為能讓 貴審查委員能更瞭解本發明之技術內容，特舉較佳具體實施例說明如下。 請參閱『第１圖』所示，係本發明之製備流程示意圖。如圖所示：本發明係一種合成低介電常數、高玻璃轉移溫度（Glass Transition Temperature, Tg
）及有機溶劑溶解性佳之含金剛烷之聚醯亞胺之製備方法，其至少包含下列步驟： 步驟s11：將烷基取代鄰苯二酚（alkylcatechol）與鹵化金剛烷在有機溶劑中，並且將溫度範圍控制於60～140°C進行攪拌反應12～72小時，合成含金剛烷之二酚化合物； 步驟s12：在鹼性環境中，將該含金剛烷之二酚化合物與4-鹵化硝基苯於極性非質子溶液中，加熱迴流攪拌進行親核性取代反應12～24小時，合成含金剛烷之二硝基苯酚化合物； 步驟s13：藉由還原方式，將該含金剛烷之二硝基苯酚化合物還原成氨基，形成含金剛烷之二氨基苯酚單體；以及 步驟s14：利用該含金剛烷之二氨基苯酚單體完全溶解於高沸點溶劑（一步法）或極性非質子溶液（二步法）中，與二酸酐單體（包含或不含催化劑及/或脫水劑）於0～30°C下攪拌反應2.5～3.5小時後，放置於油浴在2.5～3.5小時內從80～120°C加熱至160～240°C，維持160～240°C再另外以8～12小時進行脫水閉環反應，最後合成出含金剛烷之聚醯亞胺。如是，藉由上述揭露之流程構成一全新之含金剛烷之聚醯亞胺之製備方法。 為了顯示本發明所合成之聚醯亞胺具有低介電常數、高Tg
及有機溶劑可溶性佳，因此利用下面評價項目與方法呈現。 1. 有機溶劑溶解度測試 以1g/dL之濃度分別在室溫及100°C下觀察聚合物之溶解情形，以瞭解該聚合物之耐溶劑性或加工溶劑之種類。所使用有機溶劑包括：N-甲基吡咯烷酮（N-Methyl-2-Pyrrolidone, NMP）、二甲基乙醯胺（N,N-dimethylacetamide, DMAc）、鄰氯苯酚（o-chlorophenol, o-CP）、間甲酚（m-cresol）、氯仿（CHCl3
）及四氫呋喃（Tetrahydrofuran, THF）等。 2. 黏度測試 將聚合物量秤0.05g溶於10ml 測試溶液中，待完全溶解導入黏度管中於30°C恒溫水槽測試溶液流動時間，並與空白實驗進行比較，計算該聚合物之固有黏度值。公式如下： ηinh
= ln (t/t0
)/C 其中，t係含聚合物之溶液流經毛細管所需時間，t0
係純測試溶液流經毛細管所需時間，以及C係聚合物溶液之濃度，為0.5g/dL。 3. 耐熱性測試 耐熱性通過玻璃轉移溫度（Tg
）及熱分解溫度（Thermal Degradation Temperature, Td
）進行評價。玻璃轉移溫度分別藉由動態力學分析儀（TA instrument-DMA Q800）與示差掃描熱分析儀（Perkin-Elmer DSC 7），DMA以升溫速率為5°C/min、頻率1Hz之條件下進行測定，並以損失模數（loss modulus）之最大峰值作為玻璃轉移溫度，而DSC則以升溫速率為20°C/min且以第二次掃描時Cp值改變之溫度當作玻璃轉移溫度。 另外，熱分解溫度係將所得到之聚合物採用TG/DTA測定儀器（TA instrument-TGA Q500），分別在空氣及氮氣環境下，以升溫度為10°C/min之條件進行測定，並將重量減少10%時之溫度作為熱分解溫度。 4. 介電常數 利用真空濺鍍之方式在薄膜兩側鍍上均勻金屬-金形成電極，藉由TA儀器-DEA 2970量測介電常數，測量環境控制在25°C、1kHz、且相對溼度為0%下進行。 5. 吸溼性測試 量測烘乾聚合物重（W1
）後，放置於25°C水浴且持續100小時後，擦拭表面水分後量測聚合物重（W2
），利用吸溼前後重量差之百分率。如下所示： (W2
-W1
)/W1
*100% [實施例1] 合成3-(1-adamantyl)-5-methylcatechol 在150毫升反應瓶內添加15克（120毫莫耳）4-甲基鄰苯二酚（4-methylcatechol）、25克（116毫莫耳）1-溴金剛烷（1-bromoadamantane）及25毫升苯，加熱攪拌迴流反應72小時。反應完後，進行純化分離收集到米白色固體粉末，烘乾後得粗產物重24.1克（熔點為194～198°C，產率為80.5%），進一步純化固體得到米白色透明針狀物重18.8克，其產率為78%且熔點為200～202°C。 [實施例2] 合成3-(1-adamantyl)-5-tert butylcatechol 如實施例1之步驟合成含金剛烷之二酚化合物，然而4-methylcatechol改為4-(第三丁基)鄰苯二酚（4-tert butylcatechol）得粗產物重27.5克（熔點為205～208°C，產率為85.7%）。進一步純化得到透明針狀物重20.1克，其產率為73.1%且熔點為214～216°C。 [實施例3] 合成3-(1-adamantyl)-5-methyl-1,2-bis(4-nitrophenyoxy)benzene 於反應器內加入2.63克（10.2毫莫耳）3-(1-adamantyl)-5-methylcatechol溶解於50毫升二甲基甲醯胺（Dimethylformamide, DMF）溶劑。隨後，將3.09克（22.4毫莫耳）碳酸鉀與3.55克（22.5毫莫耳）4-硝基氯苯（4-chloronitrobenzene）加入上述之DMF溶液中，混合後加熱攪拌迴流反應12小時。反應結束後，經溶劑析出、水洗烘乾後得粗產物重4.7克（熔點為236～239°C，產率為94%）。之後，將粉體進一步純化得黃色粉末重2.9克，其產率為61%且熔點為242～244°C。 [實施例4] 合成3-(1-adamantyl)-5-methyl-1,2-bis(4-nitrophenyoxy)benzene 如實施例3之步驟合成含金剛烷之二硝基苯酚化合物，然而DMF溶劑改為二甲亞碸（Dimethyl Sulfoxide, DMSO）溶劑，經水洗、烘乾後得粗產物重3.9克(熔點為236～239°C，產率為78%)。之後，將粉體進一步純化得黃色粉末重1.95克，其產率為50%且熔點為242～244°C。 [實施例5] 合成3-(1-adamantyl)-5-tert butyl-1,2-bis(4-nitrophenyoxy)benzene 如實施例3之步驟合成含金剛烷之二硝基苯酚化合物，然而3-(1-adamantyl)-5-methylcatechol改為3-(1-adamantyl)-5-tert butylcatechol。經水洗、烘乾後得淡黃色粉體粗產物重23克(熔點為208～211°C，產率為86.5%)。之後，經進一步純化得淡黃色粉末重19.9克，其產率為75%且熔點為209～211°C。 [實施例6] 合成3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene 加入6.02克（12.0毫莫耳）3-(1-adamantyl)-5-methyl-1,2-bis(4-nitrophenyoxy)benzene、0.6克10%鈀碳（Pd/C）、80毫升乙醇及50毫升THF於三頸反應器中，並加熱至90°C，隨後緩緩滴加60毫升聯胺（NH2
NH2
.H2
O）。反應完後，過濾移除觸媒Pd/C，經冷卻、濃縮溶液部分析出米白色粉末，過濾後用水清洗數次烘乾後得粗產物重3.63克（熔點為233～235°C，產率為68%）。將粉末進一步純化得透明針狀粉末重3.14克，其產率為86.7%且熔點為234～236°C。 [實施例7] 合成3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene 如實施例6之步驟合成含金剛烷之二氨基苯酚單體，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-nitrophenyoxy)benzene改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-nitrophenyoxy)benzene當作反應物。經水洗、烘乾後粗產物重7.11克（熔點為200～202°C，產率為80%）。將粉末進一步純化得透明晶體重5.46克，其產率為86.7%且熔點為201～203°C。 [實施例8] 合成3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene 將3克觸媒-Engelhard Ni-3288以氫氣還原後，加入5.0克（10毫莫耳）3-(1-adamantyl)-5-tert butyl-1,2-bis(4-nitrophenyoxy)benzene溶解於溶劑中，並倒入壓力鍋內。之後，以氫氣減壓100～200psig、溫度設定60～200°C機械攪拌進行硝基還原成氨基反應3～5小時。反應完後，移除觸媒及溶劑得白色產物重4.1克，其熔點為201～203°C且產率為92.1%。 [實施例9] 合成聚醯亞胺 將0.909克（2.066毫莫耳）3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene在25毫升反應器完全溶解於6毫升m-cresol（包含2%異喹啉(isoquinoline)）溶劑。隨後，加入0.6074克（2.066mmol）3,3',4,4'-聯苯四羧酸二酸酐（3,3',4,4'-Biphenyltetracarboylic dianhydride, BPDA）溶於該二胺溶液中。在30°C下攪拌反應3小時後，放置於油浴在3小時內加熱至200°C，並且維持在200°C放置另外10小時。反應完將溶液冷卻後，倒入甲醇會析出沉澱物，收集、清洗、及乾燥後獲得聚醯亞胺。該聚醯亞胺高分子之本質黏度為1.02dl/g且可溶於NMP、o-chlorophenol、m-cresol及CHCl3
等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為314°C與308°C。 [實施例10] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而m-cresol及isoquinoline分別改為6毫升NMP及1.5毫升o-xylene。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.86dl/g。 [實施例11] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而BPDA改為均苯四甲酸二酸酐（Pyromellitic dianhydride, PMDA）。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.87dl/g且可溶於o-chlorophenol與m-cresol等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為363°C與367°C。 [實施例12] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而BPDA改為3,3',4,4'-二苯甲酮四甲酸二酸酐（3,3',4,4'-benzophenone tetracarboxylic dianhydride, BTDA） 。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.65dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol及CHCl3
