JP2019089911A - Rubber composition for tire and tire - Google Patents

Abstract

To provide a rubber composition for tire capable of achieving both of low rolling resistance and WET performance at high level, and a tire achieving both of low rolling resistance and WET performance at high level.SOLUTION: There is provided a rubber composition for tire containing a rubber component containing at least a rubber component A and a rubber component B, and a filler which is carbon black and/or silica, consisting of 2 or more polymer phases having different distribution factor of the filler, in which the rubber components A and B constitute polymer phases A and B respectively, 85% or more of total blended amount of the filler exists in the polymer phase A, a peak A of tanδ of the polymer phase A and a peak B of tanδ of the polymer phase B exist in a tanδ curve of a vulcanizate of the rubber composition for tire, temperature of the peak A is higher than that of the peak B, and temperature difference of the peak A and the peak B is 45°C or higher. There is provided a tire using the rubber composition for tire.SELECTED DRAWING: None

Description

  The present invention relates to a rubber composition for a tire and a tire.

  In the past, low rolling resistance and wet performance (grip performance on wet road surfaces) have been said to be in a trade-off relationship, but in recent years tires have been developed that are highly compatible with them.

  For example, Patent Document 1 aims to provide a method for producing a rubber composition capable of improving wet grip performance, and is crosslinked with 20 to 150 parts by mass of silica with respect to 100 parts by mass of a rubber component. In order to obtain a rubber composition containing 1 to 10 parts by mass of polymer gel which is a diene-based polymer particle, a styrene butadiene rubber, a butadiene rubber and a functional group having an interaction with silica are introduced as 100 parts by mass of the rubber component. A functional group of the modified diene-based rubber as the polymer gel, using 30 to 90 parts by weight of at least one type of modified diene-based rubber selected from the group consisting of natural rubbers and 70 to 10 parts by weight of non-modified diene-based rubber The polymer gel together with the silica, using the one having a functional group having an interaction with the group, and the whole amount of the modified diene-based rubber A first step of obtaining a first mixture by mixing, proposes a method of manufacturing a rubber composition comprising a second step of mixing the non-modified diene rubber in a first mixture obtained, the.

JP, 2016-079287, A

  However, the balance between the low rolling resistance and the wet performance may depend on the road surface shape such as the unevenness of the road surface, and there is still room for improvement.

  Accordingly, the present invention provides a tire rubber composition that is highly compatible with low rolling resistance and wet performance, and provides a tire that is highly compatible with low rolling resistance and wet performance. With the goal.

The rubber composition for a tire according to the present invention is
A rubber composition for a tire, comprising a rubber component and a filler,
The rubber component contains at least a rubber component A and a rubber component B,
The filler is one or more selected from the group consisting of carbon black and silica,
The rubber composition for a tire is composed of two or more polymer phases having different filler distribution rates,
The rubber component A constitutes a polymer phase A,
The rubber component B constitutes a polymer phase B,
85% or more of the total content of the filler is present in the polymer phase A,
In a tan δ curve of a vulcanized product of the rubber composition for a tire, a peak A of tan δ of the polymer phase A and a peak B of tan δ of the polymer phase B are present,
The temperature of peak A is higher than the temperature of peak B,
It is a rubber composition for tires whose temperature difference of peak A and peak B is 45 ° C or more.
According to the rubber composition for a tire according to the present invention, low rolling resistance and wet performance can be highly compatible.

  In the rubber composition for a tire according to the present invention, the temperature of the peak A is preferably in the range of -30 to 30 ° C. This further enhances WET performance while maintaining low rolling resistance.

  In the rubber composition for a tire according to the present invention, the rubber component A preferably has a modifying group that interacts with the filler. Thereby, the low rolling resistance and the handling property on a dry road surface (hereinafter sometimes simply referred to as "DRY-H") are improved.

  The rubber composition for a tire according to the present invention is obtained by kneading the rubber component A, the filler, and at least one selected from the group consisting of thermoplastic resins, inorganic substances and crushed vulcanized rubbers. It is manufactured using a masterbatch, and it is preferable that the glass transition temperature (Tg) of the said thermoplastic resin is higher than the glass transition temperature (Tg) of the said rubber component A. This further enhances the WET performance.

  The rubber composition for a tire according to the present invention is obtained by kneading the masterbatch, the rubber component B, and one or more selected from the group consisting of an oil and a softener, and the oil and the softener The glass transition temperature (Tg) of the rubber component B is preferably lower than the Tg of the rubber component B. This further improves the low rolling resistance and the wet performance.

  In the rubber composition for a tire according to the present invention, the temperature of the peak A is preferably in the range of 0 ° C. or more. This further enhances the WET performance.

  In the rubber composition for a tire according to the present invention, the difference between the Tg of the rubber component A and the glass transition temperature (Tg) of the rubber component B is 30 ° C. or more, and the Tg of the rubber component A is a rubber component Preferably, it is higher than the Tg of B. This further improves the low rolling resistance and the wet performance.

  In the rubber composition for a tire according to the present invention, the Tg of the rubber component B is preferably -50 ° C or less. This further improves the low rolling resistance and the wet performance.

  In the rubber composition for a tire according to the present invention, the compounding amount of the rubber component B is preferably equal to or more than the compounding amount of the rubber component A. This further improves the low rolling resistance and the wet performance.

  In the rubber composition for a tire according to the present invention, the rubber component A is preferably a styrene butadiene rubber. This further improves the low rolling resistance and the wet performance.

  The rubber composition for a tire according to the present invention is manufactured using a masterbatch obtained by kneading the rubber component A and the filler, and the compounding amount of the filler is compounded to the rubber composition for a tire. It is preferable that it is 85% or more of the total compounding quantity of the filler. This further improves the low rolling resistance and the wet performance.

The tire according to the present invention is a tire using the rubber composition for a tire.
According to the tire of the present invention, low rolling resistance and wet performance can be highly compatible.

  According to the present invention, it is possible to provide a rubber composition for a tire that is highly compatible with low rolling resistance and wet performance. Further, according to the present invention, it is possible to provide a tire in which low rolling resistance and wet performance are highly compatible.

  Hereinafter, embodiments of the present invention will be described. These descriptions are intended to illustrate the present invention and do not limit the present invention.

  In the present invention, the distribution ratio (%) of the filler of the polymer phase A of the rubber composition for a tire, that is, the ratio of the filler present in the polymer phase A to the total blending amount of the filler is determined as follows. About the vulcanized product of the rubber composition for a tire, the smooth surface of the sample cut by the microtome is imaged using an atomic force microscope (AFM) in an arbitrary measurement range of 2 μm × 2 μm. Based on the image obtained by converting the obtained image into each polymer phase and the filler portion from the histogram, the filler area contained in each of the polymer phases is determined, and the polymer phase A (the filler is the largest with respect to the total amount of fillers in the image) Calculate the proportion of the filler in the existing phase) and let it be the distribution rate (%). When a filler is present at the interface of the polymer phase, it is assumed that the filler is included on the side of the polymer phase in contact with more. In the calculation, the fillers in contact with the end (edge) of the image are not counted, and fillers of 9 pixels or less are not counted as noise.

  In the present invention, the tan δ (loss tangent) curve of the vulcanized product of the rubber composition for a tire has a frequency of 52 Hz, an initial strain of 2%, a dynamic strain of 1%, 3 ° C./3° C. using a dynamic tensile viscoelasticity tester. The graph shows tan δ on the vertical axis and temperature on the horizontal axis, obtained by measuring the value of tan δ at −100 ° C. to 70 ° C. at a temperature rising rate of 1 min. The temperature of the peak in the tan δ curve refers to the temperature of the peak apex.

  In the present invention, Tg is determined by differential scanning calorimetry (DSC). DSC measurement is performed on the conditions heated up by 10 degrees C / min, after cooling to -150 degreeC.

(Rubber composition for tires)
The rubber composition for a tire according to the present invention is
A rubber composition for a tire, comprising a rubber component and a filler,
The rubber component contains at least a rubber component A and a rubber component B,
The filler is one or more selected from the group consisting of carbon black and silica,
The rubber composition for a tire is composed of two or more polymer phases having different filler distribution rates,
The rubber component A constitutes a polymer phase A,
The rubber component B constitutes a polymer phase B,
85% or more of the total content of the filler is present in the polymer phase A,
In a tan δ curve of a vulcanized product of the rubber composition for a tire, a peak A of tan δ of the polymer phase A and a peak B of tan δ of the polymer phase B are present,
The temperature of peak A is higher than the temperature of peak B,
It is a rubber composition for tires whose temperature difference of peak A and peak B is 45 ° C or more.

<Rubber component>
The rubber composition for a tire according to the present invention contains at least a rubber component A and a rubber component B as a rubber component.

