1、Synthesis and Characterization of Multifunctional Secondary Thiol

Using the synthesized 3-MBA, multifunctional secondary thiol (sec -thiol) compounds were obtained and applied to thiol–epoxy curing systems as hardeners. As the functionality of the sec -thiol hardeners increased, the purity of the product obtained after distillation decreased.

2、Rational design of a room

In this study, we introduce a rational design strategy for high-strength, high-adhesion coatings by the room-temperature photoanionic curing of epoxy resins with a thiol cross-linker without void concern, making use of a PBG that can generate a superbase without decarboxylation (Scheme 1).

3、A simple and versatile photothermal dual

This thiol-mediated dual-curing system has potential applications in electronic materials and personal protective equipment can contribute to achieving miniaturization, precision, and integration in various applications.

Heat Resistance Improvement

Shikoku Chemical's resin cross-linking agents, thiol resin curing agents, and high heat-resistant resins that can achieve improved heat resistance.

Epoxy curing｜Karenz

Thiols can be combined with other curing agents such as amines, acid anhydrides and phenols. It is suitable for low temperature epoxy resin curing systems in combination with base catalysts.

Thioester

This study proposes an effective solution to extend the use of thiol-type curing agents, overcoming their short shelf life and presenting a more industry-friendly method.

Synthesis and Characterization of Multifunctional Secondary Thiol

Using the synthesized 3-MBA, multifunctional secondary thiol (sec -thiol) compounds were obtained and applied to thiol–epoxy curing systems as hardeners. As the functionality of the sec -thiol hardeners increased, the purity of the product obtained after distillation decreased.

Synthesis and characterization of hyperbranched thiol hardener and

S.M. Hong, S.H. Hwang, Synthesis and characterization of multifunctional secondary thiol hardeners using 3-mercaptobutanoic acid and their thiol−epoxy curing behavior.

Enhanced durability of a novel thiol

In this study, we synthesized a tetrafunctional thiol compound, bis [3- (3-sulfanylpropyl)-4- (3-sulfanylpropoxy)phenyl]sulfone (TMBPS) with rigid and ester-free structures to replace traditional commercial thiol curing agents, pentaerythritol tetra (3-mercaptopropionate) (PETMP).

Multifunctional Thiol

Used for resists, adhesive agents, coating materials, inks, paints, repairing materials, FRP resins, etc. *Links to KarenzMT website. An ester-type multifunctional secondary thiol.

In the field of chemical engineering, advancements in materials science often accompany the development and application of new materials. Among these, multifunctional thiol epoxy curing agents, as a class of high-performance organic compounds, have found widespread use in electronics, automotive, construction, and other industries. This article provides an in-depth exploration of the composition, characteristics, and practical applications of multifunctional thiol epoxy curing agents.

I. Composition and Characteristics of Multifunctional Thiol Epoxy Curing Agents

Multifunctional thiol epoxy curing agents are high-molecular-weight compounds synthesized through specific chemical reactions between polythiols and epoxy resins. Their core component is polythiols, compounds containing two or more thiol groups (–SH). These thiol groups react with epoxide groups (–C–O–C–) in epoxy resins to form stable chemical bonds, enabling the curing process.

Compared to other epoxy curing agents, multifunctional thiol epoxy curing agents exhibit the following features:

1. High Reactivity: Thiol groups in polythiols possess strong nucleophilic properties, allowing rapid cross-linking reactions with epoxide groups. This accelerates curing speed and enhances mechanical strength.

2. Excellent Flexibility: The presence of thiol groups ensures flexibility during curing, resulting in materials with superior mechanical performance, including impact resistance and elongation.

3. Outstanding Water Resistance: The cured network structure formed by these agents demonstrates high hydrolytic stability, effectively resisting moisture penetration and corrosion.

4. Environmental Friendliness: Compared to traditional epoxy curing agents, multifunctional thiol-based systems generate fewer hazardous byproducts during production and application, aligning with eco-friendly requirements.

II. Application Fields of Multifunctional Thiol Epoxy Curing Agents

1. Electronics Industry: Used in semiconductor manufacturing and photoresist formulations to produce high-performance insulating layers and photoetching materials, meeting the demands for high-speed and precision processing.

2. Automotive Manufacturing: Employed to fabricate lightweight, high-strength, and impact-resistant automotive components, such as engine parts and structural frames.

3. Construction Sector: Utilized in concrete additives, waterproof coatings, and repair materials to enhance durability, tensile strength, and resistance to environmental wear.

4. Aerospace Engineering: Critical for manufacturing heat-resistant, radiation-resistant composites, such as spacecraft exteriors and satellite antenna covers.

III. Future Prospects of Multifunctional Thiol Epoxy Curing Agents

With technological advancements and evolving market demands, the application scope of multifunctional thiol epoxy curing agents is expected to expand further. For instance, in emerging fields like new energy vehicles and intelligent robotics, next-generation formulations could play a pivotal role. Additionally, growing environmental regulations will drive research toward greener, low-carbon variants of these curing agents.

as a high-performance organic compound, multifunctional thiol epoxy curing agents hold immense potential across diverse industries. Driven by scientific progress and market needs, they are poised to become even more integral to future technological innovations.