Hardening composition
A technology of composition and compound, applied in the direction of electric solid-state devices, semiconductor/solid-state device parts, instruments, etc., can solve the problems of low light transmittance, low heat resistance and light resistance, etc.
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Embodiment 1
[0163] A curable composition is prepared by mixing 30 g of a polyorganosiloxane of formula A, 100 g of a polyorganosiloxane of formula B, 200 g of a polyorganosiloxane of formula C, and 50 g of a polyorganosiloxane of formula D, A catalyst (platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane) was incorporated to have a Pt(0) content of 5 ppm and the resulting mixture was uniformly mixed. Here, the absolute value of the difference between the refractive index (A) of the polyorganosiloxane of formula A and the refractive index (B) of the polyorganosiloxane mixture of formulas B, C and D is 0.09.
[0164] [Formula A]
[0165] (ViMe 2 SiO 1 / 2 ) 2 (Me 2 SiO 2 / 2 ) 40
[0166] [Formula B]
[0167] (ViMe 2 SiO 1 / 2 ) 2 (Me 2 SiO 2 / 2 ) 20 (Ph 2 SiO 2 / 2 ) 15
[0168] [Formula C]
[0169] (ViMe 2 SiO 1 / 2 ) 2 (PhSiO 3 / 2 ) 8
[0170] [Formula D]
[0171] (HMe 2 SiO 1 / 2 ) 2 (HMeSiO 2 / 2 ) 0.5 (Ph 2 SiO 2 / 2 ) 1.5
Embodiment 2
[0173] A curable composition is prepared by mixing 30 g of a polyorganosiloxane of formula E, 300 g of a polyorganosiloxane of formula F and 70 g of a polyorganosiloxane of formula G, incorporating a catalyst (platinum(0)-1 , 3-divinyl-1,1,3,3-tetramethyldisiloxane) to have a Pt(0) content of 5 ppm and mix the resulting mixture uniformly. Here, the absolute value of the difference between the refractive index (A) of the polyorganosiloxane of formula E and the refractive index (B) of the polyorganosiloxane mixture of formulas F and G is 0.07.
[0174] [Formula E]
[0175] [ViMe 2 SiO 1 / 2 ] 2 [Me 2 SiO 2 / 2 ] 40 [MeSiO 3 / 2 ] 5
[0176] [Formula F]
[0177] [ViMeSiO 2 / 2 ] 2 [PhSiO 3 / 2 ] 6.5
[0178] [Formula G]
[0179] [HMe 2 SiO 1 / 2 ]2 [HMeSiO 2 / 2 ] 0.5 [Ph 2 SiO 2 / 2 ] 1.5
Embodiment 3
[0181] A curable composition was prepared by mixing 30 g of a polyorganosiloxane of formula H, 100 g of a polyorganosiloxane of formula I, 20 g of a polyorganosiloxane of formula J, and 20 g of a polyorganosiloxane of formula K , a catalyst (platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane) was incorporated so that the Pt(0) content was 5 ppm and the resulting mixture was uniformly mixed. Here, the absolute value of the difference between the refractive index (A) of the polyorganosiloxane of formula H and the refractive index (B) of the polyorganosiloxane mixture of formulas I, J and K is 1.1.
[0182] [Formula H]
[0183] (ViMe 2 SiO 1 / 2 ) 2 (Me 2 SiO 2 / 2 ) 20 (Ph 2 SiO 2 / 2 ) 20
[0184] [Formula I]
[0185] (ViMe 2 SiO 1 / 2 )(Me 3 SiO 1 / 2 ) 3 (SiO 4 / 2 ) 2
[0186] [Formula J]
[0187] (ViMe 2 SiO 1 / 2 ) 2 (Me 2 SiO 2 / 2 ) 70
[0188] [Formula K]
[0189] (Me 3 SiO 1 / 2 ) 2 (HMeSiO 2 / 2 ) 35
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