Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tire

A tire and sidewall technology, applied in special tires, tire parts, reinforcement layers of pneumatic tires, etc., can solve the problems of rim damage, curb damage, reducing rolling resistance and improving tensile strength, etc.

Inactive Publication Date: 2010-09-01
SUMITOMO RUBBER IND LTD
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a method to reduce the loss tangent tanδ of the sidewall rubber, it is possible to reduce the amount of filler added, increase the particle size of carbon black, and add modified butadiene rubber, but generally the tensile strength will decrease
In addition, as a method of reducing the loss tangent tanδ of the lap adhesive, it is also possible to reduce the amount of filler added, increase the particle size of carbon black, and add modified butadiene rubber, but the tensile strength will still decrease, so It will cause damage caused by curbs, damage when the rim is installed, and wear of the rim friction
[0005] That is, it is difficult to simultaneously achieve reduction in rolling resistance and increase in tensile strength, and there is no tire with low rolling resistance and excellent strength

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tire
  • Tire
  • Tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] The present invention will be described more specifically based on examples, but the present invention is not limited thereto.

[0096]Next, various medicines used in Examples and Comparative Examples will be collectively described.

[0097] Natural Rubber (NR): RSS#3

[0098] Modified butadiene rubber (modified BR): Nipol BR1250H (modified BR, lithium initiator: lithium, tin atom content: 250ppm, Mw / Mn: 1.5, vinyl bond amount manufactured by Nippon Zeon Co., Ltd. : 10 to 13% by weight)

[0099] Butadiene rubber (BR): BR150B manufactured by Ube Industries, Ltd.

[0100] Epoxidized natural rubber (ENR): ENR25 (epoxidation rate: 25% by mole) manufactured by Kunpu Langasuri

[0101] Emulsion polymerized styrene-butadiene rubber (E-SBR): SBR1502 manufactured by JSR Corporation

[0102] Solution-polymerized modified styrene-butadiene rubber (modified S-SBR): HPR340 manufactured by JSR Corporation (bonded styrene amount: 10% by weight, coupled with alkoxysilane, introduce...

manufacture example 1～5

[0119] Vulcanization accelerator TBZTD: TBZTD (tetrabenzylthiuram disulfide) manufactured by Frekisis Co., Ltd. Production Examples 1 to 5 (rubber compositions for sidewalls)

[0120] According to the formulation shown in Table 1, a Banbury mixer was used to add chemicals other than sulfur and a vulcanization accelerator, and knead at a maximum temperature of 165° C. for 5 minutes to obtain a kneaded product. Then, sulfur and a vulcanization accelerator were added to the obtained kneaded product, and kneaded for 3 minutes at a maximum temperature of 97° C. using two-axis open rolls to obtain an unvulcanized rubber composition. The obtained unvulcanized rubber composition was rolled into a sheet shape in a die, and press-vulcanized at 170° C. for 12 minutes to produce vulcanized rubber sheets of Production Examples 1 to 5 (SW1 to 5).

manufacture example 6～9

[0121] Production Examples 6 to 9 (Rubber Compositions for Covering Carcass Cords)

[0122] According to the formulation shown in Table 2, a Banbury mixer was used to add chemicals other than sulfur and vulcanization accelerators, and knead at a maximum temperature of 165° C. for 5 minutes to obtain a kneaded product. Then, sulfur and a vulcanization accelerator were added to the obtained kneaded product, and kneaded for 3 minutes at a maximum temperature of 97° C. using two-axis open rolls to obtain an unvulcanized rubber composition. The obtained unvulcanized rubber composition was rolled into a sheet shape in a die, and vulcanized under pressure at 170° C. for 12 minutes to produce vulcanized rubber sheets of Production Examples 6 to 9 (CA1 to 4).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
elastic modulusaaaaaaaaaa
elastic modulusaaaaaaaaaa
Login to View More

Abstract

The object is to improve both of low rolling resistance and strength of a tire. Disclosed is a tire comprising a side-wall, a case and an inner liner, wherein the side-wall comprises a rubber composition (A) for a side-wall which comprises 100 parts by weight of a specific rubber component (A1) and 20 to 45 parts by weight of a filler (A2), the case has a code coated with a rubber composition (B) for a case code which comprises 100 parts by weight of a specific rubber component (B1) and 20-45 parts by weight of a filler (B2), and the inner liner comprises a rubber composition (C) for an inner liner which comprises 100 parts by weight of a rubber component (C1) containing a butyl rubber at a content of 35-80 wt% and 15-45 parts by weight of a carbon black (C2) having a nitrogen-absorption specific surface area of 20-45 m2 / g.

Description

technical field [0001] The present invention relates to a tire having both reduced rolling resistance and increased tire strength. Background technique [0002] For a long time, studies have been made to reduce the rolling resistance of tires (improving rolling resistance performance) to achieve lower fuel consumption of automobiles. In recent years, there has been an increasing demand for lower fuel consumption in automobiles, and more excellent low heat generation properties have been demanded. For example, as a method of reducing tire rolling resistance, a method of reducing the loss tangent tan δ of the tread, sidewall, breaker rubber, clinch, etc. is sequentially performed according to the amount of rubber used. [0003] As an attempt to reduce the rolling resistance of tire components, for example, Japanese Patent Laid-Open No. 5-320421 describes that tin-modified polybutadiene rubber is used as the rubber component in the rubber composition for sidewalls, and Japanes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00B60C5/14B60C9/04B60C13/00C08K3/00C08L7/00C08L9/00
CPCC08L7/00C08L9/06C08L21/00B60C1/0025C08K3/0033C08L15/00B60C2009/0276C08C19/06C08L9/00B60C1/0008B60C2013/006C08L23/22C08L2205/02C08K3/04C08K3/013Y02T10/86C08L2666/02C08L2666/08
Inventor 宫崎达也
Owner SUMITOMO RUBBER IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com