Acrylic acid and its esters are widely used in industry. In the process of use, acrylate is often polymerized into polymer or copolymer. Butyl acrylate (as well as methyl ester, ethyl ester and 2-ethylhexyl ester) is a soft monomer, which can be copolymerized, crosslinked and grafted with various hard monomers such as methyl methacrylate, styrene, acrylonitrile and vinyl acetate, as well as functional monomers such as hydroxyethyl (meth) acrylate, hydroxypropyl ester, glycidyl ester, (meth) acrylamide and YL derivatives, More than 200-700 acrylic resin products (mainly emulsion type, solvent type and water-soluble type) are widely used as emulsion, coatings, adhesives, acrylic fiber modification, plastic modification, fiber and fabric processing, paper processing agents, leather processing and acrylic rubber and many other aspects.
Butyl acrylate, also known as 2-butyl acrylate and n-butyl acrylate, is a colorless liquid with the molecular formula of C7H12O2. The chemical category is acryloyl compound. It is almost insoluble in water and its toxicity is similar to that of methyl acrylate. Irritating to skin and eyes. Soluble in ethanol, ether, acetone and other organic solvents. The product is obtained by esterification of acrylic acid and n-butanol in the presence of sulfuric acid, neutralization, water washing, dealcoholization and distillation. It is mainly used as organic synthesis intermediate, binder, emulsifier, coating, etc.
Butyl acrylate is a colorless liquid. The relative molecular weight is 128.17, the relative density is 0.8898, and the melting point is - 64.6℃. The refractive index is 1.4185 and the flash point is 49 ℃. Slightly soluble in water (0.14 at 20℃ and 0.12 at 40℃), soluble in ethanol, ether and acetone. Butyl acrylate and water can form an azeotrope. Health hazards of butyl acrylate: 1. Inhalation, oral administration or skin absorption are harmful to the body. Its vapour or mist can irritate the eyes, mucous membrane and respiratory tract. Poisoning symptoms include burning sensation, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.
Butyl acrylate belongs to acryloyl compounds. The melting point of butyl acrylate is - 64.6℃. The boiling point of butyl acrylate is 145.7℃.
The flash point refers to the minimum temperature when the petroleum product is heated to the instant flash fire when its steam contacts the flame under specified conditions. The lighter the oil, the lower the flash point. The flash point of butyl acrylate is 37 ° C.
Butyl acrylate is slightly soluble in water, with the solubility of 0.14g/100ml water (20℃) and 0.12g/100ml water (40℃). The solubility of water in n-butyl acrylate is 0.8ml/100g (20℃), which can be miscible with organic liquid agents such as ethanol and ether.
Butyl acrylate is a colorless oily liquid and flammable. The molecular structure formula CH2 = chcoo (CH2) 3coh3, and the molecular weight is 128.07. The relative density is 0.894.
In the study of self drying acrylic modified alkyd resin, butyl acrylate was selected as the formulation component of active acrylic resin, and butyl acrylate was added in order to reduce the glass transition temperature and improve the flexibility of the coating. An active acrylic resin with viscosity < 100s, solid content 50% and acid value 13 ~ 15mg KOH / g was prepared. The resin is one of the keys to the modification of alkyd products. This achievement creates conditions for the preparation of paint with excellent oil resistance, quick drying, high hardness and weather resistance. Butyl acrylate is an effective component frequently used in the paint industry to prepare multi-purpose and high-quality products, such as special paints for construction, automobile and household appliances.
Butyl acrylate gel, butyl acrylate emulsion pressure sensitive adhesive and adhesive tape for electrostatic flocking are used as raw materials for butyl acrylate. Foreign pressure-sensitive adhesives grow at an average annual rate of 8 ~ 10%. They are mainly used in the coating of paper cloth, nonwovens, PE, PVC, OPP and other industries, such as automotive instrument electronics, photographic color expansion, electrician and so on.
Acrylic acid can be used in detergents. The chelating agent is the main additive in detergent, which can save the active material, avoid leaving sediment on the fabric and make the washed fabric colorful. Chelating agents mainly include phosphate, nitrogen-containing organic chelating agents and acrylic polymers.
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