等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為300°C與306°C。 [實施例13] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而BPDA改為4,4'-氧雙鄰苯二甲酸酐（4,4'-oxydiphthalic dianhydride, ODPA）。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.72dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為292°C與288°C。 [實施例14] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而BPDA改為4,4'-(六氟異丙烯)二酞酸酐（4,4'-hexafluoroisoprorylidene-diphthalic anhydride, 6FDA）。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.72dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為300°C與296°C。 [實施例15] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而BPDA改為1,4,5,8-萘四甲酸酐（1,4,5,8-Naphthalene-tetracarboxylic dianhydride, NTDA）。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.87dl/g且可溶於NMP、o-chlorophenol、m-cresol及CHCl3
等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為417°C與411°C。 [實施例16] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.69dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為310°C與299°C。 [實施例17] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene與m-cresol/isoquinoline分別改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene與NMP/o-xylene。反應後，乾燥獲得之聚醯亞胺本質黏度為0.53dl/g。 [實施例18] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene與BPDA分別改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene與BTDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.84dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol及CHCl3
等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為298°C與295°C。 [實施例19] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene與BPDA分別改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene與ODPA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.50dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為288°C與285°C。 [實施例20] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene與BPDA分別改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene與6FDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.62dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為297°C與293°C。 [實施例21] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而3-(1-adamantyl)-5-methyl-1,2-bis(4-aminophenyoxy)benzene與BPDA分別改為3-(1-adamantyl)-5-tert butyl-1,2-bis(4-aminophenyoxy)benzene與NTDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.56dl/g且可溶於NMP、DMAc、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑。藉由DSC與DMA測得之玻璃轉移溫度分別為400°C與399°C。 [比較例1] 合成1,2-bis(4-aminophenoxy)benzene 如實施例3之步驟合成二硝基苯酚單體，然而3-(1-adamantyl)-5-methylcatechol改為鄰苯二酚。經水洗、烘乾後得粗產物，將粉末進一步純化得1,2-bis(4-nitrophenoxy)benzene粉末，其產率為47.7%且熔點為134～136°C。隨後，如實施例6之步驟合成二氨基苯酚單體進行反應。經水洗、烘乾後得粗產物，進行一步純化得透明晶體1,2-bis(4-aminophenoxy)benzene，其產率為87.3%且熔點為136～138°C。 [比較例2] 合成4-tert butyl-1,2-bis(4-aminophenoxy)benzene 如比較例1之步驟合成二硝基苯酚單體，然而鄰苯二酚改為4-tert butylcatechol。可分別得4-tert butyl-1,2-bis(4-nitrophenoxy)benzene粉末，其產率為54.0%且熔點為147～149°C，及透明晶體4-tert butyl-1,2-bis (4-aminophenoxy) benzene，其產率為86.0%且熔點為129～131°C。 [比較例3] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例1與BPDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為膨潤狀態（濃硫酸(H2
SO4
)，0.5g/dL於30°C測量），且可溶於NMP及m-cresol等有機溶劑。藉由DSC測得之玻璃轉移溫度為246°C。 [比較例4] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例1與PMDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為1.28dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且不可溶於任何測試之有機溶劑。藉由DSC測試無發現明顯之玻璃轉移溫度。 [比較例5] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例1與BTDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.67dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且於100°C下部分可溶於NMP與m-cresol等有機溶劑。藉由DSC測得之玻璃轉移溫度為235°C。 [比較例6] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例1與ODPA。反應完乾燥後，獲得之聚醯亞胺本質黏度為1.00dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且不可溶於任何測試之有機溶劑。藉由DSC測得之玻璃轉移溫度為222°C。 [比較例7] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例1與6FDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為1.33dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且可溶於NMP、DMAc、m-cresol及THF等有機溶劑。藉由DSC測得之玻璃轉移溫度為250°C。 [比較例8] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例2與BPDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.65dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且可溶於NMP、DMAc、m-cresol及THF等有機溶劑。藉由DSC測得之玻璃轉移溫度為251°C。 [比較例9] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例2與PMDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.87dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且不可溶於任何測試之有機溶劑。藉由DSC測得之玻璃轉移溫度為260°C。 [比較例10] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例2與BTDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.78dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且於100°C下部分可溶於NMP、DMAc及THF等有機溶劑。藉由DSC測得之玻璃轉移溫度為239°C。 [比較例11] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例2與ODPA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.83dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且可溶於NMP、DMAc、m-cresol及THF等有機溶劑。藉由DSC測得之玻璃轉移溫度為229°C。 [比較例12] 合成聚醯亞胺 如實施例9之步驟合成聚醯亞胺，然而二胺與二酸酐單體分別改為比較例2與6FDA。反應完乾燥後，獲得之聚醯亞胺本質黏度為0.46dl/g（濃H2