  The rubber component A constitutes the polymer phase A, and in the polymer phase A, 85% or more of the total blending amount of the filler in the tire rubber composition is present. On the other hand, rubber component B constitutes polymer phase B. The distribution ratio of the filler of the polymer phase A is 85% or more, and therefore, the polymer phase B contains 15% or less of the total content of the filler in the tire rubber composition. Further, in the tan δ curve of the vulcanized product for a tire rubber composition, the peak A of tan δ of polymer phase A and the peak B of tan δ of polymer phase B are present, and the temperature of peak A is higher than the temperature of peak B The temperature difference between peak A and peak B is 45 ° C. or higher. While not wishing to be bound by theory, it is thus preferred that polymer phase A has more fillers while polymer phase B has less fillers and the temperature difference between peak A and peak B is 45 The difference in rigidity between the polymer phase A and the polymer phase B is increased due to the temperature being at least ° C. (stiffness of the polymer phase A> stiffness of the polymer phase B), and the polymer phase A has a scratching effect on minute projections on the WET road surface. As a result, it is presumed that the low rolling resistance and the wet performance can be highly compatible by expressing the grip on a wet road surface while maintaining the low rolling resistance.

  The distribution ratio of the filler of polymer phase A is 85% or more of the total content of the filler, but the rigidity difference between polymer phase A and polymer phase B is increased, and low rolling resistance and wet performance are more highly compatible. 90% or more is preferable from the viewpoint of

  The distribution ratio of the filler of polymer phase B is 15% or less of the total content of the filler based on the distribution ratio of filler of polymer phase A, but the rigidity difference between polymer phase A and polymer phase B is increased, and low rolling resistance 10% or less is preferable from the viewpoint of achieving a high degree of compatibility between the properties and the wet performance.

  It is preferable that the temperature of the said peak A exists in the range of -30-30 degreeC, and, as for the rubber composition for tires which concerns on this invention, it is more preferable to exist in the range of -5-15 degreeC. As a result, the difference in rigidity between the polymer phase A and the polymer phase B is increased, and WET performance is further enhanced while maintaining low rolling resistance.

  It is preferable that the temperature of the said peak A exists in the range of 0 degreeC or more, and, as for the rubber composition for tires which concerns on this invention, it is more preferable to exist in the range of 0-15 degreeC. As a result, the difference in rigidity between the polymer phase A and the polymer phase B is increased, and the WET performance is further enhanced.

  In one embodiment, the temperature difference between peak A and peak B is 45 ° C to 65 ° C.

<< Rubber component A >>
The rubber component A is not particularly limited as long as it can form a polymer phase A different from the polymer phase B of the rubber component B, that is, it can form a phase incompatible with the polymer phase B. It can be selected appropriately and used.

  Examples of the rubber component A include styrene butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), synthetic isoprene rubber (IR), and modified products thereof.

  In the rubber composition for a tire according to the present invention, the rubber component A is preferably a styrene butadiene rubber. This further improves the low rolling resistance and the wet performance.

  In the rubber composition for a tire according to the present invention, the rubber component A preferably has a modifying group that interacts with the filler. As a result, more filler is present in the polymer phase A, the polymer phase A becomes harder than the polymer phase B, and the filler is more uniformly dispersed in the polymer phase A, resulting in low rolling resistance and DRY. -H improves.

  Examples of the modifying group that interacts with the filler include a covalent bond, an intermolecular force (ion-dipole interaction, dipole-dipole interaction, hydrogen, etc., between the modifying group and the surface of the filler (eg, silica). It means a functional group capable of forming bonding, intermolecular force such as van der Waals force, and the like. Preferred examples of the modifying group having high interaction with the filler (eg, silica) include nitrogen-containing functional groups, silicon-containing functional groups, oxygen-containing functional groups and the like.

  As a modifier for introduce | transducing a modified group to a rubber component, it can select suitably from the well-known modifier which has the modified functional group mentioned above, and can be used. As such a modifier, for example, alkoxysilane compounds of the general formula (I) described in JP-A-2016-160422; general formulas (III), (IV), (V), (V), (VI), ( VII), (VIII), (IX), and hydrocarbyloxysilane compounds of (X), and the like. The modification method may be appropriately selected from known methods, and, for example, the modification method described in the above-mentioned JP-A-2016-160422 may be employed.

  As a method for preparing modified SBR, for example, JP-A-2010-525087, JP-A-11-080514, JP-A-2003-535174, JP-A-2006-524725, JP-A-2010-531374, The methods described in JP-A-2010-531375, JP-A-2012-513516, WO 2016/194316 and the like can be mentioned.

The modifier used for modification is explained.
The modifier is preferably a modifier containing a functional group having an interaction with the filler (for example, silica), and is a modifier having at least one atom selected from a silicon atom, a nitrogen atom and an oxygen atom. It is particularly preferable that the modifier has a silicon atom and an oxygen atom, or a modifier having a silicon atom and a nitrogen atom in one molecule, and a modifier having a silicon atom, an oxygen atom and a nitrogen atom in one molecule. Most preferably.

（式中、Ｒ¹及びＲ²は、それぞれ独立に炭素数１〜２０の一価の脂肪族炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基を示し、ａは０〜２の整数であり、ＯＲ²が複数ある場合、複数のＯＲ²はたがいに同一でも異なっていてもよく、また分子中には活性プロトンは含まれない。） From the viewpoint of having high affinity to the filler (for example, silica), the modifier is preferably an alkoxysilane compound.
And although the said alkoxysilane compound is not specifically limited, It is more preferable that it is an alkoxysilane compound represented by the following general formula (I).

(Wherein, R ¹ and R ² each independently represent a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms; When it is an integer of ^{2 and} there is a plurality of OR ² , the plurality of OR ² may be identical or different from each other, and the molecule does not contain an active proton.)

Here, specific examples of the alkoxysilane compound represented by the above general formula (I) include, for example, N- (1,3-dimethylbutylidene) -3- (triethoxysilyl) -1-propanamine, tetra Methoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetraisopropoxysilane, tetra-n-butoxysilane, tetraisobutoxysilane, tetra-sec-butoxysilane, tetra-tert-butoxysilane, methyltrimethoxysilane, Methyltriethoxysilane, methyltripropoxysilane, methyltriisopropoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltripropoxysilane, ethyltriisopropoxysilane, ethyltriisopropoxysilane, propyltrimethoxysilane, propyltriethoxysilane Propyltripropoxysilane, propyltriisopropoxysilane, butyltrimethoxysilane, butyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dimetricdimethoxysilane, methylphenyldimethoxysilane, dimethyldiethoxysilane, vinyltrimethoxysilane , Vinyltriethoxysilane, divinyldiethoxysilane, and the like.
Among these, N- (1,3-dimethylbutylidene) -3- (triethoxysilyl) -1-propanamine, tetraethoxysilane, methyltriethoxysilane and dimethyldiethoxysilane are preferable. One of these may be used alone, or two or more may be used in combination.

Further, from the viewpoint of having high affinity to the filler (silica), the modifying agent may be a hydrocarbyloxysilane compound.
The hydrocarbyloxysilane compound is preferably a hydrocarbyloxysilane compound represented by the following general formula (II).

一般式（ＩＩ）中、ｎ１＋ｎ２＋ｎ３＋ｎ４＝４（但し、ｎ２は１〜４の整数であり、ｎ１、ｎ３及びｎ４は０〜３の整数である）であり、Ａ¹は、飽和環状３級アミン化合物残基、不飽和環状３級アミン化合物残基、ケチミン残基、ニトリル基、（チオ）イソシアナート基（イソシアナート基又はチオイソシアナート基を示す。以下、同様。）、（チオ）エポキシ基、イソシアヌル酸トリヒドロカルビルエステル基、炭酸ジヒドロカルビルエステル基、ニトリル基、ピリジン基、（チオ）ケトン基、（チオ）アルデヒド基、アミド基、（チオ）カルボン酸エステル基、（チオ）カルボン酸エステルの金属塩、カルボン酸無水物残基、カルボン酸ハロゲン化合物残基、並びに加水分解性基を有する第一もしくは第二アミノ基又はメルカプト基の中から選択される少なくとも１種の官能基であり、ｎ４が２以上の場合には同一でも異なっていてもよく、Ａ¹は、Ｓｉと結合して環状構造を形成する二価の基であってもよく、Ｒ²¹は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、ｎ１が２以上の場合には同一でも異なっていてもよく、Ｒ²³は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基、炭素数６〜１８の一価の芳香族炭化水素基又はハロゲン原子（フッ素、塩素、臭素、又は、ヨウ素）であり、ｎ３が２以上の場合には同一でも異なっていてもよく、Ｒ²²は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、いずれも窒素原子及び／又はケイ素原子を含有していてもよく、ｎ２が２以上の場合には、互いに同一もしくは異なっていてもよく、或いは、一緒になって環を形成しており、Ｒ²⁴は、炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、ｎ４が２以上の場合には同一でも異なっていてもよい。
上記加水分解性基を有する第一もしくは第二アミノ基又は上記加水分解性基を有するメルカプト基における加水分解性基として、トリメチルシリル基又はｔｅｒｔ−ブチルジメチルシリル基が好ましく、トリメチルシリル基が特に好ましい。
なお、本発明において、「炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基」とは、「炭素数１〜２０の一価の脂肪族炭化水素基もしくは炭素数３〜２０の一価の脂環式炭化水素基」をいう。二価の炭化水素基の場合も同様である。
上記一般式（ＩＩ）で表されるヒドロカルビルオキシシラン化合物の具体例としては、〔Ｎ，Ｎ−ビス（トリメチルシリル）−（３−アミノ−１−プロピル）〕（メチル）（ジエトキシ）シランが好適に挙げられる。

