Why source Phthalic Anhydride from Neuchem?

• Neuchem enjoys relationships with world-class producers of Phthalic Anhydride, enabling us to supply our customers with minimal lead times and cost savings.
• As an integral link in your supply chain, we deliver raw materials to your doorstep in a secure, cost-competitive, and friendly environment.
• Neuchem carefully selects our suppliers to guarantee high quality materials on a consistent basis.

To obtain more information about Phthalic Anhydride supply & inventory, please submit a quote request.

Uses/Applications

Epoxy Curing Agents
In the formulation of epoxy resins, Phthalic Anhydride can act as a curing agent. It reacts with the epoxy groups to cross-link the polymer chains, leading to a hardened and thermally stable final product. This process is essential in applications where high-performance and durable materials are required, such as in coatings, adhesives, and composite materials.

Plasticizers
Phthalic Anhydride is a key raw material in the production of phthalate plasticizers, which are widely used in PVC (polyvinyl chloride) products such as vinyl flooring, cables, toys, and packaging materials. These plasticizers improve the flexibility, durability, and workability of PVC products.

Alkyd Resins
Phthalic Anhydride is utilized in the synthesis of alkyd resins, which are essential components in coatings, paints, and varnishes. Alkyd resins provide excellent adhesion, weather resistance, and gloss to the coated surfaces. Phthalic anhydride undergoes esterification with fatty acids, such as linseed or soybean oil, to form alkyd resins.

Unsaturated Polyester Resins (UPR)
Phthalic Anhydride is a primary ingredient in the production of unsaturated polyester resins, which are widely used in fiberglass-reinforced plastics (FRP) applications such as automotive parts, marine components, and construction materials. Phthalic Anhydride reacts with glycols and Maleic Anhydride or Fumaric Acid to form unsaturated polyester resins through polyesterification and cross-linking reactions.

Phthalocyanine Dyes
Phthalic anhydride is a precursor in the synthesis of phthalocyanine dyes, which are highly stable and intense colorants used in printing inks, textiles, plastics, and coatings. Phthalic anhydride undergoes condensation reactions with urea or ammonia to form phthalocyanine compounds, which exhibit vibrant blue and green colors.

Phthalate Esters
Phthalic Anhydride is used in the synthesis of various phthalate esters, which serve as solvents, plasticizers, and intermediates in chemical processes. Examples of phthalate esters include dimethyl phthalate (DMP), diethyl phthalate (DEP), and dibutyl phthalate (DBP). These compounds find applications in cosmetics, personal care products, adhesives, and industrial formulations.

Polyester Polyols
Phthalic anhydride is employed in the production of polyester polyols, which are essential components in the manufacture of polyurethane foams, coatings, adhesives, and elastomers. Phthalic anhydride undergoes esterification with glycols, such as ethylene glycol or propylene glycol, to form polyester polyols, which subsequently react with diisocyanates to form polyurethane polymers.

End Markets

Plasticizers
Alkyd Resins
Unsaturated Polyester Resins (UPR)
Phthalocyanine Dyes
Phthalate Esters
Polyester Polyols