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Additive composition and method of preparing same

A manufacturing method and composition technology, applied in the field of additive composition and its manufacturing, can solve problems such as poor compatibility, low OH value of composition ratio content, and limited use range, so as to improve reproducibility, reliability, compatibility and plasticity Excellent, durability-improving effect

Active Publication Date: 2020-04-21
KOREA KUMHO PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is reported that this alkylphenol compound is a nephrotoxic endocrine system disrupting substance, and its use is currently banned worldwide, or its use is gradually restricted
[0004] Also, in the case of nonylphenol, dodecylphenol and styrenated phenol, when mixed with some curing agents for coatings (for example, polyamide curing agent, Jeffamine D-230), the color of the curing agent appears Problems turning red, making it difficult to use as a plasticizer or non-reactive thinner for clear coats
[0005] In order to solve the above-mentioned problems, a mixture of α-methylstyrenated phenols produced by reacting phenol and α-methylstyrene in the presence of an acid catalyst has conventionally been used as a non-reactive diluent. , the α-methyl styrenated phenol compound becomes solid (comparative example 1), or the OH value is low due to the difference in the composition ratio content, so when it is mixed with a paint, the compatibility is poor, so it is difficult to be used as a plasticizer for paint or non reactive diluent

Method used

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  • Additive composition and method of preparing same
  • Additive composition and method of preparing same
  • Additive composition and method of preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] Sulfuric acid catalyst (0.135g, 0.0013eq) was added to phenol (100g, 1eq) and α-methylstyrene (138g, 1.1eq) was added dropwise for 120 minutes until its temperature rose from 70°C to 90°C. After the dropwise addition of α-methylstyrene was completed, the reaction was further performed at the same temperature for 1 hour. Through gas chromatography (Gas chromatography, GC) analysis results, it was confirmed that the mixture of 5.06% tricresyl indane (TMPI) and diphenylmethylpentene (DMP), 63.28% cumylphenol and 25.4% diphenylmethane The ratio of cumylphenol is generated.

[0096] Thereafter, at the same temperature, styrene (66.4 g, 0.6 eq) was further added dropwise for 60 minutes. After the dropwise addition of styrene was completed, the reaction was further performed at the same temperature for 1 hour, thereby obtaining an α-methylstyrenated phenol mixed solution. Sodium bicarbonate (0.116 g, 0.0013 eq) was dissolved in distilled water and added to the resulting solu...

experiment example 1

[0104] The analysis results of the compositions produced according to the above-mentioned Examples and Comparative Examples 1 to 3 are shown in Table 1 below.

[0105] [Table 1]

[0106]

[0107] Production example and comparative production example

[0108] Diluents for epoxy resins require prevention of discoloration and durability, and dodecylphenol has been used as a diluent or modifier for epoxy resins in the past. The epoxy coating composition is a two-component coating divided into a main agent part and a curing agent part, and in this production example, additives are applied to the main agent part.

[0109]In order to compare the α-methyl styrenated phenol composition produced in the above examples with nonylphenol and dodecylphenol which have been conventionally used as diluents for epoxy resins, a main component part was produced. KER-828 of Kumho P&B Chemical Co., Ltd. was used as the epoxy resin, and the specific compounding ratio is shown in Table 2 below....

experiment example 2

[0123] Experimental example 2: measure the drying time (Drying time) of epoxy coating composition

[0124] In the epoxy coating compositions of the above-mentioned production examples and comparative production examples, the epoxy resin contained in the main agent part and the amine in the curing agent part react when the main agent part and the curing agent part are mixed, thereby passing through the crosslinking reaction ( Crosslinkingreaction) was dried.

[0125] The drying time of the above-mentioned epoxy coating composition was evaluated using the BK-drying time recorder of Elcometer Company, and the results are shown in Table 5 below. The above evaluation was performed by measuring the time taken until the coating film having a thickness of 400 μm at 25° C. was dried.

[0126] [table 5]

[0127]

[0128]

[0129] Referring to Table 5 above, it was confirmed that the curing and drying of Comparative Production Example 1 using conventional dodecylphenol as a dil...

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Abstract

The invention relates to an additive composition and a method of preparing the same. According to one aspect of the present invention, since an additive composition includes a specific amount of alpha-methylstyrenated phenol, the additive composition can be mixed with a main material part or curing agent part for paint and can suppress the occurrence of a discoloration issue.

Description

technical field [0001] The present invention relates to an additive composition and a manufacturing method thereof, more particularly, to an additive composition comprising α-methyl styrenated phenol and a manufacturing method thereof, the above additive composition can be used as a plasticizer for epoxy coatings solvent or non-reactive diluent. Background technique [0002] Conventionally, various non-reactive diluents have been used in order to impart plasticity to epoxy paints and to use them as diluents. Examples of representative non-reactive diluents include alkylphenols such as nonylphenol, dodecylphenol, and octylphenol, benzyl alcohol, C 5 -C 9 Hydrocarbon resins, mixtures of phenols and styrenated phenols, and α-methylstyrene oligomers, etc. [0003] Among them, alkylphenol compounds have been widely used as additives or surfactants for epoxy paints requiring plasticity in terms of molecular structure and chemical properties. However, it is reported that this a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/63C09D7/20C09D163/00
CPCC09D7/63C09D7/20C09D163/00C08K5/13C08K5/005C08G59/62C07C37/14C07C39/15C08K5/01
Inventor 卢奇润蒋正姬朴润哲曺南显
Owner KOREA KUMHO PETROCHEMICAL CO LTD
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