SO4
， 0.5g/dL於30°C測量），且可溶於NMP、DMAc、m-cresol及THF等有機溶劑。藉由DSC測得之玻璃轉移溫度為242°C。 下列表一～表四將分別表示本發明之新型含金剛烷二胺單體分別與一系列二酸酐所合成之聚醯亞胺本質黏度、吸濕率及有機溶劑溶解度測試；分別以比較例2、3與該一系列二酸酐所合成之聚醯亞胺本質黏度及有機溶劑溶解度測試；本發明所合成之一系列含金剛烷聚醯亞胺之耐熱及電氣性質測試；以及分別以比較例2、3與該一系列二酸酐所合成聚醯亞胺之高玻璃轉移溫度（Tg
）。 表一表一所示++、+、+-及-表示溶解度，其中++表示溶於室溫，+表示溶於100°C下，+-表示部分溶於100°C下，以及-表示不可溶解。 表二表二中b表示膨潤。 表三表四從表一～表四可明確得知，本發明提供新型含金剛烷二胺單體(1)與芳香二酸酐可成功地合成一系列聚醯亞胺，並且具備有機溶劑可溶性佳 、低介電常數及高Tg
等性質。表一得知由新型含金剛烷二胺與二酸酐所合成之聚醯亞胺之本質黏度值介於0.50～1.02 dl/g，說明該一系列高分子具有較高之分子量。同時，該高分子幾乎皆可溶於NMP、DMAc 、o-chlorophenol、m-cresol、CHCl3
及THF等有機溶劑，有助於後續加工性。從表一及表二可發現於側鏈引入較大自由體積且剛性之烷基與金剛烷結構，可破壞聚合物之規整性、減少分子鏈堆積密度、及增大分子間距離有助於小分子溶劑滲入，因此改善該高分子溶解性。以上述比較例5、10及實施例18為例，可清楚地發現此現象。若NMP當作溶劑為例，該高分子可以溶劑鑄成具堅硬（抗張強度＞72 MPa）與可撓曲性之薄膜。同時，它們分別具有最低可達0.35%及2.75（1kHz）之低吸溼性及低介電常數。藉由表三與表四可知，以新型含金剛烷二胺與二酸酐所合成之一系列聚醯亞胺擁有優越的耐熱性質，其Tg
溫度範圍介於288～417°C且10%熱重損失溫度至少皆大於470°C以上。相於比較例3～12而言，導入金剛烷結構於聚醯亞胺中，明顯地可提高Tg
至少50°C以上，表示金剛烷結構有助於提升高分子耐熱性質。因此，本發明提供新型含金剛烷二胺與二酸酐所衍生之聚醯亞胺擁有高Tg
、低介電常數及有機溶劑可溶性佳等特性，將有潛力運用至工業上結構性材料、集成電路之絕緣器及軟性電子基板等方面。 綜上所述，本發明係一種含金剛烷之聚醯亞胺之製備方法，可有效改善習用之種種缺點，係提供新型含金剛烷二胺與二酸酐所衍生之聚醯亞胺擁有高玻璃轉移溫度（Tg
）、低介電常數及有機溶劑可溶性佳等特性，將有潛力運用至工業上結構性材料、集成電路之絕緣器及軟性電子基板等方面，進而使本發明之産生能更進步、更實用、更符合使用者之所須，確已符合發明專利申請之要件，爰依法提出專利申請。 惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍；故，凡依本發明申請專利範圍及發明說明書內容所作之簡單的等效變化與修飾，皆應仍屬本發明專利涵蓋之範圍內。In order to make your reviewing committee better understand the technical content of the present invention, the preferred specific embodiments are described below. Please refer to "Figure 1", which is a schematic diagram of the preparation process of the present invention. As shown in the figure, the present invention is a method for synthesizing adamantane-containing polyimide with low dielectric constant, high glass transition temperature ( Tg ) and good organic solvent solubility. The method includes at least the following steps. : Step s11: Mixing alkyl-substituted catechol with halogenated adamantane in an organic solvent and controlling the temperature range at 60-140 ° C for 12-72 hours to synthesize adamantane-containing diphenol Compound; step s12: in a basic environment, the adamantane-containing bisphenol compound and 4-halogenated nitrobenzene in a polar aprotic solution, heated under reflux and stirred for a nucleophilic substitution reaction for 12 to 24 hours, to synthesize Adamantane dinitrophenol compound; step s13: reducing the adamantane-containing dinitrophenol compound to an amino group by a reduction method to form an adamantane-containing diaminophenol monomer; and step s14: using the The diaminophenol monomer of adamantane is completely dissolved in a high boiling point solvent (one-step method) or a polar aprotic solution (two-step method), and the diacid anhydride monomer (with or without catalyst) Agent and / or dehydrating agent) at 0-30 ° C for 2.5-3.5 hours, and then placed in an oil bath and heated from 80-120 ° C to 160-240 ° C in 2.5-3.5 hours, maintaining 160-240 ° C and then another 8 to 12 hours for dehydration and ring-closing reaction, and finally polyammonium-containing polyammonium is synthesized. If so, a new method for the preparation of aramidane-containing polyimide is formed by the above-disclosed process. In order to show that the polyfluorene imide synthesized by the present invention has low dielectric constant, high T g, and good solubility in organic solvents, the following evaluation items and methods are used. 1. Solubility test of organic solvent Observe the solubility of the polymer or the type of processing solvent at a concentration of 1g / dL at room temperature and 100 ° C, respectively. Organic solvents used include: N-Methyl-2-Pyrrolidone (NMP), N, N-dimethylacetamide (DMAc), o-chlorophenol, o-CP ), M-cresol, chloroform (CHCl 3 ), and tetrahydrofuran (Tetrahydrofuran, THF). 