Acid Anhydrides

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    2426-02-0

    2426-02-0

    This product is mainly used in insecticides, chrysanthemum lipid pesticide intermediates, unsaturated polyester resins, hardener of epoxy resins and plasticizers.

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    Methy Tetra-Hydro Phthalic Anhydride 11070-44-3

    Methy Tetra-Hydro Phthalic Anhydride 11070-44-3

    Methyl tetra-Hydro Phthalic Anhydride (MTHPA) has been used in the curing agents for epoxy resins, solvent-free paints, laminated boards epoxy adhesives and so on. When used in the curing agent for epoxy resins, there are many excellent performances such as the long-term storage at room temperature, low freezing point, low volatility and low toxicity. Also widely used in motors, dry-type transformers, high voltage switches, transformers, line-output transformers, appliances capacitors, integrated circuits impregnation, casting and winding.

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    Modified Methyltetra-Hydro Phthalic Anhydride 25550-51-0

    Modified Methyltetra-Hydro Phthalic Anhydride 25550-51-0

    Modified Methyl tetra-Hydro Phthalic Anhydride was used in the curing agents for epoxy resins, dry-type transformers, high voltage switches, mutual inductors, condensers, LED, etc. Relative to the general MTHPA, this specification have the following characteristics:
    1. Light color when curing, suitable for white or colorless transparent products;
    2. Good heat resistance, higher Tg point;
    3. Faster curing speed, saving the amount of promoter;
    4. Larger viscosity, moisture absorption higher than the normal MTHPA, shall be sealed.

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    Hexahydrophthalic Anhydride

    Hexahydrophthalic Anhydride

    HHPA Mainly used in paints, epoxy curing agents, the polyester resins, adhesives, plasticizers, intermediates to prevent rust and etc.

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    Methy Nadic Anhydride

    Methy Nadic Anhydride

    1)Used in unsaturated polyester resins than the resins made by Phthalic anhydride or THPA, NA has better air-drying, higher heat resistance, degree of finish, electrical properties, corrosion resistance and mechanical strength.
    2)Used for the curing agent of epoxy resin, suitable for casting, lamination, powder molding, etc. The cured products have excellent weather resistance, heat resistance and electric properties.
    3)Used in the modifying agent of alkyd resin, urea-formaldehyde resin, melamine resins, etc.
    4)Can be used for pesticides, sulfide modifier, plasticizer, surfactant, textile penetrating agent, etc.

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    Methy Nadic Anhydride 25134-21-8

    Methy Nadic Anhydride 25134-21-8

    Mainly be used in epoxy curing agent. Features are as the below:
    1) Low viscosity at room temperature, small moisture absorption, can be used at low temperature and long stored;
    2) Mixing with epoxy resins, it has a long working life, slow curing speed and low exotherm.
    3) Small usage amount,the cured product has excellent heat-resistance and hardness, curing shrinkage rate is small;
    4) The cured product has high temperature resistance, aging resistance and excellent chemical resistance

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    108-30-5

    108-30-5

    Succinic Anhydride is usually used as the raw material of coatings, pharmaceuticals, synthetic resins and dyes. They have better properties of the curling resistance and waterproof for the coatings which are made from succinic anhydride. On pharmaceuticals, it is used to make Vitamin A and Sulfa drugs. On pesticides, it can be used to produce fungicides, insecticides and plant growth regulators. Succinic anhydride and its derivatives can be used as the catalyst for olefin polymerization, cross-linking agents for ester polymerization, light stabilizers for high polymers, ultraviolet absorbers, and also be used as auxiliary agents for petroleum industries. Succinic anhydride can be used to produce plasticizers, and there are also many other uses in the safety defense system.

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    Methylhexahydrophthalic Anhydride

    Methylhexahydrophthalic Anhydride

    Mainly used in the epoxy curing agent. MHHPA is heating-curing type of anhydride curing agent, mainly used in electrical and electronic fields, having the advantages of low melting point, low viscosity of complexes with the alicyclic epoxy resin, long life, high heat resistance, good high-temperature electric performance, etc. It can be used for impregnation of the electrical equipment coil and casting of the electrical components and seal of the semiconductors such as outdoor insulators, capacitors, LED, digital tubes.

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