The present application relates to a modified rubber masterbatch and preparation method thereof, rubber composition prepared therewith and vulcanized rubber and preparation method thereof. The modified rubber component comprises uncrosslinked rubber and rubber particles having crosslinked structure dispersed therein, wherein the rubber particles having crosslinked structure are synthetic rubber particles and/or natural rubber particles, have an average particle size of 20-500 nm and a gel content of 60% by weight or higher, and wherein the uncrosslinked rubber is styrene-butadiene rubber. The weight ratio of the rubber particles having crosslinked structure to the uncrosslinked rubber is greater than 20:80 and less than or equal to 80:20. The rubber composition comprises a blend of modified rubber component and base rubber, in which the modified rubber masterbatch is present in an amount of 1 to 70 parts by weight, relative to per 100 parts by weight of the base rubber. The vulcanized rubber of the rubber composition has not only low rolling resistance and excellent wet skid resistance, but also excellent wear resistance, and thus can be used for producing high performance tread rubber.

Claims

26 · 1 independent · depth 5

26 granted claims

›1.independentA modified rubber masterbatch, consisting of an uncrosslinked rubber and rubber particles having radiation crosslinked structure dispersed therein, wh…+25

›2.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the rubber particles having radiation crosslinked structure are one or mor…d2

›3.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the rubber particles having radiation crosslinked structure are of homogen…d2

›4.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the weight ratio of the rubber particles having radiation crosslinked stru…d2

›5.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the modified rubber masterbatch is obtained by mixing the components compr…d2

›6.↳ 1A preparation process for the modified rubber masterbatch according to claim 1, comprising the following steps:n(1) subjecting a latex of synthetic ru…d2+4

›8.↳ 1A rubber composition, comprising a blend of the modified rubber masterbatch according to claim 1 and a base rubber, wherein the modified rubber master…d2+8

›9.↳ 8The rubber composition according to claim 8, characterized in that the base rubber is one or more selected from the group consisting of natural rubber…d3

›10.↳ 8A preparation process for the rubber composition according to claim 8, comprising a step of compounding the modified rubber masterbatch and the base r…d3+1

›12.↳ 8A vulcanized rubber produced from the rubber composition according to claim 8.d3

›23.↳ 8The rubber composition of claim 8, wherein the modified rubber masterbatch is present in an amount of 1 to 40 parts by weight relative to per 100 part…d3+1

›25.↳ 8The rubber composition of claim 8, characterized in that the base rubber is one or more selected from the group consisting of natural rubber, solution…d3+1

›13.↳ 1The modified rubber masterbatch according to claim 1, wherein the rubber particles having radiation crosslinked structure are synthetic rubber particl…d2+1

›15.↳ 1The modified rubber masterbatch according to claim 1, wherein the rubber particles having radiation crosslinked structure are synthetic rubber particl…d2

›16.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the rubber particles having radiation crosslinked structure are one or mor…d2

›17.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the rubber particles having radiation crosslinked structure are one or mor…d2

›18.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the rubber particles having radiation crosslinked structure nitrile butadi…d2

›19.↳ 1The modified rubber masterbatch according to claim 1, characterized in that the weight ratio of the rubber particles having radiation crosslinked stru…d2

Classifications

7 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B60C1/00

Section C — Chemistry; metallurgy

C08F20/44
C08L9/00
C08L9/06
C08L21/00
C08L7/00
C08L9/02

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Nathan M Nutter

art unit 1765 · TC 1700

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Type	Document	Date
related publication	US 20140296439 A1	2 Oct 2014

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