1 to 9 and Comparative Example 1 at 160 ° C. for 15 minutes, using a strograph made by Toyo Seiki Co., Ltd., a temperature of 25 ° C., The elongation at break was measured under the condition of a tensile speed of 100 mm / min.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
*1　乳化重合ＳＢＲ、ゴム成分１００質量部に対して３８質量部のアロマ油で油展
*2　旭カーボン株式会社製、Ｎ１１０
*3　おから：豆腐製造工場で排出されたおからを乾燥して含水率を調整したもの、含水率１０～９０％、組成［セルロース粒子／短繊維：脂肪質：蛋白質＝５：３：１０］、粒子径（凝集状態での粒子径も含む）２～５００μｍ * 1 Emulsion polymerization SBR, 38 parts by mass of aroma oil for 100 parts by mass of rubber component
* 2 N110 manufactured by Asahi Carbon Co., Ltd.
* 3 Okara: dried okara discharged from a tofu production plant, adjusted for moisture content, moisture content 10-90%, composition [cellulose particles / short fibers: fat: protein = 5: 3: 10 ], Particle diameter (including particle diameter in agglomerated state) 2 to 500 μm
　表１の実施例１～９および比較例１より、おからを増量材としてゴム組成物に配合しても、破断伸びは殆ど悪化しないことが分かった。なお、配合したおからの含水率が高い実施例６～８では、破断伸びは殆ど悪化しなかったが、混練（ゴム組成物の調製）に時間がかかり、ゴム組成物製造時のエネルギー効率が悪かった。 From Examples 1 to 9 and Comparative Example 1 in Table 1, it was found that even when okara was added to the rubber composition as an extender, the elongation at break hardly deteriorated. In Examples 6 to 8 in which the moisture content from the blended okara was high, the elongation at break hardly deteriorated, but it took time to knead (preparation of the rubber composition), and the energy efficiency at the time of manufacturing the rubber composition was high. It was bad.

Claims (6)

  1. 　ゴム成分に対して豆乳の抽出残渣を配合したことを特徴とする、ゴム組成物。 Rubber composition characterized by blending soymilk extraction residue with rubber component.
  2. 　前記豆乳の抽出残渣の含水率が８０％以下であることを特徴とする、請求項１に記載のゴム組成物。 The rubber composition according to claim 1, wherein a moisture content of the extraction residue of the soymilk is 80% or less.
  3. 　前記豆乳の抽出残渣の含水率が１～８０％であることを特徴とする、請求項２に記載のゴム組成物。 The rubber composition according to claim 2, wherein the moisture content of the extraction residue of the soymilk is 1 to 80%.
  4. 　前記豆乳の抽出残渣の粒子径が０．０２～３００μｍであることを特徴とする、請求項１に記載のゴム組成物。 2. The rubber composition according to claim 1, wherein the extraction residue of the soymilk has a particle size of 0.02 to 300 μm.
  5. 　前記豆乳の抽出残渣の配合量が、前記ゴム成分１００質量部に対して０．２～３０質量部であることを特徴とする、請求項１に記載のゴム組成物。 The rubber composition according to claim 1, wherein the blending amount of the extraction residue of the soymilk is 0.2 to 30 parts by mass with respect to 100 parts by mass of the rubber component.
  6. 　少なくとも一部を請求項１～５の何れかに記載のゴム組成物で構成したことを特徴とする、タイヤ。 A tire comprising at least a part of the rubber composition according to any one of claims 1 to 5.
PCT/JP2009/063760 2008-08-04 2009-08-03 Rubber composition and tire using the composition WO2010016466A1 (en)

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JP2018501364A (en) * 2014-12-18 2018-01-18 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー Rubber composition containing whey protein
US10227480B2 (en) 2014-12-18 2019-03-12 Bridgestone Americas Tire Operations, Inc. Rubber compositions containing whey protein
US10246581B2 (en) 2014-12-18 2019-04-02 Bridgestone Americas Tire Operations, Llc Rubber compositions containing whey protein
US10544268B2 (en) 2014-12-18 2020-01-28 Bridgestone Americas Tire Operations, Llc Rubber compositions containing carbon black and whey protein

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JPH09249761A (en) * 1995-09-14 1997-09-22 Daiko:Kk Manufacture of composite resin foam
JP2001251975A (en) * 2000-03-11 2001-09-18 Shihoro Tekko Kk Agricultural degradable mulch film and its laying method
JP2003335886A (en) * 2002-05-16 2003-11-28 Kizuna Corporation:Kk Process for preparing composite resin foam

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018501364A (en) * 2014-12-18 2018-01-18 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー Rubber composition containing whey protein
US10227480B2 (en) 2014-12-18 2019-03-12 Bridgestone Americas Tire Operations, Inc. Rubber compositions containing whey protein
US10233319B2 (en) 2014-12-18 2019-03-19 Bridgestone Americas Tire Operations, Llc Rubber compositions containing whey protein
US10246581B2 (en) 2014-12-18 2019-04-02 Bridgestone Americas Tire Operations, Llc Rubber compositions containing whey protein
US10544268B2 (en) 2014-12-18 2020-01-28 Bridgestone Americas Tire Operations, Llc Rubber compositions containing carbon black and whey protein
US11046824B2 (en) 2014-12-18 2021-06-29 Bridgestone Americas Tire Operations, Llc Rubber compositions containing carbon black and whey protein

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