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Method of producing an impermeable rubber layer

A production method, technology of rubber layer, applied in the direction of latex adhesive, transportation and packaging, special tires, etc., which can solve the problems of poor quality, limit of layer thickness reduction, damage to the mechanical properties of the final product, etc.

Inactive Publication Date: 2012-09-05
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor blending and / or compatibility of fillers with the remaining rubber matrix impairs the mechanical properties of the final product; the above problems are even compounded when the polymer class includes high Tg polymers
[0011] Also considered is the degree to which high energy consumption increases the economic impact and cost of the production process
[0012] Using current methods, there is a limit to how much the layer thickness can be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] The following is a description of the mixes produced according to the invention, characterized by the use of polymers comprising high Tg polymers in addition to butyl rubber, and / or by the low permeability achieved by the use of clay index.

[0032] Each mix is ​​produced by producing each aqueous emulsion by dispersing and mixing the various mix components in water. A portion of the aqueous emulsion is then sprayed or brushed onto the substrate and the water in the emulsion is evaporated.

[0033] In the following examples, two different surfactants (a, b) in the formula (I) class were used:

[0034] -Molecular formula CH 3 (CH 2 ) 7 CHCH(CH 2 ) 7 CONHCH 2 COO - Na + The surfactant (a); and

[0035] -Molecular formula CH 2 CH(CH 2 ) 8 CONHCH 2 COO - Na + Surfactant (b).

[0036] More specifically, emulsions were prepared by dispersing all of the ingredients in Table I simultaneously in sufficient water to form a homogeneous emulsion. The resulting aqu...

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PUM

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Abstract

A method of producing impermeable rubber layers, the method including: - a step of preparing a water-based emulsion having at least a cross-linkable polymer base, and a surface-active agent of molecular formula (I) (R1CONR2CHR3-COO-)nXn+ where: R1 is an aliphatic group C6-C23, R2 is H or an aliphatic group C1-C8, R3 is H or an aliphatic or aromatic group C1-C8, Xn+ is a metal cation, preferably an alkaline cation, and n is an integer of 1 to 3; and - a step of depositing the water-based emulsion on a surface.

Description

technical field [0001] The present invention relates to a method for producing an impermeable rubber layer. [0002] More specifically, the present invention relates to inner linings made of water-based emulsions, and the invention relates to the following description by way of example only. Background technique [0003] It is well known that many industrial applications increasingly require thin impermeable layers without compromising impermeability. [0004] In the tire industry, a thinner impermeable layer, known as an innerliner, is primarily approached using less material, with clear advantages in terms of yield, tire weight, overall vehicle fuel consumption, and rolling resistance. [0005] Mixes for the production of impermeable layers such as innerliners are usually prepared in a so-called Banbury internal mixer, which involves at least two mixing stages: an extended high temperature first mixing stage, in which the main mix is ​​prepared Gum, to which polymers are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C08K5/17C09J121/02C08J5/12C08L21/00
CPCB60C1/0008C08K3/04C08K5/175C08L23/283C08L33/08C08L2312/00C08L2666/04
Inventor S·科图尼奥P·史达菲尔
Owner BRIDGESTONE CORP
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