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Method for producing dicumyl peroxide

A technology of dicumyl peroxide and cumene hydroperoxide, which is applied in the production field of reducing dicumyl peroxide condensation by-products, can solve the problem of by-product α-MS, and achieve the reduction of α-MS, The effect of reducing by-products and reducing unit consumption

Active Publication Date: 2013-06-12
CHINA PETROCHEMICAL CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that there is a high problem of by-product α-MS in the prior art, and a new production method of dicumyl peroxide is provided

Method used

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  • Method for producing dicumyl peroxide
  • Method for producing dicumyl peroxide
  • Method for producing dicumyl peroxide

Examples

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Embodiment 1-10

[0020] Embodiment 1-10, comparative example 1-3

[0021] Under heating in a water bath and stirring, first add dimethyl benzyl alcohol (90-95% CA), and then add acid catalysts with different weight percentage concentrations, or acid catalysts and diluents into the reactor respectively, and then Add cumene hydroperoxide (45-65% CHP). Turn on the vacuum pump to make the pressure of the reaction system reach the required value, and the water generated by the reaction is pumped out of the reaction bottle through decompression bubbling to make the reaction proceed smoothly. The reaction temperature is 35-45°C, the gauge pressure is -0.10~-0.05MPa, the ratio of the main reaction materials is 1:1, and the solvent cumene is brought from cumene hydroperoxide oxidation solution and dimethyl benzyl alcohol. No additional solvent is needed, and the solvent accounts for about 35-40% of the condensed liquid. Other reaction conditions and results are shown in Table 2.

[0022] Table 2 Eff...

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Abstract

The invention relates to a method for producing dicumyl peroxide, and particularly relates to a production method for reducing a dicumyl peroxide condensation byproduct. The problem of high alpha-vinyltoluene content of the byproduct in condensation production is mainly solved. The method taking cumin as a solvent and dimethyl-benzyl carbinol and cumyl hydroperoxide as materials comprises the steps of carrying out reaction on the materials and a strong proton acid catalyst for 0.5-1 hour and carrying out condensation dehydration to generate the dicumyl peroxide under the conditions that the reaction temperature is 30-60 DEG C and the reaction manometer pressure is -0.1MPa. By adopting the production method disclosed by the invention, the condensation side effect of the dicumyl peroxide is reduced; the alpha-vinyltoluene content in condensation solution is reduced; the reaction selectivity is improved; and DCP (dicalcium phosphate) yield and quality are improved, so as to reduce isopropyl benzene consumption and reduce the production cost. On the other hand, the acid catalyst recommended to use is low in concentration, and safer in the production process.

Description

technical field [0001] The invention relates to a production method of dicumyl peroxide, in particular to a production method for reducing condensation by-products of dicumyl peroxide. Background technique [0002] Dicumyl peroxide, referred to as DCP, also known as dicumin peroxide, is mainly used as a crosslinking agent and polymer for various olefin polymers and copolymers including polyethylene, chlorinated polyethylene, and silicone rubber. A polymerization initiator for styrene and a curing agent for unsaturated polyester resins. After DCP is cross-linked, the physical properties of the polymer are greatly improved, and its heat resistance, chemical resistance, pressure resistance, crack resistance and mechanical strength are all increased. DCP is widely used in wire and cable, shoemaking, building materials and other industries. In recent years, with the continuous expansion of the polymer material market, the demand for DCP has increased year by year, and the market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C409/16C07C407/00
Inventor 谭永生吴成跃崔敏华顾亮杨春宝
Owner CHINA PETROCHEMICAL CORP
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