二二二

2A series of alternating polyamide-imideswith fluorenyl cardo structure was synthesized by "one-pot" polycondensation of cardo diamines,trimellitic anhydride and various aromatic diamines including p-phenylene diamine,m-phenylene diamine, 4,4\'-oxydianiline,3,4\'-oxydianiline,2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(3-aminophenoxy)phenyl]propane respectively using triphenyl phosphite as condensing agents.

采用"一锅法"(One—pot Synthesis)，由Cardo二胺、偏苯三酸酐和不同二胺包括对苯二胺、间苯二胺、4，4\'—二氨基二苯醚、3，4\'—二氨基二苯醚、2，2—双[4—(4—氨基苯氧基苯基]丙烷和2，2—双[4—(3—氨基苯氧基)苯基]丙烷合成了一系列含有芴基Cardo结构的交替聚酰胺酰亚胺。

Suitable water-immiscible organic solvents include aromatic hydrocarbons, eg toluene, xylene, naphthalene, tetrahydronaphthalene and methyl naphthalene; chlorinated aromatic hydrocarbons, eg chlorobenzene, fluorobenzene, chloronaphthalene and bromonaphthalene; esters, eg butyl acetate, ethyl acetate, methyl benzoate, ethyl benzoate, benzyl benzoate, butyl benzoate, phenylethyl acetate, butyl lactate, benzyl lactate, diethyleneglycol dipropionate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di(2-ethylhexyl) phthalate; alcohols having six or more carbon atoms, eg hexanol, octanol, benzyl alcohol, phenyl ethanol, phenoxy ethanol, phenoxy propanol and phenoxy butanol; ethers having at least 5 carbon atoms, preferably C 5-14 ethers, eg anisole and phenetol; nitrocellulose, cellulose ether, cellulose acetate; low odour petroleum distillates; turpentine; white spirits; naphtha; isopropylbiphenyl; terpene; vegetable oil; mineral oil; essential oil; and natural oil; and mixtures of any two or more thereof.

适用于水互溶的有机溶剂包括芳香族碳氢化合物，如甲苯，二甲苯，萘，四氢萘和甲基萘；氯代芳香族碳氢化合物，如氯苯，氟，氯萘和萘；酯类，如醋酸丁酯，醋酸乙酯，苯甲酸甲酯，苯甲酸乙酯，苄酯，苯甲酸正丁酯，苯，醋酸丁酯乳酸，乳酸苄，二甘醇二丙酸酯，邻苯二甲酸二甲酯，邻苯二甲酸二乙酯，邻苯二甲酸二丁酯，二（2乙基己基）酯；醇有6个或更多碳原子，如己醇，辛醇，苯甲醇，苯乙醇，苯氧基乙醇，丙醇和苯氧基苯氧丁醇；醚至少有5个碳原子，最好荤5-14醚，如苯甲醚和phenetol；硝化棉，纤维素醚，醋酸纤维素，低气味石油蒸馏；松节油；白酒，石脑油isopropylbiphenyl；萜类，植物油，矿物油，挥发油；和天然油，以及任何两个或两个以上其混合物。

Difluorodiphenylsulfone and 4, 4"-difluorodiphenylketone are sulfonated by 50 % sulfuric acid. A new biphenol monomer containing six-membered ring imide is synthesized by reaction of 1, 4, 5, 8-naphthelenetetracarboxylic acid dianhydride with 3-aminophenol or 4-aminophenol sodium.

以50%发烟硫酸为磺化试剂，以4，4′-二氟二苯砜和4，4′-二氟二苯酮为原料反应得到双磺化的4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯砜和4，4′-二氟-3，3′-二磺酸钠-1，1′-二苯酮。

The invention relates to a process for producing polyethylene terephthalate 1, 3-propanediol, which comprises the following steps: using titanic acid ester as major catalyst, using germanium compounds and cobalt compounds as synergic catalyst, conducting esterification reaction for poly terephthalic acid and 1, 3-propanediol according to the molar 1:1.05-2.2 under the nitrogen pressure of 0.1-0.4MPa and 230-265 DEG C, or conducting ester exchanging reaction for poly terephthalic acid and 1, 3-propanediol according to the molar ratio 1:1.8-2.2 in 160-220 DEG C, decompressing reaction to high vacuum 10-150Pa, wherein the final temperature of reaction is 265-275 DEG C, recovering to normal pressure with nitrogen to obtain the PTT product.