2. Viscosity test: Dissolve 0.05g of polymer scale in 10ml test solution, and completely dissolve it and introduce it into a viscosity tube. Test the flow time of the solution at a constant temperature water bath at 30 ° C and compare it with the blank experiment to calculate the inherent viscosity of the polymer. . The formula is as follows: η inh = ln (t / t 0 ) / C where t is the time required for the polymer-containing solution to flow through the capillary, t 0 is the time required for the pure test solution to flow through the capillary, and the C-based polymer solution The concentration was 0.5 g / dL. 3. Heat resistance test The heat resistance is evaluated by the glass transition temperature (T g ) and the thermal decomposition temperature (Thermal Degradation Temperature, T d ). The glass transition temperature was measured by a dynamic mechanical analyzer (TA instrument-DMA Q800) and a differential scanning thermal analyzer (Perkin-Elmer DSC 7). DMA was measured at a temperature increase rate of 5 ° C / min and a frequency of 1 Hz. The maximum peak value of the loss modulus is taken as the glass transition temperature, and DSC is taken as the glass transition temperature with the temperature rising rate of 20 ° C / min and the change in the Cp value during the second scan. In addition, the thermal decomposition temperature was measured by using a TG / DTA measuring instrument (TA instrument-TGA Q500) in an air and nitrogen environment at a temperature of 10 ° C / min. The temperature at which the weight was reduced by 10% was taken as the thermal decomposition temperature. 4. The dielectric constant is formed by plating a uniform metal-gold electrode on both sides of the film by vacuum sputtering. The dielectric constant is measured by TA instrument-DEA 2970. The measurement environment is controlled at 25 ° C, 1kHz, and relative humidity. Performed at 0%. 5. After measuring the weight of the polymer (W 1 ) after drying, place it in a 25 ° C water bath for 100 hours, and then measure the weight of the polymer (W 2 ) after wiping the surface moisture. Use the weight before and after moisture absorption. Percentage of difference. It is as follows: (W 2 -W 1 ) / W 1 * 100% [Example 1] Synthesis of 3- (1-adamantyl) -5-methylcatechol 15 g (120 mmol) was added to a 150 ml reaction flask 4 -4-methylcatechol, 25 g (116 mmol) of 1-bromoadamantane and 25 ml of benzene, and the reaction was heated under reflux for 72 hours. After the reaction, the off-white solid powder was collected by purification and separation. After drying, the crude product weighed 24.1 g (melting point 194-198 ° C, yield 80.5%). The solid was further purified to obtain off-white transparent needles. 18.8 g, its yield is 78% and its melting point is 200-202 ° C. [Example 2] Synthesis of 3- (1-adamantyl) -5-tert butylcatechol The diphenol compound containing adamantane was synthesized as in the procedure of Example 1, but 4-methylcatechol was changed to 4- (third butyl) phthalate The crude product of phenol (4-tert butylcatechol) weighed 27.5 g (melting point: 205-208 ° C, yield: 85.7%). Further purification yielded transparent needles weighing 20.1 grams, with a yield of 73.1% and a melting point of 214-216 ° C. [Example 3] Synthesis of 3- (1-adamantyl) -5-methyl-1,2-bis (4-nitrophenyoxy) benzene Into a reactor, 2.63 g (10.2 mmol) of 3- (1-adamantyl)- 5-methylcatechol is dissolved in 50 ml of Dimethylformamide (DMF) solvent. Subsequently, 3.09 g (22.4 mmol) of potassium carbonate and 3.55 g (22.5 mmol) of 4-chloronitrobenzene (4-chloronitrobenzene) were added to the above DMF solution, and the mixture was heated and stirred under reflux for 12 hours. After the reaction was completed, the solvent was precipitated, washed with water, and dried to obtain a crude product weighing 4.7 g (melting point: 236-239 ° C, yield: 94%). Thereafter, the powder was further purified to obtain a yellow powder weighing 2.9 g, with a yield of 61% and a melting point of 242 to 244 ° C. [Example 4] Synthesis of 3- (1-adamantyl) -5-methyl-1,2-bis (4-nitrophenyoxy) benzene The dinitrophenol compound containing adamantane was synthesized as in the procedure of Example 3. However, the DMF solvent was modified. Dimethyl Sulfoxide (DMSO) solvent, washed with water and dried to obtain a crude product weighing 3.9 g (melting point: 236 ~ 239 ° C, yield: 78%). After that, the powder was further purified to obtain a yellow powder weighing 1.95 g, with a yield of 50% and a melting point of 242-244 ° C. [Example 5] Synthesis of 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-nitrophenyoxy) benzene The dinitrophenol compound containing adamantane was synthesized as in the procedure of Example 3, but 3- (1-adamantyl) -5-methylcatechol was changed to 3- (1-adamantyl) -5-tert butylcatechol. After