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Shandong Pulisi Chemical Co., Ltd to Showcase at UzChemPlast Expo 2026 in Tashkent.
Shandong Pulisi Chemical Co., Ltd to Showcase at UzChemPlast Expo 2026 in Tashkent Shandong Purex Chemicals Co., Ltd., a leading player in quality chemical manufacturing, is set to participate in the 15th UzChemPlast Expo—Uzbekistan’s key event for chemicals and plastics industries—taking place a...Read more -
What is ethanol?
I. Product and Identification Information English Name: Ethyl Alcohol; Ethanol Chemical Formula: C₂H₆O Relative Molecular Mass: 46.07 CAS Registry Number: 64-17-5 Chemical Structure: CH₃CH₂OH Hazard Class: Class 3.2 Flammable Liquid (Low Flash Point) Chemical Category: Alcohol II. Composition and...Read more -
How to separate maleic anhydride after esterification?
Rectification and Separation After esterification, rectification is needed to separate maleic anhydride from by-products. This process requires stable equipment and standardized operations. The separated maleic anhydride then undergoes further dehydration, decolorization, and impurity removal to ...Read more -
What are the reaction conditions and esterification reaction of maleic anhydride?
Maleic Anhydride Reaction Condition Control Maleic anhydride is produced via oxidation reactions, with key conditions including temperature, time, and pressure. Typical parameters are: temperature between 170–220°C, reaction time of 2–6 hours, and pressure of 1–3 MPa. These parameters should be a...Read more -
How to choose maleic anhydride catalyst?
Maleic Anhydride Catalyst Selection Oxidation reactions in maleic anhydride production rely on catalysts; commonly used options are organic salts and ammonium salts. Catalyst selection should consider activity, stability, and cost. Additionally, the concentration and dosage of the catalyst must b...Read more -
What are the requirements for selecting raw materials for maleic anhydride?
Maleic anhydride is a critical organic chemical, widely used in industries such as plastics, rubber, coatings, and pharmaceuticals. Below are the technical requirements for its production: Raw Material Selection The main raw materials for maleic anhydride are benzene and acetic acid. Benzene must...Read more -
How is maleic anhydride applied in the papermaking and pharmaceutical industries?
Papermaking Industry.maleic anhydride MA-modified resins are used as paper treatment agents; maleic anhydride MA-modified rosin (maleated rosin) is an internal sizing agent. Fumaric acid-modified rosin gum (a highly used acidic sizing agent) enhances paper stability with excellent oxidation and a...Read more -
How is maleic anhydride applied in the textile industry?
Textile Auxiliaries.A composite softener (based on thiodisuccinic acid long-chain ester, synthesized from MA maleic anhydride and stearyl alcohol) is used for softening cotton, silk, and polyester fabrics. MA is also used to make fluorescent whitening agents and dye dispersants for textile printi...Read more -
What is the effect of maleic anhydride on plasticizers?
Plasticizers.Maleic anhydride-derived dibutyl maleate and dioctyl maleate are excellent internal plasticizers for plastics. Hexahydrophthalic anhydride and diphenyl maleate (made from MA Maleic anhydride) are high-performance external plasticizers. Food Industry.Fumaric acid (from MA Maleic anhyd...Read more -
How is maleic anhydride applied in pesticides and coatings?
In coatings, maleic anhydride serves as a film-forming component for water-based, oil-based, and synthetic resin coatings (e.g., alkyd, polyester, maleic anhydride-modified rosin, and tung oil-maleic acid resins). Pesticides.Malathion (synthesized from maleic anhydride and P205) is a low-toxicity...Read more -
What is the application of maleic anhydride in Synthetic Resins?
Synthetic Resins Maleic anhydride reacts with polyols (followed by cross-linking with styrene) to form unsaturated polyester resins (UPR), a thermosetting resin. UPR is divided into fiber-reinforced plastics (FRP, commonly known as fiberglass-reinforced plastic) and non-reinforced plastics. FRP i...Read more -
What chemicals are produced from maleic anhydride?
Maleic anhydride applications are extremely broad, primarily used in the production of unsaturated polyester resins (UPR) (both reinforced and non-reinforced), coatings, paints, inks, engineering plastics, pharmaceuticals, pesticides, papermaking, textile auxiliaries, food additives, feed additiv...Read more