Flame-retardant plasticizer containing phosphate triester compound and 3,5,6-trichloropyridine-2-ol compound, and preparation thereof
A technology of trichloropyridine and phosphoric acid triester, applied in the field of flame retardant plasticizer, can solve the problems of high purification cost of target products, difficult to handle by-products, difficult separation, etc., and achieves high cost performance, good compatibility and low price Effect
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Embodiment 1
[0028] A kind of flame retardant plasticizer containing phosphoric acid triester compound and 3,5,6-trichloropyridin-2-alcohol compound, its preparation method comprises the following steps:
[0029] (1) Fix a 1.5L three-neck glass flask on an iron stand, use an asbestos electric heating sleeve to stabilize the bottom, and connect an electric stirring and feeding funnel.
[0030] (2) Accurately weigh 600 g of trimethyl phosphate, 150 g of dimethyl sulfoxide, and 250 g of 3,5,6-trichloropyridin-2-ol in marked flasks.
[0031] (3) Add the above-mentioned weighed trimethyl phosphate and dimethyl sulfoxide through the funnel in turn, start electric stirring, and control the rotating speed to be 80 rpm.
[0032] (4) While stirring, add the weighed 3,5,6-trichloropyridin-2-ol through the funnel, after the addition is complete, cover with a rough-edged glass stopper, and adjust the stirring speed to 130 rpm.
[0033] (5) Stir until the materials in the three-necked flask are mixed e...
Embodiment 2
[0036] (2) Accurately weigh 667 g of trimethyl phosphate, 41 g of dimethylformamide, and 292 g of 3,5,6-trichloropyridin-2-ol in marked flasks, and the other steps are the same as in Example 1.
Embodiment 3
[0038] (2) Accurately weigh 667 g of trimethyl phosphite, 41 g of dimethyl sulfoxide, and 292 g of 3,5,6-trichloropyridin-2-ol in marked flasks, and the other steps are the same as in Example 1.
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