phthalic anhydride

product specification:

product application:

Phthalic anhydride, a chemical compound derived from the oxidation of ortho-xylene or naphthalene, finds various applications across different industries. Here are some of its common uses:

1. Production of Plasticizers:

Phthalic anhydride is a key raw material in the production of phthalate ester plasticizers such as dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), and dioctyl phthalate (DOP). These plasticizers are widely used to impart flexibility and durability to PVC (polyvinyl chloride) products, including cables, flooring, and automotive parts.

2. Synthesis of Resins:

It is utilized in the manufacture of alkyd resins, which are important binders in the production of paints, coatings, and varnishes. Phthalic anhydride reacts with glycerol or fatty acids to form these resins, which exhibit excellent adhesion and durability properties.

3. Polyester Resins:

Phthalic anhydride is a precursor in the synthesis of unsaturated polyester resins (UPRs). UPRs are widely used in the production of fiberglass-reinforced plastics (FRP) for applications in construction, marine, automotive, and aerospace industries.

4. Dyes and Pigments:

It serves as a building block in the synthesis of certain dyes and pigments used in textiles, plastics, and coatings.

5. Pharmaceuticals:

Phthalic anhydride is used in the pharmaceutical industry for the production of certain pharmaceutical intermediates and active pharmaceutical ingredients (APIs).

6. Flame Retardants:

It is employed in the production of flame retardants used in textiles, plastics, and electronics to enhance fire resistance.

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