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Method to produce reinforced halobutyl elastomer compounds

A halogenated butyl and elastomer technology, applied in the field of preparing reinforced elastomers, can solve problems such as unclear

Inactive Publication Date: 2007-08-29
LANXESS CORP (CA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of silanes in combination with DMAE has been largely unstudied and it is unclear whether there are synergistic effects that could provide the desired combination of dynamic properties in tread formulations

Method used

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  • Method to produce reinforced halobutyl elastomer compounds
  • Method to produce reinforced halobutyl elastomer compounds
  • Method to produce reinforced halobutyl elastomer compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0093] Example 1-4 (Mixture of DMEA and Si-69)

[0094] Table 1: Formulas of Compounds 1-7

[0095] tag

Ingredients (phr)

Comparison

1

Comparison

2

Example

3

Example

4

Example

5

Example

6

Example

7

BUNA TM CB 25

1A

50

50

50

50

50

50

50

LANXESS

BROMOBUTYL 2030 1A

50

50

50

50

50

50

50

Silane Si-69

1A

0

0

0.8

2.4

3.2

2.4

3.2

HI-SIL TM 233

1B

30

30

30

30

30

30

30

N,N-Dimethylethanolamine

1B

1.4

1.4

1.4

1.4

1.4

0.7

0.7

Hexamethyldisilazane

1B

0

0.73

0

0

0

0

0

Carbon black, N234 VULCAN 7

1C

30

30

30

30

30

30

30

Stearic acid

1C

1

1

1

1

1

1

1

CALSOL...

Embodiment 1

[0098] Examples 1 and 2 are comparative rubber compounds. Example 1 only uses DMAE as the silica modifier for the BIIR tread compound, while Example 2 uses two modifiers, DMAE and HMDZ (both play a role in improving filler dispersion and the degree of reinforcement). Examples 3-7 use a combination of DMAE and Si-69 to obtain improved compounding performance.

[0099] Analysis of the physical data of Examples 3-5 (see Table 2) shows that as the amount of Si-69 matching enhancement of the DMAE / HMDZ compound increases, the enhancement degree increases. One of its important effects is that the hardness of the rubber compound remains higher than that of the comparative rubber compound Example 2. In addition, the wear resistance appears to be improved, as evidenced by the DIN abrasion value for all compounds. In addition, most importantly, the tgδ values ​​at -20 and 0°C (an indication of improved grip) were maintained in Example 5, while significantly reducing the expected rolling resi...

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Abstract

The present invention relates to halobutyl elastomer compounds containing a butyl elastomer, at least one additional elastomer, a mineral filler and a mixed modifier system of a silane compound and an additive derived from a compound containing at least one hydroxyl group and a functional group containing a basic amine.

Description

Technical field [0001] The present invention relates to a halogenated butyl elastomer compound, which contains butyl elastomer, at least one additional elastomer, mineral filler, and a silane compound derived from a compound containing at least one hydroxyl group and a basic amine functional group The mixed modifier system of additives. [0002] The present invention also relates to a method for preparing a reinforced elastomer, which comprises mixing a halogenated butyl elastomer, at least one additional elastomer, a mineral filler, and a silane compound and a compound containing at least one hydroxyl group and a basic amine functional group. Mixed modifier system of derived additives. Background technique [0003] Butyl rubber (IIR), a random copolymer of isobutylene and isoprene, is well known for its excellent thermal stability, ozone resistance and required damping characteristics. Commercially, in a slurry process, methyl chloride is used as a carrier and Friedel-Crafts cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08K5/5415C08K3/00
CPCC08K5/548C08L23/26C08K5/17C08L9/06C08L7/00C08L23/283C08L23/22C08K3/0033C08L21/00C08L9/00C08L2312/00C08K5/54C08K3/013C08L2666/06C08L2666/08C08L2666/04
Inventor K·库尔巴巴R·雷森迪斯
Owner LANXESS CORP (CA)