In the general formula (II), n1 + n2 + n3 + n4 = 4 (wherein n2 is an integer of 1 to 4 and n1, n3 and n4 are integers of 0 to 3), and A ¹ is a saturated cyclic tertiary amine compound Residue, unsaturated cyclic tertiary amine compound residue, ketimine residue, nitrile group, (thio) isocyanate group (isocyanate group or thioisocyanate group is shown. The same applies hereinafter), (thio) epoxy group, Isocyanuric acid trihydrocarbyl ester group, dihydrocarbyl carbonate ester group, nitrile group, pyridine group, (thio) ketone group, (thio) aldehyde group, amide group, (thio) carboxylic acid ester group, metal of (thio) carboxylic acid ester Salts, carboxylic acid anhydride residues, carboxylic acid halogen compound residues, and primary or secondary amino or mercapto groups having hydrolyzable groups At least one functional group selected from among may be the same or different in the case of n4 is 2 or more, A ¹ is a divalent group which forms a cyclic structure bonded to Si R ²¹ may be a monovalent aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and n 1 is 2 or more R ²³ may be the same or different, and R ²³ is a C 1-20 monovalent aliphatic or alicyclic hydrocarbon group, a C 6-18 monovalent aromatic hydrocarbon group or a halogen atom (Fluorine, chlorine, bromine or iodine), and when n 3 is 2 or more, they may be the same or different, and R ²² is a monovalent aliphatic or alicyclic carbon having 1 to 20 carbon atoms A hydrogen group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, each of which is a nitrogen atom and / or May contain Lee atom, in the case of n2 is 2 or more, may be the same or different from each other, or forms a ring together, R ²⁴ is 1 to carbon atoms 20 divalent aliphatic or alicyclic hydrocarbon groups or divalent aromatic hydrocarbon groups having 6 to 18 carbon atoms, and when n 4 is 2 or more, they may be the same or different.
As a hydrolysable group in the 1st or 2nd amino group which has the said hydrolysable group, or the mercapto group which has the said hydrolysable group, a trimethylsilyl group or a tert- butyl dimethyl silyl group is preferable, and a trimethylsilyl group is especially preferable.
In the present invention, “a monovalent aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms” means “a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or 3 to 20 carbon atoms”. "Monovalent alicyclic hydrocarbon group". The same applies to the case of divalent hydrocarbon groups.
[N, N-Bis (trimethylsilyl)-(3-amino-1-propyl)] (methyl) (diethoxy) silane is preferable as a specific example of the hydrocarbyloxysilane compound represented by the above general formula (II) It can be mentioned.

上記一般式（ＩＩＩ）中、ｐ１＋ｐ２＋ｐ３＝２（但し、ｐ２は１〜２の整数であり、ｐ１及びｐ３は０〜１の整数である）であり、Ａ²は、ＮＲａ（Ｒａは、一価の炭化水素基、加水分解性基又は含窒素有機基である。加水分解性基として、トリメチルシリル基又はｔｅｒｔ−ブチルジメチルシリル基が好ましく、トリメチルシリル基が特に好ましい。）、或いは、硫黄であり、Ｒ²⁵は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、Ｒ²⁷は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基、炭素数６〜１８の一価の芳香族炭化水素基又はハロゲン原子（フッ素、塩素、臭素、又は、ヨウ素）であり、Ｒ²⁶は、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基、炭素数６〜１８の一価の芳香族炭化水素基又は含窒素有機基であり、いずれも窒素原子及び／又はケイ素原子を含有していてもよく、ｐ２が２の場合には、互いに同一もしくは異なり、或いは、一緒になって環を形成しており、Ｒ²⁸は、炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基である。 Furthermore, the hydrocarbyloxysilane compound represented by the above general formula (II) is more preferably a hydrocarbyloxysilane compound represented by the following general formula (III).

In the above general formula (III), p1 + p2 + p3 = 2 (wherein p2 is an integer of 1 to 2, p1 and p3 are integers of 0 to 1), and A ² is NRa (Ra is a monovalent) As a hydrolyzable group, a trimethylsilyl group or a tert-butyldimethylsilyl group is preferable, and a trimethylsilyl group is particularly preferable as the hydrolyzable group, or sulfur, and R ²⁵ is a C 1-20 monovalent aliphatic or alicyclic hydrocarbon group or a C 6-18 monovalent aromatic hydrocarbon group, and R ²⁷ is a C 1-20 one. A monovalent aliphatic or alicyclic hydrocarbon group, a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, or a halogen atom (fluorine, chlorine, bromine or iodine), and R ²⁶ is a carbon number of 1 -20 monovalent aliphatic or alicyclic carbon Or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms or a nitrogen-containing organic group, each of which may contain a nitrogen atom and / or a silicon atom, and in the case where p2 is 2, R ²⁸ is the same or different from each other, or together to form a ring, and R ²⁸ is a C 1-20 divalent aliphatic or alicyclic hydrocarbon group or a C 6-18 divalent group It is an aromatic hydrocarbon group.

上記一般式（ＩＶ）中、ｑ１＋ｑ２＝３（但し、ｑ１は０〜２の整数であり、ｑ２は１〜３の整数である）であり、Ｒ³¹は炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、Ｒ³²及びＲ³³はそれぞれ独立して加水分解性基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、Ｒ³⁴は炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、ｑ１が２の場合には同一でも異なっていてもよく、Ｒ³⁵は炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、ｑ２が２以上の場合には同一でも異なっていてもよい。 Furthermore, the hydrocarbyl oxysilane compound represented by the above general formula (II) is more preferably a hydrocarbyl oxysilane compound represented by the following general formula (IV) or (V).

In the above general formula (IV), q1 + q2 = 3 (provided that q1 is an integer of 0 to 2 and q2 is an integer of 1 to 3), and R ³¹ is a C1-C20 divalent fat Group or alicyclic hydrocarbon group or a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and R ³² and R ³³ each independently represent a hydrolyzable group and a monovalent one having 1 to 20 carbon atoms. An aliphatic or alicyclic hydrocarbon group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and R ³⁴ is a monovalent aliphatic or alicyclic hydrocarbon group or 1 to 20 carbon atoms R 6 is a monovalent aromatic hydrocarbon group having a number of 6 to 18, which may be the same or different when q 1 is 2 and R ³⁵ is a monovalent or aliphatic carbon having 1 to 20 carbon atoms. A hydrogen group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and may be the same or different when q2 is 2 or more .

上記一般式（Ｖ）中、ｒ１＋ｒ２＝３（但し、ｒ１は１〜３の整数であり、ｒ２は０〜２の整数である）であり、Ｒ³⁶は炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、Ｒ³⁷はジメチルアミノメチル基、ジメチルアミノエチル基、ジエチルアミノメチル基、ジエチルアミノエチル基、メチルシリル（メチル）アミノメチル基、メチルシリル（メチル）アミノエチル基、メチルシリル（エチル）アミノメチル基、メチルシリル（エチル）アミノエチル基、ジメチルシリルアミノメチル基、ジメチルシリルアミノエチル基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、ｒ１が２以上の場合には同一でも異なっていてもよく、Ｒ³⁸は炭素数１〜２０のヒドロカルビルオキシ基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、ｒ２が２の場合には同一でも異なっていてもよい。

In the above general formula (V), r1 + r2 = 3 (wherein r1 is an integer of 1 to 3 and r2 is an integer of 0 to 2), and R ³⁶ is a C1-C20 divalent fat Group or alicyclic hydrocarbon group or a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and R ³⁷ is dimethylaminomethyl group, dimethylaminoethyl group, diethylaminomethyl group, diethylaminoethyl group, methylsilyl (methyl) ) Aminomethyl group, methylsilyl (methyl) aminoethyl group, methylsilyl (ethyl) aminomethyl group, methylsilyl (ethyl) aminoethyl group, dimethylsilylaminomethyl group, dimethylsilylaminoethyl group, and having 1 to 20 carbon atoms An aliphatic or alicyclic hydrocarbon group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and in the case where r1 is 2 or more, they are the same or different; At best, R ³⁸ is a hydrocarbyloxy group, a monovalent C1-20 aliphatic or cycloaliphatic hydrocarbon group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms having 1 to 20 carbon atoms If r2 is 2, they may be the same or different.

上記一般式（ＶＩ）中、ＴＭＳはトリメチルシリル基であり、Ｒ⁴⁰はトリメチルシリル基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、Ｒ⁴¹は炭素数１〜２０のヒドロカルビルオキシ基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、Ｒ⁴²は炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基である。 Moreover, it is preferable that the said modifier is the hydrocarbyloxysilane compound which has two or more nitrogen atoms represented by the following general formula (VI) or (VII).

