Sulfur-crosslinkable rubber mixture and vehicle tire
A technology of rubber mixture and cross-linked rubber, which is applied in the direction of special tires, vehicle parts, tire parts, etc., can solve the problems of rolling resistance, deterioration of winter characteristic wear characteristics, etc., and achieve improved wet grip characteristics, increased stiffness, and trade-off improvement Effect
Active Publication Date: 2019-04-02
CONTINENTAL REIFEN DEUTSCHLAND GMBH
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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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[0127] The present invention will be explained in detail by way of comparative examples and working examples.
[0128] Production of rubber blends:
[0129] Copolymerization of 1,3-butadiene with styrene (diene polymer A)
[0130] 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...
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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, 30 to 300 phr of at least one silicic acid, and 1 to 150 phr of at least one hydrocarbon resin having a softening point according to ASTM E 28 (ring and ball) of 10 to 180 DEG C.
Description
technical field [0001] The present invention relates to sulfur crosslinkable rubber mixtures comprising rubber blends, and to vehicle tires comprising such rubber mixtures. 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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IPC IPC(8): B60C1/00C08C19/25C08C19/44C08L9/06C08L15/00
CPCB60C1/00C08C19/25C08C19/44C08L9/06C08L15/00B60C1/0016B29B7/7495C08K3/04C08K3/36C08K5/548C08K5/01C08F2/06C08F236/06C08F2810/40C08K3/06C08K5/5419C08L2205/025C08L2205/03C08L2312/00
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