Rubber blend, sulfur-crosslinkable rubber mixture and vehicle tire
A technology of rubber blends and rubber mixtures, 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 rolling resistance indicators and improved wet grip characteristics. , the effect of improving physical properties
Active Publication Date: 2019-04-02
CONTINENTAL REIFEN DEUTSCHLAND GMBH
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- Abstract
- Description
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Problems solved by technology
However, there is still a known trade-off in tire properties following the opposite trend in silica-containing tread compounds
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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Embodiment Construction
[0108] The present invention will now be described in detail by way of comparative examples and working examples.
[0109] Production of the rubber blend of the present invention:
[0110] Copolymerization of 1,3-butadiene with styrene (diene polymer A)
[0111] 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 order indicated: 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 ris...
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Abstract
The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture containing the rubber blend, and to a vehicle tire containing such a rubber mixture. The rubber blend contains at least one high-molecular, solution-polymerized diene polymer A and at least one low-molecular, solution-polymerized polymer B, wherein at least one of the polymers A or B is functionalized on the chain end and / or along the polymer chain and / or in a coupling center having at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, silane-sulfide groups, amino groups, siloxane groups, organo-silicon groups, phthalocyanine groups, and alkoxysilyl groups containing amino groups.
Description
technical field [0001] The present invention relates to rubber blends, sulfur-crosslinkable rubber mixtures comprising the rubber blends, and vehicle tires comprising such rubber mixtures. Background technique [0002] Since the running characteristics of tires, especially vehicle pneumatic 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, there is still a known compromise of tire properties following the opposite trend in silica-containing tread compounds. 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 pursued in order to resolv...
Claims
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IPC IPC(8): C08C19/25C08C19/44C08L9/00C08L9/06B60C1/00
CPCB60C1/0016B60C1/00C08C19/25C08C19/44C08L9/00C08L9/06B29B7/7495C08L15/00C08K3/04C08K3/36C08K5/548C08K3/06C08L2205/025C08L2312/00
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