In the above general formula (VI), TMS is a trimethylsilyl group, R ⁴⁰ is a trimethylsilyl group, a C 1-20 monovalent aliphatic or alicyclic hydrocarbon group or a C 6-18 monovalent aromatic Hydrocarbon group, R ⁴¹ is a hydrocarbyloxy group having 1 to 20 carbon atoms, a monovalent aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms, or a monovalent aromatic ring having 6 to 18 carbon atoms R ⁴² is a hydrocarbon group, and R ⁴² is a C 1-20 divalent aliphatic or alicyclic hydrocarbon group or a C 6-18 divalent aromatic hydrocarbon group.

上記一般式（ＶＩＩ）中、ＴＭＳはトリメチルシリル基であり、Ｒ⁴³及びＲ⁴⁴はそれぞれ独立して炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、Ｒ⁴⁵は炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基であり、複数のＲ⁴⁵は、同一でも異なっていてもよい。

In the above general formula (VII), TMS is a trimethylsilyl group, and R ⁴³ and R ⁴⁴ each independently have a carbon number of 1 to 20, and a divalent aliphatic or alicyclic hydrocarbon group or a carbon number of 6 to 18 And R ⁴⁵ is a monovalent aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and R ⁴⁵ is a divalent aromatic hydrocarbon group; Plural R ⁴⁵ may be the same or different.

上記一般式（ＶＩＩＩ）中、ｒ１＋ｒ２＝３（但し、ｒ１は０〜２の整数であり、ｒ２は１〜３の整数である）であり、ＴＭＳはトリメチルシリル基であり、Ｒ⁴⁶は炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、Ｒ⁴⁷及びＲ⁴⁸はそれぞれ独立して炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基である。複数のＲ⁴⁷又はＲ⁴⁸は、同一でも異なっていてもよい。 Further, the hydrocarbyloxysilane compound represented by the above general formula (II) is more preferably a hydrocarbyloxysilane compound represented by the following general formula (VIII).

In the above general formula (VIII), r1 + r2 = 3 (wherein r1 is an integer of 0 to 2 and r2 is an integer of 1 to 3), TMS is a trimethylsilyl group, and R ⁴⁶ has 1 carbon atom To 20 divalent aliphatic or alicyclic hydrocarbon groups or divalent aromatic hydrocarbon groups having 6 to 18 carbon atoms, each of R ⁴⁷ and R ⁴⁸ independently having 1 to 20 carbon atoms A monovalent aliphatic or alicyclic hydrocarbon group or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms. Plural R ⁴⁷ or R ⁴⁸ may be the same or different.

上記一般式（ＩＸ）中、Ｘはハロゲン原子（フッ素、塩素、臭素、又は、ヨウ素）であり、Ｒ⁴⁹は炭素数１〜２０の二価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の二価の芳香族炭化水素基であり、Ｒ⁵⁰及びＲ⁵¹はそれぞれ独立して加水分解性基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基、又は、炭素数６〜１８の一価の芳香族炭化水素基であるか、或いは、Ｒ⁵⁰及びＲ⁵¹は結合して二価の有機基を形成しており、Ｒ⁵²及びＲ⁵³はそれぞれ独立してハロゲン原子（フッ素、塩素、臭素、又は、ヨウ素）、ヒドロカルビルオキシ基、炭素数１〜２０の一価の脂肪族もしくは脂環式炭化水素基又は炭素数６〜１８の一価の芳香族炭化水素基である。Ｒ⁵⁰及びＲ⁵¹としては、加水分解性基であることが好ましく、加水分解性基として、トリメチルシリル基又はｔｅｒｔ−ブチルジメチルシリル基が好ましく、トリメチルシリル基が特に好ましい。 Furthermore, the modifier is preferably a hydrocarbyloxysilane compound represented by the following general formula (IX).

In the above general formula (IX), X is a halogen atom (fluorine, chlorine, bromine or iodine), and R ⁴⁹ is a C 1-20 divalent aliphatic or alicyclic hydrocarbon group or carbon number And R ⁵⁰ and R ⁵¹ each independently represent a hydrolysable group, a monovalent aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms, or Or a monovalent aromatic hydrocarbon group having 6 to 18 carbon atoms, or R ⁵⁰ and R ⁵¹ combine to form a divalent organic group, and R ⁵² and R ⁵³ are each independently A halogen atom (fluorine, chlorine, bromine or iodine), a hydrocarbyloxy group, a C 1-20 monovalent aliphatic or alicyclic hydrocarbon group or a C 6-18 monovalent aromatic carbonization It is a hydrogen group. As R ⁵⁰ and R ⁵¹ , a hydrolyzable group is preferable, and as the hydrolyzable group, a trimethylsilyl group or a tert-butyldimethylsilyl group is preferable, and a trimethylsilyl group is particularly preferable.

ここで、式Ｘ〜ＸIIIに含まれる記号Ｕ、Ｖはそれぞれ０〜２かつ、Ｕ＋Ｖ＝２を満たす整数である。また、式Ｘ〜ＸIII中のＲ⁵⁴〜⁹²は同一でも異なっていても良く、炭素数１から２０の２価の脂肪族若しくは、脂環式炭化水素または、炭素数６〜１８の２価の芳香族炭化水素基である。また、式ＸIII中のα、βは０〜５の整数である。
また、式Ｘ〜ＸIIを満たす化合物の中でも、特に、Ｎ１，Ｎ１，Ｎ７−テトラメチル−４−（（トリメトキシシリル）メチル）−１，７へプタン、２−（（ヘキシル−ジメトキシシリル）メチル）−Ｎ１，Ｎ１，Ｎ３，Ｎ３−２−ペンタメチルプロパン−１，３−ジアミン、Ｎ１−（３−（ジメチルアミノ）プロピル−Ｎ３，Ｎ３−ジメチル−Ｎ１−（３−（トリメトキシシリル）プロピル）プロパン−１，３−ジアミン、４−（３−（ジメチルアミノ）プロピル）−Ｎ１，Ｎ１，Ｎ７，Ｎ７−テトラメチル−４−（（トリメトキシシリル）メチル）へプタン−１，７−ジアミン、が好ましく、
式ＸIIIを満たす化合物の中でも、特に、Ｎ，Ｎ−ジメチル−２−（３−（ジメトキシメチルシリル）プロポキシ）エタンアミン、Ｎ，Ｎ−ビス（トリメチルシリル）−２−（３−（トリメトキシシリル）プロポキシ）エタンアミン、Ｎ，Ｎ−ジメチル−２−（３−（トリメトキシシリル）プロポキシ）エタンアミン、Ｎ，Ｎ−ジメチル−３−（３−（トリメトキシシリル）プロポキシ）プロパン−１−アミンが好ましい。 Moreover, it is preferable that the said modifier is a compound which has a structure represented by the following general formula (X)-(XIII).

Here, symbols U and V included in formulas X to XIII are integers satisfying 0 to 2 and U + V = 2, respectively. R ⁵⁴ to ⁹² in the formulas X to XIII may be the same or different and each of them is a divalent aliphatic or alicyclic hydrocarbon having 1 to 20 carbon atoms or a divalent divalent hydrocarbon having 6 to 18 carbon atoms. It is an aromatic hydrocarbon group. In the formula XIII, α and β are integers of 0 to 5.
Further, among the compounds satisfying the formulas X to XII, in particular, N1, N1, N7-tetramethyl-4-((trimethoxysilyl) methyl) -1,7-heptan, 2-((hexyl-dimethoxysilyl) methyl )-N 1, N 1, N 3, N 3-2-pentamethylpropane-1, 3-diamine, N 1-(3-(dimethylamino) propyl-N 3, N 3-dimethyl-N 1-(3-(trimethoxysilyl) propyl) ) Propane-1,3-diamine, 4- (3- (dimethylamino) propyl) -N1, N1, N7, N7-Tetramethyl-4-((trimethoxysilyl) methyl) heptane-1,7-diamine Is preferred,
Among the compounds satisfying the formula XIII, in particular, N, N-dimethyl-2- (3- (dimethoxymethylsilyl) propoxy) ethanamine, N, N-bis (trimethylsilyl) -2- (3- (trimethoxysilyl) propoxy Ethanamine, N, N-dimethyl-2- (3- (trimethoxysilyl) propoxy) ethanamine, N, N-dimethyl-3- (3- (trimethoxysilyl) propoxy) propan-1-amine is preferred.

  The hydrocarbyloxysilane compounds represented by the general formulas (II) to (XIII) are preferably alkoxysilane compounds.

  Specific examples of the modifying agent suitable for obtaining a modified polymer by anionic polymerization include 3,4-bis (trimethylsilyloxy) -1-vinylbenzene, 3,4-bis (trimethylsilyloxy) benzaldehyde, At least one compound selected from 4-bis (tert-butyldimethylsilyloxy) benzaldehyde, 2-cyanopyridine, 1,3-dimethyl-2-imidazolidinone and 1-methyl-2-pyrrolidone is mentioned.

