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Sulfur-crosslinkable rubber mixture and vehicle tire

A rubber compound, cross-linked rubber technology, applied in special tires, vehicle parts, tire parts, etc., can solve the problems of rolling resistance, deterioration of winter characteristics and wear characteristics, and achieve improved wet grip characteristics, improved tear characteristics, The effect of increasing stiffness

Active Publication Date: 2019-04-02
CONTINENTAL REIFEN DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, improvements in wet grip and dry braking still generally lead to deterioration in rolling resistance, winter characteristics, and wear characteristics

Method used

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  • Sulfur-crosslinkable rubber mixture and vehicle tire
  • Sulfur-crosslinkable rubber mixture and vehicle tire
  • Sulfur-crosslinkable rubber mixture and vehicle tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0107] Production of rubber blends:

[0108] Copolymerization of 1,3-butadiene with styrene (diene polymer A)

[0109] Copolymerization was carried out in a jacketed 40 L steel reactor which was purged with nitrogen prior to addition of organic solvent, monomer, polar ligand compound, initiator compound and other components. The following components were added in the specified order: cyclohexane solvent (18 560 g); butadiene monomer (1777 g), styrene monomer (448 g) and tetramethylethylenediamine (TMEDA, 1.0 g), and The mixture was heated to 40°C and then titrated with n-butyllithium to remove traces of water or other impurities. n-BuLi (14.08 mmol) was added to the polymerization reactor to initiate polymerization. The polymerization was carried out for 20 minutes, during which the polymerization temperature was not allowed to rise above 70°C. Butadiene (1202 g) and styrene (91 g) were then added as monomers within 55 minutes. Polymerization was carried out for another 2...

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PUM

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Abstract

The invention relates to a sulfur-crosslinkable rubber mixture, containing a rubber blend of at least one high-molecular-weight, solution-polymerized diene polymer A, and at least one low-molecular-weight, solution-polymerized polymer B, wherein at least one of the polymers A or B is functionalized at the chain end and / or along the polymer chain and / or in a coupling center with at least one groupselected from epoxy groups, hydroxy groups, carboxy groups, silane-sulfide groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups, and from alkoxysilyl groups containing amino groups, containing 30 to 300 phr of at least one silicic acid, and containing 1 to 20 phf of at least one substance according to formula I) as a silane coupling agent I) (R1R2R3)Si-S4-Si(R3R2R1),wherein R1, R2, and R3 in the structure can be the same or different and can be selected from linear or branched alkoxy, cycloalkoxy, alkyl, cycloalkyl, or aryl gruops having 1 to 20 carbon atoms.

Description

technical field [0001] The present invention relates to a sulfur crosslinkable rubber mixture comprising a rubber blend and a vehicle tire comprising such a rubber mixture. Background technique [0002] Since the running characteristics of tires, especially pneumatic vehicle tires, depend to a large extent on the rubber composition of the tread, particularly high demands are placed on the composition of the tread compound. The partial or complete replacement of carbon black fillers by silica in rubber compounds over the past few years has led to an overall increase in running properties to a higher level. However, in silica-containing tread compounds there still remains a known trade-off in tire properties that follows the opposite trend. For example, improvements in wet grip and dry braking still generally lead to deterioration in rolling resistance, winter characteristics, and wear characteristics. [0003] Various approaches have been taken to address the tradeoffs in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C08C19/25C08C19/44C08L9/06C08L15/00
CPCB60C1/00C08C19/25C08C19/44C08L15/00C08L2205/03B60C1/0016B29B7/7495C08L9/06C08K3/04C08K3/36C08K5/548C08L9/00B60C11/0008C08L2205/025C08L2205/035
Inventor 卡拉·雷克卡塔里娜·萨卡特林·文明-博姆坎普维多利亚·帕翁·谢拉诺贝特·米勒米夏埃尔·拉德克
Owner CONTINENTAL REIFEN DEUTSCHLAND GMBH