Novel rubber protective wax

A technology of rubber protective wax and paraffin wax, which is applied in the field of rubber protective wax to achieve the effect of increasing speed, improving flexibility and viscosity, and reducing space

Active Publication Date: 2010-02-17
上海绿菱特种蜡制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that there is still a relatively large space between the crystals in the crystal lattice of the existing protective wax, that is to say, the sealing performance of the currently used protective wax still needs to be improved and improved.

Method used

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  • Novel rubber protective wax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of rubber protective wax, which contains components and the weight percentage of each component: 15% of paraffin wax, 56% of mixed crystal wax, 28% of microcrystalline wax, and 1% of polyethylene wax.

[0022] Wherein, the fusing point of described paraffin is 60 ℃; The content of normal paraffin in this paraffin is 72%, and the content of non-normal paraffin is 27.5%, also comprises 0.5% non-hydrocarbon substance (such as nitrogen, sulfur or trace metals such as oxygen).

[0023] The melting point of the mixed crystal wax (intermediate wax) is 70°C; the non-normal paraffin content in the mixed crystal wax is 38%.

[0024] The melting point of the microcrystalline wax is 85°C; the non-normal paraffin content in the microcrystalline wax is 59%.

[0025] The molecular weight of described polyethylene wax is 2500.

Embodiment 2

[0027] A kind of rubber protective wax, which contains components and the weight percentage of each component: 17% of paraffin wax, 57% of mixed crystal wax, 24% of microcrystalline wax, and 2% of polyethylene wax.

[0028] Wherein, the melting point of the paraffin is 65°C; the content of normal paraffin in the paraffin is 74%, the content of non-normal paraffin is 25.5%, and it also contains 0.5% of non-hydrocarbon substances.

[0029] The melting point of the mixed crystal wax (intermediate wax) is 74°C; the non-normal paraffin content in the mixed crystal wax is 39%.

[0030] The melting point of the microcrystalline wax is 88°C; the non-normal paraffin content in the microcrystalline wax is 59.5%.

[0031] The molecular weight of described polyethylene wax is 2800.

Embodiment 3

[0033] A rubber protective wax, which contains components and the weight percentage of each component are: 16% of paraffin wax, 58% of mixed crystal wax, 24.5% of microcrystalline wax, and 1.5% of polyethylene wax.

[0034] Wherein, the melting point of the paraffin is 58° C.; the content of normal paraffins in the paraffin is 73%, the content of non-normal paraffins is 26.5%, and 0.5% of non-hydrocarbon substances are also included.

[0035] The melting point of the mixed crystal wax (intermediate wax) is 72°C; the non-normal paraffin content in the mixed crystal wax is 38.5%.

[0036] The melting point of the microcrystalline wax is 82°C; the non-normal paraffin content in the microcrystalline wax is 60%.

[0037] The molecular weight of described polyethylene wax is 2300.

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Abstract

The invention discloses a novel rubber protective wax which comprises the following components in percentage by weight: 14-20 percent of paraffin, 55-60 percent of mixed crystal wax, 24-30 percent ofmicrocrystalline wax and 1-2 percent of polyethylene wax. The invention has favorable seal performance and can reinforce the ozone and ageing resistance of a rubber product and prolong the service life of the rubber product.

Description

technical field [0001] The invention relates to a rubber protective wax, in particular to a rubber protective wax with good airtightness and adhesion. Background technique [0002] Traditional protective waxes are composed of mixtures of different hydrocarbons. For example, German researchers believe that in order to adapt the protective wax to both high temperature and low temperature applications, the normal hydrocarbon contained in the protective wax must be greater than about 60%. For another example, Japanese researchers believe that in order to make the protective wax have good anti-aging performance at low temperature and high temperature, the protective wax should be composed of a mixture of normal paraffins and non-normal paraffins. [0003] The commonly used rubber protective wax is a mixture of paraffin wax and microcrystalline wax. It is added during the production of rubber, and then the protective wax dissolves in the rubber and gradually migrates to the surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06
Inventor 徐仁良
Owner 上海绿菱特种蜡制品厂
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