Furthermore, the modifier is preferably an amide moiety of a lithium amide compound used as a polymerization initiator in anionic polymerization.
As this lithium amide compound, lithium hexamethylene imide, lithium pyrrolidine, lithium piperidide, lithium heptamethylene imide, lithium dodecamethylene imide, lithium dimethylamide, lithium diethylamide, lithium dibutylamide, lithium dipropylamide, lithium diheptylamide Selected from lithium dihexylamide, lithium dioctylamide, lithium di-2-ethylhexylamide, lithium didecylamide, lithium-N-methylpiperazid, lithium ethyl propylamide, lithium ethyl butyramide, lithium ethyl benzylamide and lithium methyl phenethyl amide It is preferably exemplified that it is at least one compound. For example, the modifier to be the amide moiety of lithium hexamethylene imide is hexamethylene imine, the modifier to be the amide moiety of lithium pyrrolidine is pyrrolidine, and the modifier to be the amide moiety of lithium piperidide is piperidine.

  As a suitable modifier when obtaining a modification | denaturation polymer by coordination polymerization, at least 1 sort (s) of compound chosen from 2-cyanopyridine and 3,4- ditrimethylsilyl oxy benzaldehyde is mentioned preferably.

  When a modified polymer is obtained by emulsion polymerization, preferred examples of the modifier include at least one compound selected from 3,4-ditrimethylsilyloxy benzaldehyde and 4-hexamethyleneiminoalkylstyrene. The modifier preferably used in the emulsion polymerization is preferably copolymerized at the time of the emulsion polymerization as a monomer containing a nitrogen atom and / or a silicon atom.

  The Tg of the rubber component A may be such that the temperature of the peak A of tan δ of the polymer phase A mentioned above is higher than the temperature of the peak B, and the temperature difference between the peak A and the peak B is 45 ° C. or more It is not limited. For example, the Tg of the rubber component A is -35 ° C or more.

  In the rubber composition for a tire according to the present invention, the difference between the Tg of the rubber component A and the Tg of the rubber component B described later is 30 ° C. or more, and the Tg of the rubber component A is more than the Tg of the rubber component B High is preferred. This further improves the low rolling resistance and the wet performance. In one embodiment, the difference between the Tg of the rubber component A and the Tg of the rubber component B is, for example, 30 to 45 ° C. or 30 to 35 ° C.

  The proportion of the rubber component A in the rubber component is not particularly limited, and may be appropriately adjusted. For example, the proportion of the rubber component A may be 10 to 90 parts by mass or 10 to 50 parts by mass with respect to 100 parts by mass of the rubber component.

<< Rubber component B >>
The rubber component B is not particularly limited as long as it can form a polymer phase B different from the polymer phase A of the rubber component A, and a known rubber component can be appropriately selected and used.

  Examples of the rubber component B include natural rubber, synthetic isoprene rubber, butadiene rubber, and modified products thereof.

  The Tg of the rubber component B may be such that the temperature of the peak A of tan δ of the polymer phase A mentioned above is higher than the temperature of the peak B and the temperature difference between the peak A and the peak B is 45 ° C. or more It is not limited.

  In the rubber composition for a tire according to the present invention, the Tg of the rubber component B is preferably -50 ° C or less. This further improves the low rolling resistance and the wet performance. In one embodiment, Tg of rubber component B is -110 ° C or more, -80 ° C or more, -70 ° C or more, or -65 ° C or more.

  The proportion of the rubber component B in the rubber component is not particularly limited, and may be appropriately adjusted. For example, the proportion of the rubber component B may be 10 to 90 parts by mass with respect to 100 parts by mass of the rubber component.

  In the rubber composition for a tire according to the present invention, the compounding amount of the rubber component B is preferably equal to or more than the compounding amount of the rubber component A, and the compounding ratio of the rubber component B to the rubber component A is 50:50. It is more preferable that it is 60:40. This further improves the low rolling resistance and the wet performance.

<< Other rubber components >>
The rubber composition for a tire according to the present invention may contain at least the rubber component A and the rubber component B, and may contain other rubber components. Other rubber components include, for example, butadiene rubber, synthetic isoprene rubber, styrene isoprene rubber, acrylonitrile butadiene rubber, chloroprene rubber and the like. The other rubber components may be used alone or in combination of two or more.

<Filler>
The rubber composition for a tire according to the present invention contains a filler. The filler is one or more selected from the group consisting of carbon black and silica. A well-known filler can be selected suitably and can be used for a filler. The fillers may be used alone or in combination of two or more.

  It does not specifically limit as a compounding quantity of a filler, It can adjust suitably. The compounding amount of the filler is, for example, 30 to 100 parts by mass, preferably 40 to 60 parts by mass with respect to 100 parts by mass of the rubber component.

<< Silica >>
The silica is not particularly limited, and known silicas can be appropriately selected and used. Examples of the silica include wet silica (hydrous silicic acid), dry silica (anhydrous silicic acid), calcium silicate, aluminum silicate and the like.

  The amount of silica in the filler may be adjusted appropriately. For example, the amount of silica is 70% by mass or more, 80% by mass or more, or 90% by mass or more, 95% by mass or less, 90% by mass or less, 85% by mass or less, 80% by mass Below, it is 70 mass% or less, 50 mass% or less, or 40 mass% or less.

<< Carbon Black >>
The carbon black is not particularly limited, and known carbon black can be appropriately selected and used. For example, GPF, FEF, HAF, ISAF, carbon black of SAF grade, etc. are mentioned. One type of carbon black may be used alone, or two or more types may be used in combination.

  The amount of carbon black in the filler may be adjusted appropriately. For example, the amount of carbon black may be 5 to 90% by mass based on the total mass of the filler.

  The rubber composition for a tire according to the present invention is preferably produced using a masterbatch obtained by kneading the rubber component A and the filler, and in this case, the compounding amount of the filler is the same as that described above. It is preferable that it is 85% or more of the total compounding quantity of the filler mix | blended with the rubber composition for tires, It is more preferable that it is 90% or more, It is more preferable that it is 100%. This further improves the low rolling resistance and the wet performance. The masterbatch is a masterbatch obtained by kneading together, in addition to the rubber component A and the filler, at least one selected from the group consisting of thermoplastic resins, inorganic substances, and vulcanized rubber pulverized materials described later. It may be

<Silane coupling agent>
When silica is used as the filler, a silane coupling agent may be used. As a silane coupling agent, a well-known silane coupling agent can be selected suitably and can be used. For example, silane coupling agents described in WO 2015/079703, WO 2016/084370 and the like can be mentioned.

  As a silane coupling agent, for example, bis (3-triethoxysilylpropyl) tetrasulfide, bis (3-triethoxysilylpropyl) trisulfide, bis (3-triethoxysilylpropyl) disulfide, bis (2-triethoxysilyl) Ethyl) tetrasulfide, bis (3-trimethoxysilylpropyl) tetrasulfide, bis (2-trimethoxysilylethyl) tetrasulfide, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 2-mercaptoethyltrile Methoxysilane, 2-mercaptoethyltriethoxysilane, 3-trimethoxysilylpropyl-N, N-dimethylthiocarbamoyl tetrasulfide, 3-triethoxysilylpropyl-N, N-dimethylthiocarba , 4-triethoxysilylethyl-N, N-dimethylthiocarbamoyl tetrasulfide, 3-trimethoxysilylpropylbenzothiazolyl tetrasulfide, 3-triethoxysilylpropylbenzolyl tetrasulfide, 3-triethoxysilyl Propyl methacrylate monosulfide, 3-trimethoxysilylpropyl methacrylate monosulfide, bis (3-diethoxymethylsilylpropyl) tetrasulfide, 3-mercaptopropyldimethoxymethylsilane, dimethoxymethylsilylpropyl-N, N-dimethylthiocarbamoyl tetrasulfide And dimethoxymethylsilylpropylbenzothiazolyl tetrasulfide. Among them, bis (3- Li triethoxysilylpropyl) polysulfide and 3-trimethoxysilylpropyl benzothiazyl tetrasulfide are preferable. One of these silane coupling agents may be used alone, or two or more thereof may be used in combination.

  The content of the silane coupling agent may be adjusted appropriately. For example, it may be 2 to 20 parts by mass or 5 to 15 parts by mass with respect to 100 parts by mass of silica.

<Thermoplastic resin>
The rubber composition for a tire according to the present invention may contain a thermoplastic resin. A known thermoplastic resin can be appropriately selected and used as the thermoplastic resin. The thermoplastic resin may be used alone or in combination of two or more.

As the thermoplastic resin, for example, WO 2015/079703, WO _{C 5} resins such as described in No. _2016/084370, C 5 ~C ₉ resins, _{C 9} resins, terpene resins, terpene -Aromatic compound resins, rosin resins, dicyclopentadiene resins, alkylphenol resins and the like can be mentioned.

The "C ₅ resin" in the present invention refers to a C ₅ type synthetic petroleum resins, for example, AlCl ₃ and using Friedel-Crafts catalyst such as BF _3, the solid polymer obtained by polymerizing the C ₅ fraction Point to Specifically, copolymers containing isoprene, cyclopentadiene, 1,3-pentadiene and 1-pentene as main components, copolymers of 2-pentene and dicyclopentadiene, and 1,3-pentadiene as main components. Polymers are exemplified. Note that the use of the C ₅ resin as the thermoplastic resin, it is also possible to further improve the braking performance on ice and snow road surface.

