Optical solid state prepolymers and molding compositions
A molding composition and prepolymer technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of light and heat resistance, the inability to effectively improve the light and heat resistance of thermoplastic materials, and the inability to apply high-power PLCC LED components, etc.
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[0027] Table 1 is the names, structures, and sources of the starting materials used in the examples.
[0028] Table 1 (mainly used drug list)
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[0030]
Synthetic example 1
[0031] Synthesis example 1 (SEP-1, linear silicone epoxy resin)
[0032] Add 9.93g of 4-ethylene-1-cyclohexene-1,2-epoxide, 10ppm trithiobutyl ether rhodium trichloride, and 0.0015g of N,N-dioctadecylmethylamine to 250ml In a double-necked reaction flask, add 50 mL of toluene and stir and heat to 100 °C. Then, at 100° C., 19.5 g of HMS-301 (Methylhydrosiloxane, purchased from Gelest) was added dropwise. After the HMS-301 drops, raise the temperature to 115°C and stir, and use FT-IR to monitor the reaction mixture at 2160cm -1 Whether the absorption peak (-SiH) at the place disappears, to judge whether the reaction is complete. After the reaction was complete, the temperature was lowered to room temperature. Carbon black is then added to the crude and stirred for purification. Finally, the carbon black was removed by filtration, and the toluene in the filtrate was removed by a rotary concentrator to obtain SEP-1.
Synthetic example 2
[0033] Synthesis Example 2 (SEP-2, Cyclic Siloxane Epoxy Resin)
[0034] Take 59.52g of 4-ethylene-1-cyclohexene-1,2-epoxide, 10ppm trithiobutyl ether rhodium trichloride, and 0.0015g of N,N-dioctadecylmethylamine into 250mL In a double-necked reaction flask, add 50 mL of toluene and stir and heat to 100 °C. Then, at 100° C., 24 g of 1,3,5,7-tetramethylcyclotetrasiloxane (SIT7530, purchased from Gelest) was added dropwise. After the SIT7530 drops, raise the temperature to 115°C and stir, and use FT-IR to monitor the reaction mixture at 2160cm -1 Whether the absorption peak (-SiH) at the place disappears, to judge whether the reaction is complete. After the reaction was complete, the temperature was lowered to room temperature. Carbon black is then added to the crude product and stirred for purification. Finally, the carbon black was removed by filtration, and the toluene in the filtrate was removed by a rotary concentrator to obtain SEP-2.
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