Epoxy fatty acid methyl ester is an inexpensive, non-toxic and environmentally friendly plasticizer. At room temperature, it is a slightly pale yellow, light oily, and transparent liquid. It can pass SGS 16P and REACH84 tests, and complies with EU ROHS environmental protection directives and US FDA food additives. rule. Under the premise of ensuring product quality, it can effectively replace 20-40% of main plasticizers such as dioctyl ester (DOP) dibutyl ester (DBP) citrate (ATBC), and the price is less than 70% of DOP, which can make The light and thermal stability of the product is greatly improved. Epoxy fatty acid methyl ester can be used in all PVC soft plastic products such as: agricultural film packaging film, artificial leather, slippers, sandals, rain boots, inflatable toys, plastic bags, hoses, wire and cable sheaths, medical drip bags, drip tubes, floor mats, plastic bags, Fire hoses, plastic-dipping labels and trademarks, plastic gloves, sealing strips, coated cloth, tarpaulin canvas, wallpaper, etc.
Epoxy fatty acid methyl ester is generated by the reaction of various straight chain fatty acids and methanol. The carbon chain of straight chain unsaturated fatty acid methyl ester is generally 16-18 carbons, and its structural formula is: R1-CH=CH-R2-COOCH: ( Wherein R1 and R2 are about 14-16). In the presence of H +, organic acid (formic acid as an example) reacts with H2O2 to generate peroxyformic acid, which immediately reacts with the unsaturated double bond in epoxy fatty acid methyl ester to generate epoxy fatty acid methyl ester. The main reaction can be expressed as:
(1) Epoxy preparation reaction
(2) Epoxy reaction
Common industrial product quality standards for epoxy fatty acid methyl esters: Index name Epoxy value of first-class product, % ≥ 3.5 Color, (Pt-Co) No. ≤ 150 Density, (ρ20℃) g/cm3 0.915～0.925 Iodine value, % ≤ 8.0 Acid value, mgKOH/g ≤ 0.5 Heating loss % ≤ 0.5 Flash point (Cleveland open cup method), ℃ ≥ 170.