The "C ₅ -C ₉ resins" in the present invention refers to a C ₅ -C ₉ based synthetic petroleum resins, for example, using a Friedel-Crafts catalyst such as AlCl ₃ or BF _3, C ₅ ~C ₁₁ fractions Refers to a solid polymer obtained by polymerizing As the "C ₅ -C ₉ resins", such as styrene, vinyl toluene, alpha-methyl styrene, copolymers and the like composed mainly of indene. In the present invention, as the C ₅ -C ₉ resins, less resin of C ₉ or more components is preferable from the viewpoint of compatibility with the rubber component. Here, "the amount of the C ₉ or more component is small" means that the C ₉ or more component in the total amount of the resin is less than 50% by mass, preferably 40% by mass or less. Note that the use of the C ₅ -C ₉ resins as the thermoplastic resin, it is also possible to further improve the handling properties. Here, C _{5 to} C ₁₁ fractions used for the polymerization of the solid polymer as “C _{5 to} C ₉ resin” include fractions other than C ₅ fraction and C ₉ fraction. Do.

The "C ₉ resin" in the present invention refers to C ₉ based synthetic petroleum resins, for example, using a Friedel-Crafts catalyst such as AlCl ₃ or BF _3, the solid polymer obtained by polymerizing a C ₉ fraction Point to Examples of the “C ₉ -based resin” include copolymers having, as a main component, indene, α-methylstyrene, vinyl toluene and the like. The handling performance can be further improved by using a C ₉ -based resin as the thermoplastic resin.

  The terpene resin is a solid resin obtained by combining turpentine oil obtained at the same time as obtaining rosin from pine tree trees, or a polymerization component separated therefrom, and polymerizing using a Friedel-Crafts type catalyst. , Β-pinene resin, α-pinene resin, and the like. Moreover, as a terpene-aromatic compound type-resin, a terpene-phenol resin can be mentioned as a representative example. The terpene-phenol resin can be obtained by a reaction of terpenes with various phenols using a Friedel-Crafts type catalyst, or by condensation with formalin. There is no restriction | limiting in particular as terpenes of a raw material, Monoterpene hydrocarbons, such as alpha-pinene and limonene, are preferable, what contains alpha-pinene is more preferable, and it is especially preferable that it is alpha-pinene. In the present invention, terpene-phenol resins having a low proportion of phenol components are suitable. Here, "the proportion of the phenol component is small" indicates that the phenol component in the total amount of resin is less than 50% by mass, preferably 40% by mass or less. The handling performance can be further improved by using a terpene-aromatic compound resin, in particular a terpene-phenol resin, as the thermoplastic resin.

  Examples of the rosin-based resin include gum rosin, tall oil rosin and wood rosin contained in raw pine jani and tall oil as natural resin rosin, and modified rosin, rosin derivative and modified rosin derivative such as polymerized rosin and the like Partially hydrogenated rosin; glycerin ester rosin, partially hydrogenated rosin or fully hydrogenated rosin; pentaerythritol ester rosin, partially hydrogenated rosin or polymerized rosin; The handling performance can be further improved by using a rosin resin as the thermoplastic resin.

The dicyclopentadiene resin refers to, for example, a resin obtained by polymerizing dicyclopentadiene using a Friedel-Crafts-type catalyst such as AlCl ₃ or BF ₃ or the like. As a specific example of the commercial item of the said dicyclopentadiene resin, Quinton 1920 (made by Nippon Zeon), Quinton 1105 (made by Nippon Zeon), Marcarets M-890A (made by Maruzen Petrochemical), etc. are mentioned. In addition, if dicyclopentadiene resin is used as a thermoplastic resin, the braking performance on a snowy and snowy road surface can also be improved.

  Examples of the alkylphenol-based resin include alkylphenol-acetylene resins such as p-tert-butylphenol-acetylene resin, and alkylphenol-formaldehyde resins having a low degree of polymerization. The handling performance can be further improved by using an alkylphenol-based resin as the thermoplastic resin.

  In the case of a rubber composition for a tire manufactured using a master batch obtained by kneading a rubber component A, a filler and a thermoplastic resin, the temperature of the peak A of the polymer phase A is adjusted using a thermoplastic resin can do. More specifically, by using a thermoplastic resin whose Tg is higher than that of the rubber component A, it is possible to adjust the temperature of the peak A to the high temperature side. By adjusting the temperature of peak A to the high temperature side, the WET performance is further enhanced. For example, the temperature of peak A when using 10 parts by mass of a thermoplastic resin having a Tg of 100 ° C. is compared with the temperature of peak A using 10 parts by mass of a thermoplastic resin having a Tg of 145 ° C. The temperature of the latter peak A is higher than the temperature of the former peak A (when the other conditions are the same). In addition, when a thermoplastic resin having a Tg higher than that of the rubber component A is used, for example, the temperature of Peak A when using 10 parts by mass of a thermoplastic resin having a Tg of 145 ° C., and a Tg of 145 The temperature of the latter peak A is higher than the temperature of the former peak A in comparison with the temperature of the peak A in the case of using 20 parts by mass of the thermoplastic resin which is ° C (when the other conditions are the same).

  Thus, from the viewpoint of adjusting the temperature of the peak A to the high temperature side, in the case of a rubber composition for a tire manufactured using a master batch obtained by kneading the rubber component A, the filler and the thermoplastic resin, The Tg of the thermoplastic resin is preferably higher than the Tg of the rubber component A, more preferably 100 ° C. or more, and still more preferably 145 ° C. or more. Moreover, it is preferable that Tg of a thermoplastic resin is 160 degrees C or less from a viewpoint of the highest achieving temperature in the case of this masterbatch kneading.

  Also, from the viewpoint of adjusting the temperature of peak A to the high temperature side while maintaining low rolling resistance, a tire manufactured using a master batch obtained by kneading rubber component A, filler and thermoplastic resin. In the case of the rubber composition for use, the blending amount of the thermoplastic resin is preferably 5 to 30 parts by mass, and more preferably 10 to 20 parts by mass with respect to 100 parts by mass of the rubber component.

<Inorganic substance>
The rubber composition for a tire according to the present invention may contain an inorganic substance. However, the filler is not included in this inorganic substance. By blending the inorganic substance into the tire rubber composition, the WET performance is further enhanced. As the inorganic substance, known inorganic substances can be appropriately selected and used. The inorganic substances may be used alone or in combination of two or more.

  As the inorganic substance, for example, alumina such as γ-alumina and α-alumina, boehmite, alumina monohydrate such as diaspore, aluminum hydroxide such as gibbsite and bayerite, aluminum carbonate, magnesium hydroxide, magnesium oxide, magnesium carbonate , Talc, attapulgite, titanium white, titanium black, calcium oxide, calcium hydroxide, magnesium aluminum oxide, clay, kaolin, pyrophyllite, bentonite, aluminum silicate, magnesium silicate, calcium silicate, calcium aluminum silicate, silica Magnesium calcium acid, calcium carbonate, zirconium oxide, zirconium hydroxide, zirconium carbonate, various zeolites and the like can be mentioned.

  The average particle size of the inorganic substance may be appropriately adjusted, and is, for example, 0.01 to 10 μm, 1 to 2 μm, or 1 to 1.5 μm.

  The compounding amount of the inorganic substance may be appropriately adjusted, and is, for example, 5 to 30 parts by mass with respect to 100 parts by mass of the rubber component.

<Crushed vulcanized rubber>
The rubber composition for a tire according to the present invention may contain a pulverized vulcanized rubber. By blending the ground vulcanized rubber with the rubber composition for a tire, the WET performance is further enhanced. As the vulcanized rubber ground product, a known vulcanized rubber ground product can be appropriately selected and used. The ground vulcanized rubber may be used alone or in combination of two or more.

  For example, the powdered rubber described in JP-A-2016-108421 can be used as the pulverized vulcanized rubber. The particle size of the pulverized vulcanized rubber is, for example, 10 to 200 μm.

  Although not necessarily waste, hereinafter, the material to be used as powdered rubber will be referred to as waste rubber.

  Although the particle size of the powder rubber changes depending on the degree of fine particle size reduction of the waste rubber, the surface area in contact with the unvulcanized rubber component which is the base increases as the particle size decreases, so the mutual It can strengthen the action. On the one hand, the increase in the interaction leads to the improvement of the physical properties such as the uniformity of the material and the mechanical strength. On the other hand, the deterioration of the scorch and the undesirable effect on the processability Also give. In the present invention, in particular, among powder rubbers, one having a relatively small particle diameter is used, and the opening is 106 μm and is conventionally called 140 mesh as defined in JIS Z8801-1. The powdery rubber particles having a particle size which can pass through the sieve is 90% by mass or more, and the powdery rubber particles having a smaller particle size than this are used. Hereinafter, the particle size is referred to by the number of meshes which can pass through, and the larger the mesh number, the smaller or the smaller the particle size.

  In the present invention, as described above, in particular, powder rubber having a relatively small particle size of 140 mesh or more is specifically targeted. The purpose of this is to use those in the particle size range that is not advanced, but as a general tendency, if the fine particle size is used, it is possible to start resistance to cracking and improve durability. An effect can be expected.