washing with water and drying, the crude product was obtained as a light yellow powder weighing 23 g (melting point: 208-211 ° C, yield: 86.5%). After that, it was further purified to obtain a light yellow powder weighing 19.9 g, with a yield of 75% and a melting point of 209 to 211 ° C. [Example 6] Synthesis of 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene Add 6.02 g (12.0 mmol) of 3- (1-adamantyl) -5-methyl- 1,2-bis (4-nitrophenyoxy) benzene, 0.6 g of 10% palladium on carbon (Pd / C), 80 ml of ethanol and 50 ml of THF in a three-necked reactor, heated to 90 ° C, and then slowly added dropwise 60 ml of hydrazine (NH 2 NH 2 .H 2 O). After the reaction, the catalyst Pd / C was removed by filtration, and the off-white powder was analyzed after cooling and concentrating the solution. After filtering, washing with water several times and drying, the crude product weighed 3.63 g (melting point 233-235 ° C, product (68%). The powder was further purified to obtain a transparent needle-like powder weighing 3.14 grams, with a yield of 86.7% and a melting point of 234-236 ° C. [Example 7] Synthesis of 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene The diaminophenol monomer containing adamantane was synthesized as in the procedure of Example 6, but 3- (1-adamantyl) -5-methyl-1,2-bis (4-nitrophenyoxy) benzene was changed to 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-nitrophenyoxy) benzene as a reaction Thing. After washing with water and drying, the crude product weighed 7.11 grams (melting point 200-202 ° C, yield 80%). The powder was further purified to obtain 5.46 g of transparent crystals with a yield of 86.7% and a melting point of 201-203 ° C. [Example 8] Synthesis of 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene After reducing 3 g of catalyst-Engelhard Ni-3288 with hydrogen, 5.0 g (10 Millimolar) 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-nitrophenyoxy) benzene is dissolved in a solvent and poured into a pressure cooker. Thereafter, the pressure is reduced by 100 to 200 psig with hydrogen, and the temperature is set to 60 to 200 ° C, and the nitro group is reduced to an amino group for 3 to 5 hours with mechanical stirring. After the reaction was completed, the catalyst and the solvent were removed to obtain 4.1 g of a white product with a melting point of 201-203 ° C and a yield of 92.1%. [Example 9] Synthesis of polyfluorene imine 0.909 g (2.066 mmol) of 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene was completely dissolved in a 25 ml reactor 6 ml of m-cresol (containing 2% isoquinoline) solvent. Subsequently, 0.6074 g (2.066 mmol) of 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride (3,3', 4,4'-Biphenyltetracarboylic dianhydride, BPDA) was added to dissolve the diamine solution. After stirring the reaction at 30 ° C for 3 hours, it was placed in an oil bath and heated to 200 ° C within 3 hours, and maintained at 200 ° C for another 10 hours. After the reaction is completed, the solution is cooled, and the methanol is poured into the precipitate, which is collected, washed, and dried to obtain polyimide. The polyfluorene imine polymer has an intrinsic viscosity of 1.02 dl / g and is soluble in organic solvents such as NMP, o-chlorophenol, m-cresol, and CHCl 3 . The glass transition temperatures measured by DSC and DMA were 314 ° C and 308 ° C, respectively. [Example 10] Synthesis of polyimide Polyimide was synthesized according to the procedure of Example 9. However, m-cresol and isoquinoline were changed to 6 ml of NMP and 1.5 ml of o-xylene, respectively. After the reaction was dried, the obtained polyimide had an intrinsic viscosity of 0.86 dl / g. [Example 11] Synthesis of polyfluorene imine The method of Example 9 was used to synthesize polyfluorene imine, but BPDA was changed to pyromellitic dianhydride (PMDA). After the reaction was dried, the obtained polyimide had an intrinsic viscosity of 0.87 dl / g and was soluble in organic solvents such as o-chlorophenol and m-cresol. The glass transition temperatures measured by DSC and DMA were 363 ° C and 367 ° C, respectively. [Example 12] Synthesis of polyfluorene imine The procedure of Example 9 was used to synthesize polyimide, but BPDA was changed to 3,3 ', 4,4'-benzophenonetetracarboxylic dianhydride (3,3', 4,4'-benzophenone tetracarboxylic dianhydride (BTDA). After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.65 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, and CHCl 3 . The glass transition temperatures measured by DSC and DMA were 300 ° C and 306 ° C, respectively. [Example 13] Synthesis of