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Epoxy Resin Curing Agent Contacts Tokyo:+81-3-5540-8105 Osaka:+81-6-6203-3963

As a comprehensive manufacturer of acid anhydrides, New Japan Chemical Co., Ltd. offers a wide range of products, from acid anhydrides with advanced functions, such as heat and weather resistance, to exceptionally versatile alicyclic acid anhydride types. Acid anhydrides are incredibly miscible with epoxy resins and ensure low shrinkage during resin curing, thereby imparting remarkable dimensional stability in the resulting cured epoxy resin. As such, they are commonly used as curing agents. Cured epoxy resins offer superior electric insulation and mechanical properties, as well as heat stability, and are widely used in electric and electronic insulation materials, semiconductor encapsulation materials, molding materials, adhesives, and more. From our wide array of products, we will propose the optimal acid anhydride according to the functions you require.

Liquid Acid Anhydrides

Liquid acid anhydrides feature a low viscosity and excellent impregnating ability. When combined with a large amount of fillers, they help reduce costs, which has led to their widespread adoption in a range of applications, including for lamination, filament winding (FW) molded products, and electric insulation and sealing materials (impregnation, casting) used in various transformers, coils, and capacitators.
RIKACID MH-700 is a liquid alicyclic acid anhydride, mainly consisting of 4- methyl HHPA. It is suitable for use in epoxy resin curing agents and gives a clear and colorless finish to products.
RIKACID MH-700G has improved features in heat resistance, color stability and degassing. This user-friendly product gives molded epoxy resin products a clear and colorless finish.
As an alicyclic acid anhydride developed by New Japan Chemical Co., Ltd., this epoxy resin curing agents is extremely suitable for optic electronic materials such as LEDs.

Solid Acid Anhydrides

RIKACID TH (THPA) and RIKACID HH (HHPA) are used as curing agents in transfer molding processes. THPA is used as a general-purpose item, whereas HHPA is used particularly in cases that require a colorless and transparent material.
These acid anhydrides form a low-viscosity liquid at curing temperatures and exhibit excellent impregnating ability, adhesiveness, and electric insulation, among other properties.
Our TMEG series of acid anhydrides are a collection of polyfunctional acid anhydrides that offer exceptional heat resistance when solid. They are used as curing agents in powder paints and coatings for exterior finishes on coils, hybrid integrated circuits (IC), and capacitors.
RIKACID TMEG-500 is used as curing agents for powder epoxy resins and improve adhesion and flexibility. TMEG-S is used in heat-resistant insulated varnish. TMEG-100 is used as raw materials in polymides and polyamide-imides.
RIKACID TBN-100 is an acid anhydride that allows for curing epoxy.

Heat-resistant Acid Anhydrides

RIKACID TMTA-C and MTA-15 are exceptionally heat-resistant epoxy resin curing agents available both in solid and liquid form depending on the applications.
RIKACID HNA-100 is an acid anhydride-based epoxy resin curing agent that also imparts resistance to heat. Its exceptional curing properties provide films that are thin, transparent, and resistant to moisture.

Flexible Acid Anhydrides

RIKACID HF-08 is used as a modifier and additive in combination with other acid anhydrides. It improves adhesion, flexibility, and resistance to thermal shock among other properties.