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Tyre and crosslinkable elastomeric composition comprising an oxetane derivative and an amino acid

A cross-linked elastomer and oxetane technology, which is applied in special tires, tire parts, tire treads/tread patterns, etc., can solve problems such as poor affinity

Inactive Publication Date: 2011-06-29
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, despite the excellent tear resistance produced by the use of said white reinforcing filler, it also gives rise to a series of defects substantially related to the poor affinity of these fillers for the elastomeric polymers normally used in the production of this tire There are relationships

Method used

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  • Tyre and crosslinkable elastomeric composition comprising an oxetane derivative and an amino acid
  • Tyre and crosslinkable elastomeric composition comprising an oxetane derivative and an amino acid
  • Tyre and crosslinkable elastomeric composition comprising an oxetane derivative and an amino acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] Preparation of Elastomeric Compositions 1-4

[0168] Elastomeric compositions 1-4 given in Table 1 were prepared as follows (the amounts of the individual components are given in phr).

[0169] All components except sulfur and accelerator (CBS) were mixed together in an internal mixer (model Pomini PL 1.6) for about 5 minutes (first step). As soon as the temperature reached 145±5°C, the elastomeric composition was removed. Sulfur and accelerator (CBS) are then added and mixing is carried out in an internal mixer (type Thermo Haake Rheomix 3000p) at a maximum temperature of 100° C. for about 5 minutes (second stage).

[0170] Table 1

[0171]

[0172] ( * ):Compare

[0173] (^): The present invention

[0174] NR: STR20P93 natural rubber (Thaiteck Rubber, Thailand);

[0175] SBR1: Styrene / 1,3-butadiene copolymer prepared by emulsion, the styrene content is 23.5% by weight ( 1500 - Polimeri Europa);

[0176] SBR2: Emulsion-prepared (37.5 parts TDAE oil) sty...

Embodiment 2

[0195] Preparation of Elastomeric Compositions 5-10

[0196] Elastomeric compositions 5-10 given in Table 3 were prepared as follows (the amounts of the individual components are given in phr).

[0197] All components except sulfur, accelerator (CBS) and retarder (PVI) were mixed together in an internal mixer (model Pomini PL 1.6) for about 5 minutes (first step). As soon as the temperature reached 145±5°C, the elastomeric composition was removed. Sulfur, accelerator (CBS) and retarder (PVI) are then added and mixed in an internal mixer (model Thermo Haake Rheomix 3000p) at a maximum temperature of 100° C. for about 5 minutes (second step).

[0198] table 3

[0199]

[0200]

[0201] ( * ):Compare

[0202] (^): The present invention

[0203] BR: cis-1,4-polybutadiene (Europrene BR40-Enichem Elastomeri);

[0204] SBR3: Solution prepared (37.5 parts TDAE oil) styrene / 1,3-butadiene copolymer with a styrene content of 25.0% by weight (SLR 4630-Dow Plastics);

[02...

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Abstract

The present invention relates to a tyre comprising at least one structural element including a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition comprising: (a) 100 phr of at least one elastomeric polymer; (b) from about 0.1 phr to about 120 phr of at least one reinforcing filler; (c) from about 0.01 phr to about 20 phr of at least one oxetane derivative; and (d) from about 0.01 phr to about 10 phr of at least one amino acid. Preferably, said structural element is selected from: tread band, tread underlayer, bead filler, sidewalls, and sidewall inserts.

Description

technical field [0001] The present invention generally relates to tires and crosslinkable elastomeric compositions comprising oxetane derivatives and amino acids. [0002] The invention relates in particular to tires comprising at least one structural element obtained by crosslinking a crosslinkable elastomeric composition comprising an oxetane derivative and an amino acid, preferably having the general formula below. [0003] Furthermore, the present invention also relates to a crosslinkable elastomer composition comprising an oxetane derivative and an amino acid, and to a crosslinked article obtained by crosslinking the crosslinkable elastomer composition. Background technique [0004] In the rubber industry, especially tire manufacture, it is known practice to use additives in crosslinkable elastomeric compositions to improve the properties of the finished product, ie the crosslinked article. [0005] For example, the static and dynamic modulus of the elastomeric composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/1525C08K5/17C08L21/00B60C1/00
CPCB60C11/005B60C2001/0033C08K5/175B60C2011/0025B60C1/00C08K5/1525B60C1/0025B60C15/06B60C17/0009B60C1/0016C08L21/00
Inventor L·罗谢洛M·卡普里奥M·纳米亚斯南尼
Owner PIRELLI TYRE SPA
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