KR-20260063526-A - MANUFACTURING METHOD OF TBPH WITH IMPROVED YIELD THROUGH REMOVAL OF IMPURITIES

Abstract

The present invention relates to a method for manufacturing TBPH with improved yield through the removal of impurities, and more specifically, to a method for manufacturing TBPH (2,5-Dimethyl-2,5-di(t-butylperoxy)hexane), an organic peroxide used in the manufacture of synthetic resins that acts as an initiator, curing agent, crosslinking agent, etc. To this end, the TBPH manufacturing method comprises: a first step of reacting 2,5-dimethyl-2,5-hexanediol with hydrogen peroxide in the presence of an acid catalyst to produce an intermediate, 2,5-dimethyl-2,5-dihydroxyhexane; A second step of reacting the above 2,5-dimethyl-2,5-dihydroxyhexane with tert-butyl alcohol in the presence of an acid catalyst to produce crude TBPH (Crude 2,5-Dimethyl-2,5-di(t-butylperoxy)hexane); and a third step of washing the crude TBPH produced in the second step and removing impurities to obtain TBPH.

Inventors

• 형태경
• 배병옥

Assignees

• 형태경

Dates

Publication Date

20260507

Application Date

20241030

Claims (5)

1. A first step of preparing the intermediate 2,5-dimethyl-2,5-dihydroxyhexane by reacting 2,5-dimethyl-2,5-hexanediol with hydrogen peroxide in the presence of an acid catalyst; A second step of preparing Crude TBPH (Crude 2,5-Dimethyl-2,5-di(t-butylperoxy)hexane) by reacting the above 2,5-dimethyl-2,5-dihydroxyhexane with tert-butyl alcohol in the presence of an acid catalyst; and A third step of washing the crude TBPH produced in the second step above and removing impurities to obtain TBPH; A method for producing TBPH with improved yield, comprising
2. In paragraph 1, the acid catalyst is, A method for producing TBPH with improved yield, characterized by being a strong acid selected from the group consisting of sulfuric acid, nitric acid, perchloric acid, hydrochloric acid, and combinations thereof.
3. In paragraph 1, A method for producing TBPH with improved yield, characterized in that the third step of washing the crude TBPH produced in the second step and removing impurities to obtain TBPH is performed by stirring in a temperature range of 40℃ to 80℃.
4. In paragraph 1, A method for producing TBPH with improved yield, characterized in that the third step of washing the crude TBPH produced in the second step and removing impurities to obtain TBPH is performed by stirring for 10 to 120 minutes.
5. In paragraph 1, A method for producing TBPH with improved yield, characterized in that the yield of the obtained TBPH is 60% or more.

Description

Manufacturing Method of TBPH with Improved Yield Through Removal of Impurities The present invention relates to a method for manufacturing TBPH with improved yield through the removal of impurities, and more specifically, to a method for manufacturing TBPH (2,5-Dimethyl-2,5-di(t-butylperoxy)hexane; 2,5-dimethyl-2,5-di(t-butylperoxy)hexane), an organic peroxide used in the manufacture of synthetic resins that acts as an initiator, curing agent, crosslinking agent, etc. Generally, rubber packing refers to rubber products used to prevent fluid or gas leakage or the intrusion of dust or foreign substances from machinery or devices, and is currently widely used across various industries. These rubber packings serve to prevent the contents from leaking from the joint surface of a container in which liquid or gas is sealed, or to seal the contents from leaking out from the penetration point when the rotating shaft or reciprocating shaft of such a container penetrates. Rubber packings come in various materials and shapes depending on the environment, such as the sealing location, pressure, temperature, and movement. Recently, with the growth of the eco-friendly vehicle market, the demand for rubber seal products used in battery packs is on the rise. In order to provide the above battery pack, a battery pack gasket is required. A battery pack gasket refers to a product that seals the internal space between the upper and lower cases of the battery pack case to protect the expensive lithium-ion batteries inside from the external environment. EPDM (Ethylene Propylene Diene M-Class Rubber; dual synthetic rubber) is frequently used as such battery pack gaskets. EPDM satisfies the physical properties required for packing, such as weather resistance, ozone resistance, heat resistance, and permanent compression set, and is currently primarily used in automotive gaskets. EPDM is an organic peroxide, which means that an organic peroxide can be considered a derivative of hydrogen peroxide in which one or both of the hydrogen atoms are replaced by an organic group. The general formula of organic peroxide is the structure R1 - OOR2 , and as a Class 5 hazardous material , it is a compound in which one or two hydrogen atoms of hydrogen peroxide ( H2O2 ) are substituted with an organic atomic group, and organic peroxide becomes a radical source that spontaneously undergoes a self-reaction under specific conditions, such as heat, contaminants, etc. These organic peroxides are used in molecular polymerization and serve as initiators, curing agents, and crosslinking agents, and are used as additives in the manufacture of final synthetic resins. There is a wide variety of organic peroxides, and depending on their molecular structure, they can be classified into seven categories: alkyl hydroperoxide, dialkyl peroxide, diacyl peroxide, peroxy ketal, peroxy ester, and peroxy decarbonate. Among these, commercially used dialkyl peroxides are often used in combination with other peroxides in polymerization reactions, or are used for various purposes such as the polymerization of polystyrene and other polymers, crosslinking of polyethylene and other polymers, and the modification of polymer compounds at high temperatures, such as the decomposition of polypropylene. Commonly used dialkyl peroxides include 2,5-dimethyl-2,5-di(t-butylperoxy)hexane (TBPH), di-tert-butyl peroxide (DTBP), and di-tert-amyl peroxide (DTAP). Among the dialkyl peroxides described above, TBPH has a high decomposition temperature and excellent combustion performance. Since it does not produce products with carboxyl groups upon decomposition, it does not affect the thermal stability of rubber compounds and can be used in the rubber field, particularly in processes for manufacturing rubber containing carbon black. When TBPH is used, compression deformation is low and the elongation of vulcanized rubber is high, so it can also be used as a special vulcanizing agent for vinyl. Recently, due to the advancement of mobility components in the development of eco-friendly vehicles, there is a trend of attempts to replace metal battery pack cases with composite materials for the purpose of lightweighting to improve fuel efficiency and enhance battery pack performance. Accordingly, the performance requirements for battery pack gaskets that seal the internal space of the case are changing, and additional performance capabilities such as waterproofing, heat dissipation, and external shock absorption are being demanded. Meanwhile, the aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot necessarily be considered publicly known technology disclosed to the general public prior to the filing of the present invention. FIG. 1 is a flowchart illustrating a method for manufacturing TBPH with improved yield according to one embodiment