A kind of composite pentaerythritol phosphite and its preparation method and application
A technology for compounding pentaerythritol phosphite and pentaerythritol phosphite is applied in chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry and other directions, can solve problems such as cumbersome production processes, and achieve simple preparation methods Effect
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[0025] Please refer to figure 1 , a preparation method of composite pentaerythritol phosphite, comprising the following steps:
[0026] S1. Add M to the reactor 1 mol of phosphorous acid, stirred, heated to a completely transparent state;
[0027] S2. Under negative pressure, add M 2 mol of pentaerythritol, the molar ratio of phosphorous acid and pentaerythritol is M 1 :M 2 =1:(5-15), part M 2 mol of pentaerythritol is added several times in the temperature range of 100-200°C until the reaction system is uniform. In the temperature range of 100-200°C, every 10-20°C is a temperature gradient, and pentaerythritol is added to each temperature gradient, and then the temperature is raised to below One temperature gradient, the amount of pentaerythritol added to the next temperature gradient and the amount of pentaerythritol added to the previous temperature gradient are in equal parts, increasing amounts or decreasing amounts, and then add the remaining pentaerythritol, and ke...
Embodiment 1
[0034] Add 1.0 mol of phosphorous acid into the reactor, stir, heat to 90°C in a completely transparent state, and add 8.0 mol of pentaerythritol in multiple times at multiple temperature ranges of 100-200°C under slight negative pressure. Specifically:
[0035] temperature / ℃ Feed amount of pentaerythritol / mol operate 90 1.0 Continue to heat to 100°C, stirring and reacting into a homogeneous translucent state 100 1.0 Continue to heat to 110°C, stirring and reacting into a homogeneous translucent state 110 1.0 Continue to heat to 120°C, stirring and reacting into a homogeneous translucent state 120 1.0 Continue to heat to 130°C, stirring and reacting into a homogeneous translucent state 130 0.5 Continue to heat to 140°C, stirring and reacting into a homogeneous translucent state 140 0.5 Continue to heat to 150°C, stirring and reacting into a homogeneous translucent state 150 0.5 Continue to heat to 160°C, stirring and...
Embodiment 2
[0038] Add 1.0 mol of phosphorous acid into the reactor, stir, heat to 95°C in a completely transparent state, and add 10.0 mol of pentaerythritol in multiple times at multiple temperature ranges of 100-200°C under slight negative pressure. Specifically:
[0039] temperature / ℃ Feed amount of pentaerythritol / mol operate 95 1.5 Continue to heat to 100°C, stirring and reacting into a homogeneous translucent state 100 1.5 Continue to heat to 110°C, stirring and reacting into a homogeneous translucent state 110 1.0 Continue to heat to 120°C, stirring and reacting into a homogeneous translucent state 120 1.0 Continue to heat to 130°C, stirring and reacting into a homogeneous translucent state 130 1.0 Continue to heat to 140°C, stirring and reacting into a homogeneous translucent state 140 1.0 Continue to heat to 150°C, stirring and reacting into a homogeneous translucent state 150 0.5 Continue to heat to 160°C, stirring an...
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