polyfluorene imine The method of Example 9 was used to synthesize polyfluorene imine, but BPDA was changed to 4,4'-oxydiphthalic dianhydride (ODPA). After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.72 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 292 ° C and 288 ° C, respectively. [Example 14] Synthesis of polyfluorene imine The procedure of Example 9 was used to synthesize polyfluorene imine, but BPDA was changed to 4,4 '-(hexafluoroisopropene) diphthalic anhydride , 6FDA). After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.72 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 300 ° C and 296 ° C, respectively. [Example 15] Synthesis of polyfluorene imine The procedure of Example 9 was used to synthesize polyfluorene imine, but BPDA was changed to 1,4,5,8-naphthalene-tetracarboxylic anhydride (1,4,5,8-Naphthalene-tetracarboxylic dianhydride, NTDA). After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.87 dl / g and is soluble in organic solvents such as NMP, o-chlorophenol, m-cresol, and CHCl 3 . The glass transition temperatures measured by DSC and DMA were 417 ° C and 411 ° C, respectively. [Example 16] Synthesis of polyfluorene imine The polyfluorene was synthesized in the same manner as in Example 9, except that 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene was changed to 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene. After the reaction was dried, the obtained polyimide had an intrinsic viscosity of 0.69 dl / g and was soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 310 ° C and 299 ° C, respectively. [Example 17] Synthesis of polyfluorene imine The polyfluorene was synthesized in the same manner as in Example 9. However, 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene and m-cresol / isoquinoline was changed to 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene and NMP / o-xylene, respectively. After the reaction, the intrinsic viscosity of the polyimide obtained by drying was 0.53 dl / g. [Example 18] Synthesis of polyfluorene imine The procedure described in Example 9 was used to synthesize polyfluorene imine, but 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene was modified separately from BPDA. It is 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene and BTDA. After the reaction was dried, the obtained polyimide had an intrinsic viscosity of 0.84 dl / g and was soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, and CHCl 3 . The glass transition temperatures measured by DSC and DMA were 298 ° C and 295 ° C, respectively. [Example 19] Synthesis of polyfluorene imine The polyfluorene was synthesized in the same manner as in Example 9. However, 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene and BPDA were modified separately. It is 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene and ODPA. After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.50 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 288 ° C and 285 ° C, respectively. [Example 20] Synthesis of polyfluorene imine The polyfluorene was synthesized in the same manner as in Example 9. However, 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene and BPDA were modified separately. It is 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene and 6FDA. After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.62 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 297 ° C and 293 ° C, respectively. [Example 21] Synthesis of polyfluorene imine The procedure of Example 9 was used to synthesize polyfluorene imine, but 3- (1-adamantyl) -5-methyl-1,2-bis (4-aminophenyoxy) benzene was modified separately from BPDA. It is 3- (1-adamantyl) -5-tert butyl-1,2-bis (4-aminophenyoxy) benzene and NTDA. After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.56 dl / g and is soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF. The glass transition temperatures measured by DSC and DMA were 400 ° C and 399 ° C, respectively. [Comparative Example 1] Synthesis of 1,2-bis (4-aminophenoxy) benzene A dinitrophenol monomer was synthesized as in the procedure of Example 3, but 3- (1-adamantyl) -5-methylcatechol was changed to catechol. The crude product was obtained after washing with water and drying, and the powder was further purified to obtain 1,2-bis (4-nitrophenoxy) benzene powder with a yield of 47.7% and a melting point of 134-136 ° C. Subsequently, the diaminophenol monomer was synthesized and reacted according to the procedure of Example 6. The crude product was obtained after washing and drying in water, and was purified in one step to obtain transparent crystals of 1,2-bis (4-aminophenoxy) benzene with a yield of 87.3% and a melting point of 136-138 ° C. [Comparative Example 2] Synthesis of 4-tert butyl-1,2-bis (4-aminophenoxy) benzene A dinitrophenol monomer was synthesized as in the procedure of Comparative Example 1, but catechol was changed to 4-tert butylcatechol. 