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Method for preparing C10 cobalt neodecanoate rubber adhesive promoter

A technology of cobalt carbonate rubber and adhesion promoter, applied in the field of material engineering, can solve the problems of reducing production cost, short reaction time, low heptane insoluble matter, etc., and achieve the advantages of reducing production cost, short process cycle and good economic benefits. Effect

Active Publication Date: 2012-05-02
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Abstract
  • Description
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Problems solved by technology

[0016] The purpose of the invention of the present invention is: adopt aromatic hydrocarbons such as toluene, xylene as solvent for existing C10 tertiary carbonic acid cobalt rubber adhesion promoter, can have a strong impact on the health of employees, pollute the environment, and adopt water as solvent, although can reduce Environmental pollution, but it will affect the performance of the product. A preparation method of C10 cobalt tertiary carbonate rubber adhesion promoter is provided. This method will not affect the health of employees, and can ensure the solubility of raw materials. The prepared In the product, the cobalt content and softening point all meet the national standard requirements, the trivalent cobalt content is low, the heptane insoluble matter is low, the reaction time is short, and the production cost is significantly reduced

Method used

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  • Method for preparing C10 cobalt neodecanoate rubber adhesive promoter
  • Method for preparing C10 cobalt neodecanoate rubber adhesive promoter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 17.18g of propionic acid, 48.68g of C10 tertiary carbonic acid, 7.30g of heptane, and 26.83g of cobalt hydroxide to a four-necked 250mL flask equipped with a stirrer, thermometer and oil-water separator, heat to 100°C, reflux, reflux Collect heptane, water and unreacted propionic acid, react at constant temperature for 1.5h, then heat to 200°C for 0.5h, keep at 200°C for 1.5h, and remove residual water vapor to obtain the product.

Embodiment 2

[0042] Add 12.39g of acetic acid, 52.15g of C10 tertiary carbonic acid, 10.43g of heptane, and 25.03g of cobalt hydroxide to a four-necked 250mL flask equipped with a stirrer, a thermometer, and an oil-water separator, heat to 100°C, reflux, and collect under reflux Heptane, water and unreacted acetic acid were reacted at constant temperature for 1.4h, then heated to 200°C for 1.0h, kept at 200°C for 1.8h, and the product was obtained after removing residual water vapor.

Embodiment 3

[0044] Add 13.15g of valeric acid, 49.58g of C10 tertiary carbonic acid, 12.40g of heptane, and 24.87g of cobalt hydroxide to a four-necked 250mL flask equipped with a stirrer, a thermometer and an oil-water separator, heat to 100°C, reflux, reflux Collect heptane, water and unreacted valeric acid, react at constant temperature for 1.4h, then heat to 200°C for 0.8h, keep at 200°C for 1.6h, and remove residual water vapor to obtain the product.

[0045] The properties of the products prepared in Examples 1-3 are shown in Table 1.

[0046] Exterior Total cobalt (%) Softening point (°C) Trivalent cobalt (%) Heptane insoluble matter (%) HG / T 4073-2008 blue-purple solid 20.5±0.5 80～100 / / Example 1 blue-purple solid 20.28 98 0.80 0.045 Example 2 blue-purple solid 20.34 81 0.83 0.090 Example 3 blue-purple solid 20.02 91 0.89 0.081

[0047] Reference standard: People's Republic of China chemical industry standard HG...

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Abstract

The invention relates to a method for preparing a C10 cobalt neodecanoate rubber adhesive promoter, and aims to solve the problems that the physical health of staff can be severely influenced and environmental pollution is caused if aromatic hydrocarbons such as methylbenzene, dimethylbenzene and the like are used as a solvent, and the environmental pollution can be reduced but product performance can be influenced if water is used as the solvent in the conventional C10 cobalt neodecanoate rubber adhesive promoter. The method comprises the following steps of: (1) performing low-temperature reaction; (2) heating; and (3) performing high-temperature reaction. By the preparation method, the physical health of the staff cannot be influenced, the solubility of raw materials can be ensured, the cobalt content and softening point of the prepared product meet the requirement of the national standard, the content of trivalent cobalt is low, the content of heptane insolubles is low, reaction time is short, production cost is obviously reduced, and product quality and stability are improved.

Description

technical field [0001] The invention relates to the technical field of material engineering, in particular to a preparation method of a C10 cobalt tertiary carbonate rubber adhesion promoter. Background technique [0002] The structural formula of C10 cobalt tertiary carbonate is as follows: [0003] , where R 1 , R 2 The same or different alkyl groups of straight chain or branched chain structure of 1 to 6 carbon atoms, R 1 +R 2 =C7. Cobalt C10 tertiary carbonate is mainly used as an adhesion promoter, widely used in rubber-metal composite products such as radial tires and conveyor belts, and used to bond steel wire and rubber. Usually, the softening point of one-component C10 cobalt tertiary carbonate is 60°C, and it is a viscous semi-solid organic cobalt salt at room temperature, which is not easy to transport, and it will also affect the physical and chemical properties of rubber, resulting in adhesion. Unstable, not conducive to rubber production. [0004] Ther...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C53/128
Inventor 肖英李毅黄超明陈春玉程长明王玲朱林刘杨
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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