Method of making branched polysilane copolymers
A technology for branched polysilane and copolymers, which is applied in the field of preparation of branched polysilane copolymers, and can solve problems such as difficulties, complicated polysilane chemical methods, and difficult preparation methods
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Embodiment 1
Embodiment 1-synthetic branched polysilane copolymer
Preparation of phenyl-methyl, diphenyl, methyl terpolymers
[0030] Toluene (4025 g) and sodium metal (163 g) were charged in a 6 liter cylindrical glass reaction vessel and then the toluene was refluxed through the jacket using a circulating bath. A slightly positive nitrogen atmosphere was maintained throughout the procedure. The molten sodium was then dispersed using an impeller with double pitched blades and the jacket temperature was maintained at 110°C. A mixture containing phenylmethyldichlorosilane (365 g), diphenyldichlorosilane (127 g) and methyltrichlorosilane (89.3 g) was then introduced over 60 minutes by means of a dropper just above the upper impeller to the reaction vessel, resulting in an exotherm to 113°C. After maintaining the reaction temperature for 16 hours, the contents were cooled to 40°C, after which methanol (455 g) was slowly added to oxidize the residual sodium. This slurry is then centrifuged...
Embodiment 2
Embodiment 2-synthetic branched polysilane copolymer
Preparation of phenyl-methyl, diphenyl, methyl terpolymers
[0031] Toluene (4025 g) and metallic sodium (163 g) were charged in a 6 liter cylindrical glass reaction vessel, and then the toluene was refluxed through the jacket using a circulating bath. A slightly positive nitrogen atmosphere was maintained throughout the procedure. The molten sodium was then dispersed using an impeller with double pitched blades and the jacket temperature was maintained at 110°C. Then, over 60 minutes, by means of a dropper positioned just above the upper impeller, a solution containing phenylmethyldichlorosilane (445 g), diphenyldichlorosilane (68.7 g) and methyltrichlorosilane (69.3 g) was introduced. The mixture was transferred to the reaction vessel, resulting in an exotherm to 113°C. After maintaining the reaction temperature for 2 hours, the contents were cooled to 40°C, after which methanol (453 g) was slowly added to oxidize the r...
Embodiment 3
Embodiment 3-synthetic branched chain polysilane copolymer
Preparation of phenyl-methyl, diphenyl, methyl terpolymers
[0032] Toluene (4308 g) and metallic sodium (121 g) were charged in a 6-liter cylindrical glass reaction vessel, and then the toluene was refluxed through the jacket using a circulating bath. A slightly positive nitrogen atmosphere was maintained throughout the procedure. The molten sodium was then dispersed using an impeller with double pitched blades and the jacket temperature was maintained at 110°C. A mixture containing phenylmethyldichlorosilane (295 g), diphenyldichlorosilane (102 g) and methyltrichlorosilane (50.9 g) was then introduced over 120 minutes by means of a dropper just above the upper impeller to the reaction vessel, resulting in an exotherm to 112°C. After maintaining the reaction temperature for 2 hours, the contents were cooled to 40°C, after which methanol (338 g) was slowly added to oxidize the residual sodium. This slurry was then ...
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Abstract
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