4-tert butyl-1,2-bis (4-nitrophenoxy) benzene powder can be obtained, the yield is 54.0%, the melting point is 147 ～ 149 ° C, and the transparent crystal 4-tert butyl-1,2-bis ( 4-aminophenoxy) benzene, with a yield of 86.0% and a melting point of 129 to 131 ° C. [Comparative Example 3] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 1 and BPDA, respectively. After the reaction is dried, the intrinsic viscosity of the obtained polyimide is in a swollen state (concentrated sulfuric acid (H 2 SO 4 ), 0.5 g / dL measured at 30 ° C), and it is soluble in organic solvents such as NMP and m-cresol. The glass transition temperature measured by DSC was 246 ° C. [Comparative Example 4] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 1 and PMDA, respectively. After the reaction was dried, the intrinsic viscosity of the obtained polyimide was 1.28 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and it was insoluble in any tested organic solvents. No significant glass transition temperature was found by DSC test. [Comparative Example 5] Synthesis of polyfluorene imine The polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 1 and BTDA, respectively. After the reaction was dried, the intrinsic viscosity of the obtained polyimide was 0.67 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and it was partially soluble in NMP and m- at 100 ° C. cresol and other organic solvents. The glass transition temperature measured by DSC was 235 ° C. [Comparative Example 6] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 1 and ODPA, respectively. After the reaction is dried, the intrinsic viscosity of the obtained polyimide is 1.00 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and it is insoluble in any tested organic solvents. The glass transition temperature measured by DSC was 222 ° C. [Comparative Example 7] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9, but the diamine and dianhydride monomers were changed to Comparative Examples 1 and 6FDA, respectively. After the reaction was dried, the intrinsic viscosity of the polyimide obtained was 1.33 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and it was soluble in NMP, DMAc, m-cresol, and THF. Organic solvents. The glass transition temperature measured by DSC was 250 ° C. [Comparative Example 8] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 2 and BPDA, respectively. After the reaction is dried, the intrinsic viscosity of the obtained polyimide is 0.65 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and it is soluble in NMP, DMAc, m-cresol, THF, etc. Organic solvents. The glass transition temperature measured by DSC was 251 ° C. [Comparative Example 9] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Example 2 and PMDA, respectively. After the reaction was dried, the obtained polyimide had an intrinsic viscosity of 0.87 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and was insoluble in any organic solvents tested. The glass transition temperature measured by DSC was 260 ° C. [Comparative Example 10] Synthesis of polyfluorene imine The procedure described in Example 9 was used to synthesize polyfluorene imine, but the diamine and dianhydride monomers were changed to Comparative Example 2 and BTDA, respectively. After the reaction was dried, the intrinsic viscosity of the obtained polyimide was 0.78 dl / g (concentrated H 2 SO 4 , 0.5 g / dL was measured at 30 ° C), and it was partially soluble at 100 ° C in NMP, DMAc and Organic solvents such as THF. The glass transition temperature measured by DSC was 239 ° C. [Comparative Example 11] Synthesis of polyfluorene imine The procedure of Example 9 was used to synthesize polyfluorene imine, but the diamine and dianhydride monomers were changed to Comparative Example 2 and ODPA, respectively. After the reaction is dried, the intrinsic viscosity of the obtained polyimide is 0.83dl / g (concentrated H 2 SO 4 , 0.5g / dL measured at 30 ° C), and it is soluble in NMP, DMAc, m-cresol, THF, etc. Organic solvents. The glass transition temperature measured by DSC was 229 ° C. [Comparative Example 12] Synthesis of polyfluorene imine A polyfluorene was synthesized in the same manner as in Example 9. However, the diamine and dianhydride monomers were changed to Comparative Examples 2 and 6FDA, respectively. After