  Although the particle size is as described above, when a rubber-like elastic body is fine-grained, particularly flexible materials are generally used regardless of whether they are crushed, cut or polished. The softer, the more difficult grain refinement. Therefore, the condition for the particle size distribution is that the particle size which can pass through the sieve of 140 mesh or more occupies 90% by mass or more, on the other hand, the waste rubber to be the material and the powder obtained from the waste rubber It can be said that the hardness of rubber is also given a certain index. That is, there is a difference between the powder rubber derived from waste rubber, which can only be up to 40 mesh, and the powder rubber derived from waste rubber, which can be made up to 200 mesh. However, the above is only once finished as a product, and although it has been vulcanized and bridged once, it is a situation in the case of fine-graining from waste rubber which is a lump, and the recycling of waste rubber It is distinguished from the case of producing particles such as emulsion through polymerization and modification of latex from raw materials.

  On the other hand, powder rubber can be considered as a kind of reinforcing filler, considering from the viewpoint of the components to be blended in a normal rubber composition. However, in this case, the powder rubber itself is a class having a large particle size as a filler because it is a finer one such as carbon black or silica than the micrometer order. However, since the rubber composition was originally vulcanized and crosslinked, it contains a filler in a general sense such as carbon black and silica inside, and the filler is a base material. The material has a unit structure of being coated with a vulcanized and crosslinked polymer, which is prepared to be easy to interact with the new polymer, in other words, the interface with the uncrosslinked polymer. It can be said that the filler has high affinity.

  The compounding amount of the pulverized vulcanized rubber may be appropriately adjusted, and is, for example, 5 to 30 parts by mass with respect to 100 parts by mass of the rubber component.

  The rubber composition for a tire according to the present invention is obtained by kneading the rubber component A, the filler, and at least one selected from the group consisting of thermoplastic resins, inorganic substances and crushed vulcanized rubbers. The thermoplastic resin is preferably produced using a masterbatch, and the Tg of the thermoplastic resin is preferably higher than the Tg of the rubber component A. This further enhances the WET performance. In addition, the amount of one or more selected from the group consisting of thermoplastic resin, inorganic substance and ground vulcanized rubber compounded in the above masterbatch is, for example, 10 parts by mass or more or 100 parts by mass of the rubber component It is 10-20 mass parts.

<Oil>
The rubber composition for a tire according to the present invention may contain an oil. A well-known oil can be selected suitably and can be used. The oils may be used alone or in combination of two or more.

  In the case of a rubber composition for a tire obtained by kneading the rubber component B and an oil, the oil can be used to adjust the temperature of the peak B of the polymer phase B. More specifically, by using an oil whose Tg is lower than that of the rubber component B, it is possible to adjust the temperature of the peak B to the low temperature side. By adjusting the temperature of peak B to the low temperature side, the WET performance is further enhanced.

  Thus, in the case of the rubber composition for a tire obtained by kneading the rubber component B and the oil from the viewpoint of adjusting the temperature of the peak B to the low temperature side, the Tg of the oil is more than that of the rubber component B Is also preferably low, more preferably -80.degree. C. or less, still more preferably -90.degree. C. or less, and preferably -120.degree. C. or more.

  Such low Tg oils include, for example, process oils such as naphthenic process oils and paraffinic process oils.

  The blending amount of oil may be adjusted appropriately, and is, for example, 1 to 20 parts by mass with respect to 100 parts by mass of the rubber component. Or it is 5-20 mass% with respect to the mass of rubber component B, for example.

<Softener>
The rubber composition for a tire according to the present invention may contain a softener. As the softener, known softeners can be appropriately selected and used. A softening agent may be used individually by 1 type, and may be used in combination of 2 or more type.

  Similar to the above oils, softeners can be used to control the temperature of peak B of polymer phase B. More specifically, by using a softener whose Tg is lower than that of the rubber component B, it is possible to adjust the temperature of the peak B to the low temperature side. By adjusting the temperature of peak B to the low temperature side, the WET performance is further enhanced.

  The rubber composition for a tire according to the present invention is obtained by kneading the rubber component A, the filler, and at least one selected from the group consisting of thermoplastic resins, inorganic substances and crushed vulcanized rubbers. It is obtained by kneading a masterbatch, the rubber component B, and one or more selected from the group consisting of an oil and a softener, and the Tg of the oil and the softener is higher than the Tg of the rubber component B Low is preferred. This further improves the low rolling resistance and the wet performance. In this case, the Tg of the softening agent is more preferably -80 ° C or less, still more preferably -90 ° C or less, and preferably -120 ° C or more.

  Examples of such softeners with a low Tg include octyl oleate, dibutyl phthalate, di- (2-ethylhexyl) phthalate, butyl benzyl phthalate, di-n-octyl phthalate and the like.

  The blending amount of the softener may be appropriately adjusted, and is, for example, 1 to 20 parts by mass with respect to 100 parts by mass of the rubber component. Or it is 5-20 mass% with respect to the mass of rubber component B, for example.

<Other ingredients>
In the rubber composition for a tire according to the present invention, other than the above components, known additives to be blended in the rubber composition for a tire may be appropriately blended. As such additives, for example, a vulcanizing agent, a vulcanization accelerator, an antiaging agent, a reinforcing agent, a vulcanizing aid, a coloring agent, a flame retardant, a lubricant, a foaming agent, a processing aid, an antioxidant, The scorch inhibitor, the ultraviolet light inhibitor, the antistatic agent, the coloring agent, etc. may be mentioned. Each of these may be used alone or in combination of two or more.

  The preparation method of the rubber composition for tires is not specifically limited, A well-known method can be selected suitably and can be used. For example, it can be prepared by mixing and kneading a filler, a thermoplastic resin, other components and the like with a rubber component using a Banbury mixer, a roll, etc., followed by heating and extrusion.

  As a suitable method for preparing a rubber composition for a tire, for example, as a first stage of kneading, a step of kneading rubber component A and a filler to prepare a master batch, and a second stage of kneading, The process of kneading the master batch and the rubber component B, and the process of adding a vulcanizing agent such as sulfur to the mixture obtained from the second stage of kneading and kneading as the final stage of kneading Methods, that is, methods using masterbatches.

  In the method using the above masterbatch, the compounding amount of the filler to be compounded in the first stage of kneading may be appropriately adjusted, and the compounding amount of the filler is such that 85% or more of the total compounding amount of the filler is present in the polymer phase A Therefore, it is preferable that it is 85% or more of the total compounding quantity of the filler mix | blended with the rubber composition for tires, It is more preferable that it is 90% or more, It is more preferable that it is 100%.

  In the method of using the above-mentioned master batch, in the first stage of kneading, in addition to the rubber component A and the filler, other components may be kneaded. In the first stage of the kneading, a master batch is prepared by kneading the rubber component A, the filler, and one or more selected from the group consisting of thermoplastic resin, inorganic substance and vulcanized rubber ground product. Preferably, the Tg of the thermoplastic resin is higher than the Tg of the rubber component A here.

  In the first stage of the above-mentioned kneading, the blending amounts of the thermoplastic resin, the inorganic substance and the ground material of the vulcanized rubber to be kneaded, and the Tg of the thermoplastic resin are as described above.

  In the method of using the master batch, in the second stage of the kneading, the master batch obtained in the first stage of the kneading and the rubber component B may be kneaded with other components. In the second stage of the kneading, it is preferable to knead the master batch obtained in the first stage of the kneading, the rubber component B, and one or more selected from the group consisting of an oil and a softener, The Tg of the oil and softener is lower than that of the rubber component B.

  Alternatively, in the method of preparing the rubber composition for a tire, for example, the step of kneading the rubber component A and the filler to produce the masterbatch A, the rubber component B, and an oil and a softener are selected. And mixing the masterbatch A with the masterbatch B, wherein the Tg of the oil and the softener is lower than the Tg of the rubber component B, and mixing the masterbatch A with the masterbatch B. As a method including a step of kneading, and a step of adding a vulcanizing agent such as sulfur to the master batch obtained from the kneading of the master batch A and the master batch B as a final stage of kneading and kneading. It is also good.

  In the step of producing the master batch A, as described above as the first stage of kneading, the blending amount of the filler is from the viewpoint of making the polymer phase A 85% or more of the total blending amount of the filler, the tire rubber composition It is preferable that it is 85% or more of the total compounding quantity of the filler mix | blended with things, It is more preferable that it is 90% or more, It is more preferable that it is 100%.

  Further, in the step of producing the master batch A, as described above as the first stage of the kneading, it is selected from the group consisting of the rubber component A, the filler, the thermoplastic resin, the inorganic substance and the vulcanized rubber pulverized product It is preferable to knead | mix a seed or more and prepare the masterbatch A, and Tg of a thermoplastic resin is higher than Tg of the rubber component A here.

(tire)
The tire according to the present invention is a tire using any one of the above rubber compositions for a tire. Thereby, low rolling resistance and wet performance can be highly compatible. Although it does not specifically limit as an application site | part in the tire of the rubber composition for tires which concerns on this invention, For example, a tread, a base tread, a side wall, a side reinforcement rubber, a bead filler etc. are mentioned. In particular, a tread is preferred.

