Package seal composition for electronic device
A composition and mixture technology, applied in the direction of circuits, electrical components, electrical solid devices, etc., can solve the problem of high viscosity
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Embodiment 1
[0106] Preparation of benzamido-terminated dimer diamine bismaleimide
[0107]
[0108] In a 500 ml three-necked flask equipped with an addition funnel, magnetic stirrer, internal temperature probe and nitrogen input / output ports, diamine dimer (Versamine 552 sold by Henkel, 20.0 g, 37 mmol) was dissolved in Et 2 O (200ml). With vigorous stirring, NaOH was added aq (11.7 ml of 6.25M solution, dissolved in 100 ml of H 2 O dilution, 73 mmol). The solution was placed under a steady flow of nitrogen and cooled to 3°C with stirring on an ice bath. Add diethyl ether (Et 2 O) A solution (50 mL) of p-nitrobenzoyl chloride (13.6 g, 73 mmol) was added to the reaction over a period of 60 minutes, maintaining internal T aq (300ml), NaCl aq (250 mL) and distilled water (2 x 250 mL) to wash the isolated organic layer. Separate the organic phase with anhydrous MgSO 4 Drying, filtration and vacuum removal of the solvent gave a dinitro compound as a viscous yellow oil with...
Embodiment 2
[0112] Preparation of 20-bismaleimido-10,11
[0113] - Dioctyl-eicosane (and isomers)
[0114]
[0115] Maleic anhydride (98.06 g, 1.02 eq., NH 2 ) was dissolved in 500 ml tetrahydrofuran (THF). Start stirring and freeze the solution with a dry ice / water bath. Slow addition of 250 mL THF in dimerdiamine (Versamine 552, Henkel, 245.03 g, 0.4477 mmol) was started. Add within 1 hour. After the addition was complete, the ice bath was removed and the slow addition funnel was rinsed thoroughly with 375 mL of THF to incorporate into the solid diamine. After 1 hour, an ice bath was placed around the flask. 1-Hydroxybenzotriazole (96.79 g, 0.80 equivalents, as-NH 2 meter) was rinsed into the flask with 50 ml of THF. When the temperature reaches 5°C, start to slowly add dicyclohexylcarbodiimide (DCC) (188.43 g, 1.02 equiv. in -HN 2 count). During the addition, the temperature was kept below 10°C. After the addition of DCC was complete, the slow additio...
Embodiment 3
[0121] Preparation of butadiene-acrylonitrile bismaleimide
[0122]
[0123] In a 3-liter four-necked flask equipped with a funnel, mechanical stirrer, internal temperature probe, and nitrogen input / output ports, amino-terminated butadiene acrylonitrile (sold by BF Goodrich under the trade name Hycar resin 1300×42ATBN, where m and n in the structure are integers such that the number average molecular weight is 3600) (450 g, 500 mmol, based on amine equivalent weight AEW=450 g) dissolved in CHCl 3 (1000 ml). The stirred solution was placed under nitrogen and cooled on an ice bath. Add CHCl to the addition funnel 3 (50 mL) of maleic anhydride (98.1 g, 1 mol) and this solution was added to the reaction over 30 minutes, keeping the internal reaction temperature below 10°C. The mixture was stirred on an ice bath for 30 minutes, then allowed to warm to room temperature and stirred for an additional 4 hours. Acetic anhydride (Ac 2 O) (653.4 grams, 6 moles), triet...
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