the reaction is dried, the obtained polyimide has an intrinsic viscosity of 0.46 dl / g (concentrated H 2 SO 4 , 0.5 g / dL measured at 30 ° C), and is soluble in NMP, DMAc, m-cresol, and THF. Organic solvents. The glass transition temperature measured by DSC was 242 ° C. The following Tables 1 to 4 respectively show the intrinsic viscosity, hygroscopicity, and solubility of organic solvents of the polyimide synthesized by the novel adamantane-containing diamine monomer of the present invention and a series of diacid anhydrides; respectively, Comparative Example 2 , 3 and the series of dianimide synthesized polyfluorene imide intrinsic viscosity and organic solvent solubility test; a series of adamantane-containing polyfluorene imide synthesized in the present invention were tested for heat resistance and electrical properties; and Comparative Example 2 respectively High glass transition temperature (T g ) of polyfluorene imide synthesized by, 3, and the series of dianhydrides. Table I Table 1 shows the solubility of ++, +, +-and-, where ++ means soluble at room temperature, + means soluble at 100 ° C, +-means partially soluble at 100 ° C, and-means insoluble . Table II In Table 2, b indicates swelling. Table three Table four It is clear from Tables 1 to 4 that the present invention provides a novel adamantane diamine-containing monomer (1) and aromatic dianhydride, which can successfully synthesize a series of polyimide, and has good solubility in organic solvents and low dielectric. Constant and high T g properties. Table 1 shows that the intrinsic viscosity of polyimide synthesized from a novel amantadine-containing diamine and dianhydride ranges from 0.50 to 1.02 dl / g, indicating that the series of polymers has a relatively high molecular weight. At the same time, the polymer is almost all soluble in organic solvents such as NMP, DMAc, o-chlorophenol, m-cresol, CHCl 3 and THF, which is helpful for subsequent processability. It can be found from Tables 1 and 2 that the introduction of larger free volume and rigid alkyl and adamantane structures in the side chain can destroy the regularity of the polymer, reduce the molecular chain packing density, and increase the intermolecular distance. The molecular solvent penetrates, thereby improving the solubility of the polymer. Taking Comparative Examples 5, 10 and Example 18 as examples, this phenomenon can be clearly found. If NMP is used as a solvent as an example, the polymer can be solvent-casted into a film that is rigid (tensile strength> 72 MPa) and flexible. At the same time, they have low hygroscopicity and low dielectric constant up to 0.35% and 2.75 (1kHz), respectively. As can be seen from Tables 3 and 4, one of the series of polyfluorene imines synthesized by the new type of amantadine-containing diamine and dianhydride has excellent heat resistance properties, and its T g temperature range is 288 ～ 417 ° C and 10% heat The weight loss temperature is at least greater than 470 ° C. Compared to Comparative Examples 3 to 12, the introduction of the adamantane structure into the polyfluorene imine can obviously increase the T g by at least 50 ° C, indicating that the adamantane structure helps to improve the heat resistance properties of the polymer. Therefore, the present invention provides a new type of polyimide derived from amantadine diamine and dianhydride, which has high T g , low dielectric constant, and good solubility in organic solvents. It will have potential for industrial structural materials and integration. Circuit insulators and flexible electronic substrates. To sum up, the present invention is a method for preparing polyimide containing amantadine, which can effectively improve the various shortcomings. It is to provide a new polyimide containing amantadine diamine and dianhydride derived from high glass The characteristics of transfer temperature (T g ), low dielectric constant, and good solubility of organic solvents will have potential applications to industrial structural materials, integrated circuit insulators, and flexible electronic substrates, etc., so that the production of the present invention can be more Progress, more practical, and more in line with the needs of users, it has indeed met the requirements for invention patent applications, and filed patent applications according to law. However, the above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited by this; therefore, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the invention specification of the present invention , All should still fall within the scope of the invention patent.