  The method for obtaining a tire using the rubber composition for a tire according to the present invention is not particularly limited, and known methods can be used. The conditions for crosslinking or vulcanizing the rubber composition for a tire may be appropriately adjusted, and for example, the temperature may be 120 to 200 ° C., and the heating time may be 1 minute to 900 minutes.

  EXAMPLES Hereinafter, the present invention will be described in more detail by way of examples. However, these examples are for the purpose of illustration of the present invention and do not limit the present invention at all.

The details of the materials used in the examples are as follows.
(Rubber component)
Natural rubber (NR): Tg = -65 ° C
Native SBR: Tg = -30 ° C
Modified SBR: Tg = -30 ° C
(Filler)
Carbon black: ISAF
Silica: trade name Nipsil® AQ manufactured by Tosoh Silica Corporation
(oil)
Oil 1: "A / O MIX", manufactured by JXTG Energy, Tg = -40 ° C
Oil 2: "Super oil Y22", manufactured by JXTG Energy, Tg = -80 ° C
(Softener)
Softener 1: Octyl oleate, Tg = -90 ° C
(Thermoplastic resin)
Thermoplastic resin 1: T-REZ RD104, manufactured by Tonen Chemical Co., Ltd., Tg = 100 ° C.
Thermoplastic resin 2: Nisseki Neopolymer 140, manufactured by JXTG Energy, Tg = 145 ° C.
(Vulcanized rubber ground product)
Powdered rubber: Lehigh Technologies Inc. Made, particle size 10 to 200 μm
(Inorganic substance)
Aluminum hydroxide: trade name Hijirite (registered trademark) manufactured by Showa Denko, particle size 1 to 1.3 μm
Calcium carbonate: Silver W, manufactured by Shiraishi Kogyo, particle size 1.5 μm
(Others)
Anti-aging agent: N-phenyl-N '-(1,3-dimethylbutyl) -p-phenylenediamine, trade name Nocrac 6C manufactured by Ouchi Shinko Chemical Co., Ltd.
Vulcanization accelerator 1: 1,3-Diphenyl guanidine, trade name Noccellar D manufactured by Ouchi Shinko Chemical Co., Ltd.
Vulcanization accelerator 2: bis (2-benzothiazolyl) persulfide, trade name Noccellar DM-P manufactured by Ouchi Shinko Chemical Co., Ltd.
Vulcanization accelerator 3: N- (tert-butyl) -2-benzothiazolesulfenamide, trade name SANSELLER NS-G manufactured by Sanshin Chemical Industry Co., Ltd.

The details of the apparatus used in the examples are as follows.
AFM: Product name MFP-3D manufactured by ASYLUM RESEARCH
Dynamic tensile visco-elasticity tester: Uejima Mfg. Spectrometer

Synthesis of Modified SBR Into an autoclave reactor with an inner volume of 5 liters and purged with nitrogen, 2,500 g of cyclohexane, 25 g of tetrahydrofuran, 100 g of styrene and 390 g of 1,3-butadiene were charged. After adjusting the temperature of the reactor contents to 10 ° C., 375 mg of n-butyllithium was added to initiate polymerization. The polymerization was carried out under adiabatic conditions and the maximum temperature reached 85.degree. When the polymerization conversion reaches 99%, 10 g of butadiene is added, and after 5 minutes of polymerization, 100 mg of silane tetrachloride is added and the reaction is carried out for 5 minutes, followed by N, N-bis (trimethylsilyl) amino 1,020 mg of propylmethyldiethoxysilane was added and reacted for 15 minutes. To the polymer solution after the reaction, 2,6-di-tert-butyl-p-cresol was added. Next, the solvent was removed by steam stripping, and the rubber was dried by a heat roll adjusted to 110 ° C. to obtain a modified SBR.

  The rubber compositions for tires of Examples and Comparative Examples were prepared according to the formulations and order shown in Table 1.

  With respect to the vulcanized rubber obtained by vulcanizing the obtained rubber composition for tires for 33 minutes at 145 ° C., the distribution ratio (%) of the filler of the polymer phase A as follows (the amount of the filler in the polymer phase A × 100 / total amount of fillers of polymer phases A and B) was determined. The results are shown in Table 1 together.

(Method of measuring distribution ratio of filler of polymer phase A)
The smooth surface of the sample cut by the microtome was imaged using an AFM in an arbitrary measurement range of 2 μm × 2 μm. The filler area contained in each of the polymer phases A and B is determined based on a ternary image obtained by converting the obtained image into a ternary image based on a histogram and converting it into a polymer phase and a filler portion. The distribution ratio of the filler of polymer phase A to the total amount of fillers was calculated. When a filler is present at the interface of the polymer phase, it is assumed that the filler is included on the side of the polymer phase in contact with more. In calculation, the filler in contact with the edge (edge) of the image was not counted, and the filler of 9 pixels or less was not counted as noise.

  For vulcanized rubber, using a dynamic tensile visco-elastic tester, at a frequency of 52 Hz, an initial strain of 2%, a dynamic strain of 1%, and a temperature increase rate of 3 ° C / min, the value of tanδ at -100 ° C to 70 ° C It was measured to obtain a tan δ curve. The temperature of peak A, the temperature of peak B, and the temperature difference between peak A and peak B determined from the tan δ curve are shown in Table 1 together.

  The vulcanized rubber was evaluated for the WET performance, DRY-H and low rolling resistance as follows. The results are shown in Table 1 together.

(WET performance)
With respect to the value of tan δ at 0 ° C. of the tan δ curve, the value of Comparative Example 1 is expressed as an index of 100. The larger the value, the better the WET performance.

(DRY-H)
With respect to the value of the storage elastic modulus E ′ at 30 ° C. of the tan δ curve, the value of Comparative Example 1 was expressed as an index of 100. The larger the value, the better the DRY-H.

(Low rolling resistance)
With respect to the reciprocal of the value of tan δ at 60 ° C. of the tan δ curve, the value of Comparative Example 1 is expressed as an index of 100. The larger the value, the better the low rolling resistance.

  As shown in Table 1, in the example, low rolling resistance and wet performance could be highly compatible.

  According to the present invention, it is possible to provide a rubber composition for a tire that is highly compatible with low rolling resistance and wet performance. Further, according to the present invention, it is possible to provide a tire in which low rolling resistance and wet performance are highly compatible.

Claims (12)

A rubber composition for a tire, comprising a rubber component and a filler,
The rubber component contains at least a rubber component A and a rubber component B,
The filler is one or more selected from the group consisting of carbon black and silica,
The rubber composition for a tire is composed of two or more polymer phases having different filler distribution rates,
The rubber component A constitutes a polymer phase A,
The rubber component B constitutes a polymer phase B,
85% or more of the total content of the filler is present in the polymer phase A,
In a tan δ curve of a vulcanized product of the rubber composition for a tire, a peak A of tan δ of the polymer phase A and a peak B of tan δ of the polymer phase B are present,
The temperature of peak A is higher than the temperature of peak B,
The rubber composition for tires whose temperature difference of peak A and peak B is 45 degreeC or more.   The tire rubber composition according to claim 1, wherein the temperature of the peak A is in the range of -30 to 30 ° C.   The rubber composition for a tire according to claim 1, wherein the rubber component A has a modifying group that interacts with the filler. Manufactured using a master batch obtained by kneading the rubber component A, the filler, and one or more selected from the group consisting of thermoplastic resin, inorganic substance and vulcanized rubber ground product;
The rubber composition for a tire according to any one of claims 1 to 3, wherein a glass transition temperature (Tg) of the thermoplastic resin is higher than a glass transition temperature (Tg) of the rubber component A. Obtained by kneading the masterbatch, the rubber component B, and one or more selected from the group consisting of an oil and a softener,
The rubber composition for a tire according to claim 4, wherein a glass transition temperature (Tg) of the oil and the softener is lower than a glass transition temperature (Tg) of the rubber component B.   The tire rubber composition according to any one of claims 1 to 5, wherein the temperature of the peak A is in the range of 0 ° C or more.   The difference between the glass transition temperature (Tg) of the rubber component A and the glass transition temperature (Tg) of the rubber component B is 30 ° C. or more, and the glass transition temperature (Tg) of the rubber component A is the rubber component B. The rubber composition for a tire according to any one of claims 1 to 6, which is higher than the glass transition temperature (Tg) of   The rubber composition for a tire according to any one of claims 1 to 7, wherein a glass transition temperature (Tg) of the rubber component B is -50 ° C or less.   The rubber composition for a tire according to any one of claims 1 to 8, wherein a blending amount of the rubber component B is equal to or more than a blending amount of the rubber component A.   The rubber composition for a tire according to any one of claims 1 to 9, wherein the rubber component A is a styrene butadiene rubber. Manufactured using a masterbatch obtained by kneading the rubber component A and the filler;
The tire rubber composition according to any one of claims 1 to 10, wherein a blending amount of the filler is 85% or more of a total blending amount of the filler to be blended in the tire rubber composition. A tire using the rubber composition for a tire according to any one of claims 1 to 11.