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Wax-for preventing rubber

A technology for rubber protective wax and paraffin, which is applied in the rubber industry and can solve the problems of long wax film time, slow migration speed of microcrystalline wax and thin wax film.

Inactive Publication Date: 2007-08-15
PETROCHINA CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the slow migration speed of microcrystalline wax, it takes a long time to form a wax film and the wax film is thin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Paraffin (No. 56) 22%

[0069] Microcrystalline wax (No. 70) 69%

[0070] Polyethylene Wax 5%

[0071] N-Propyl-N-Phenylphenylenediamine 1%

[0072] Dimethyl phthalate 0.5%

[0073] 2. 6-di-tert-butyl-p-cresol 0.5%

[0074] Weigh paraffin wax, microcrystalline wax, polyethylene wax and antioxidant according to the ratio of Example 1. The weighed 5% polyethylene wax and 69% 70 # Add microcrystalline wax into the reaction kettle, slowly heat to 130-145°C, start the agitator after melting, stir for 15-25 minutes, then add 22% of 56 # Paraffin, stir and mix for 20-30 minutes, finally add 1% of N-propyl-N-phenylphenylenediamine, 0.5% of dimethyl phthalate, 0.5% and 0.5% of 2,6-di-tert-butyl Base p-cresol 0.5%, stirring for 40-60 minutes. After passing through a filter, filtering impurities, and then cooling and forming, the product of the present invention is made.

Embodiment 2

[0076] Paraffin (No. 54) 25%

[0077] Microcrystalline wax (No. 75) 68%

[0078] Polyethylene Wax 6.5%

[0079] 2. 6-di-tert-butyl-p-cresol 0.5%

[0080] Weigh paraffin wax, microcrystalline wax, polyethylene wax and antioxidant according to the proportioning of Example 2. Weighed 6.5% polyethylene wax and 68% 75 # Add microcrystalline wax into the reaction kettle, slowly heat to 130-150°C, start the agitator after melting, stir for 20-25 minutes, then add 25% of 54 # Paraffin wax, stir and mix for 20-30 minutes, finally add 0.5% of 2,6-di-tert-butyl-p-cresol 0.5%, and stir for 40-50 minutes. After passing through a filter, filtering impurities, and then cooling and forming, the product of the present invention is made.

Embodiment 3

[0082] Paraffin (No. 58) 31%

[0083] Microcrystalline wax (No. 75) 60%

[0084] Polyethylene Wax 8.5%

[0085] Dimethyl phthalate 0.5%

[0086] Weigh paraffin wax, microcrystalline wax, polyethylene wax and antioxidant according to the proportioning of Example 3. Will weigh 7% of polyethylene wax and 60% of 75 # Add microcrystalline wax into the reaction kettle, slowly heat to 130-140°C, start the stirrer after melting, stir for 15-25 minutes, then add 31% of 58 # Paraffin, stir and mix for 20-35 minutes, finally add 0.5% dimethyl phthalate, stir for 40-55 minutes. After passing through a filtering machine to filter impurities, and then cooling and forming, the product of the present invention is made.

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Abstract

A protecting wax for rubber is proportionally prepared through mixing the paraffin wax with 40-70 deg.C for smelting point with microcrystalline wax with 70-90 deg.C for smelting point, and adding polyethene wax and the antioxidizing agent chosen from N-isopropyl-N-phenylbenzodiamine, dimethyl phthalate and 2,6-di-tert-butyl p-cresol. It can prevent ageing and cracking of rubber.

Description

technical field [0001] The invention relates to the rubber industry, in particular to a rubber protective wax. Background technique [0002] At present, my country's rubber industry is developing rapidly, but rubber products are "invaded" by oxygen and ozone in the air during processing, storage and use, and are also subject to physical factors such as light, heat, radiation, mechanical force and other chemical factors. As a result, a series of aging phenomena such as stickiness, hardening, brittleness or cracking will occur in rubber products, which seriously affects the application of rubber products in the tire industry. At present, the output of radial tires in my country is increasing year by year, and they are often stored in the open air before leaving the factory. Static ozone aging is a very serious problem. If it is not solved properly, the tires will be aging before leaving the factory, so corresponding protective measures must be taken. [0003] The protection of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06
Inventor 吕智宋舵徐文清刘成林李凤艳赵天波
Owner PETROCHINA CO LTD
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