本发明涉及一种生产聚对苯二甲酸1，3-丙二醇酯的方法，采用以钛酸酯为主催化剂，锗化合物和钴化合物为协同催化剂，对苯二甲酸二甲酯和1，3-丙二醇按摩尔1∶1.05-2.2，在0.1-0.4MPa氮气压力和230-265℃下进行酯化反应，或对苯二甲酸二甲酯和1，3-丙二醇按摩尔比1∶1.8-2.2，在160-220℃进行酯交换反应，将反应减压至高真空10-150Pa，反应终温在265-275℃，用氮气恢复到常压，得到本PTT产品；大大缩短了反应时间，直接聚合制备特性粘度在0.7-1.05dL/g的PTT切片，使反应产物色相良好，PTT产品可用于纤维加工及工程塑料领域。

The invention relates to polyimide molding powder with low melt viscosity and a preparation method, which uses 3,4'- diamino diphenyl ether, 3,3',4,4'-diphenyl ketone dicarboxylic anhydride, 3,3',4,4'-biphenyltetracarboxylic dianhydride, 3,3',4,4'- triphenyl diether dicarboxylic anhydride, 3,3',4,4'- diphenyl ether dicarboxylic anhydride and other monomers to polymerize at 100 to 140 DEG C, to get molding powder with a melt viscosity in the range of 1000Pa.s to 5000Pa.s.

本发明属于一种低熔体粘度聚酰亚胺模塑粉及制备方法，是采用3，4′-二氨基二苯醚同3，3′，4，4′-二苯酮四酸二酐、3，3′，4，4′-联苯四酸二酐、3，3′，4，4′-三苯二醚四酸二酐、3，3′，4，4′-二苯醚四酸二酐等单体在100～140℃聚合，获得熔体粘度在1000Pa.s～5000Pa.s范围内的模塑粉。

Results Compound albicanyl caffeate displayed strong antifungal property with MIC 4 μg/ml, while moderate antifungal effects (MIC16 μg/ml)were observed with compounds emodin, resveratrol, 3,4'-difluorostilbene, 2,2'-difluorostilbene and 2,3',5'-trifluorostilbene. Pakyonol, catechin, ampelopsin A, 3,4,4'-trihydroxyl- bibenzyl, 2,4'-difluorostilbene, 4-fluorostilbene,2-methyloxy-4'-fluorostilbene showed lower activity with MIC 32 μ g/ml.

结果化合物albicanyl caffeate对白色念珠菌表现出强的抗真菌活性，MIC为4μg/ml；而化合物大黄素、白藜芦醇、3，4'-二氟二苯乙烯、2，2'-二氟二苯乙烯及2，3'，5'-三氟二苯乙烯显示出中等程度的抗真菌活性，MIC为16μg/ml；双联苄pakyonol、多酚类儿茶素、白藜芦醇二聚体野葡萄素A、3，4，4'-三羟基联苄、2，4'-二氟二苯乙烯、4-氟二苯乙烯及2-甲氧基-4'-氟二苯乙烯显示出较弱的抗真菌活性，MIC为32 μg/ml。

Undecanedioic acid, dodecanedioic acid, brassylic acid, tetradecanedioic acid, pentadecanedioic acid, nylon 1212 resin, nylon 1212 salt, nylon 1212 powder, pa 1212 adhesives and sealants, zirconium dioxide, zirconium dioxide powder, zirconium oxychloride, 1,10-decanediol, 1,12-dodecanediol, dimethyl sebacate, dodecanedioic acid dimethyl ester, dodecane diamine etc.

十一碳二元酸，十二碳二元酸，十三碳二元酸，十四碳二元酸，十五碳二元酸，十二碳二元胺，十二碳二元醇，癸二醇，癸二酸二甲酯，十二碳二酸二甲酯，PA尼龙1212型高档热熔胶；以及二氧化锆，氧氯化锆等。

The copolycondesation type polyamic acid was synthesized by using pyromellitic dianhydride and 3,3',4,4'-benzophenonetetracarboxylic dianhydride as the dianhydride monomers, 4,4'-diamino diphenylmethane and 4,4'-oxydianiline as the diamine monomers under microwave irradiation in dimethylformamide.

在N，N'-二甲基甲酰胺溶剂中，以均苯四甲酸酐和3，3'，4，4'-二苯酮羧酸二酐为二酐单体，4，4'-二氨基二苯醚和4，4'-二氨基二苯甲烷为二胺单体，采用微波辐射低温溶液共缩聚，合成了聚酰胺酸预聚体，然后亚胺化脱水、环化，生成共缩聚聚酰亚胺。

Among the six polyetherimdes, ODPA-IPDA with the largest free-volume and larger intrasegmental mobility has the highest permeability and the lowest permselectivity, ODPA-DABP with the smallest free- volume and the smallest intrasegmental mobility has the lowest permeability and the lowest permselectivity, ODPA-DMMDA with the larger free-volume and smaller intrasegmental mobility has higher permeability and higher permselectivity.

二苯醚四酸二酐（ODPA－4.4＇－二J氨基二苯异丙烷具有很大的自由体积和较小的链段活动性、很大的透气性和较小的透气选择性，ODPA—4，4'－二氨基二苯酮具有很小的自由体积和较小的链段活动性、很小的透气性和较大的透气选择性，ODPA—3，3'－二甲基二苯甲烷二胶具有较大的自由体积和较小的链段活动性、很大的透气性和很大的透气选择性。

Gas chromatograph/mass spectrometer system was used to analyze polycyclic aromatic hydrocarbon (PAHs, including naphthalin, anthracene and fluoranthene) and phthalic acid ester [PAEs, including dimethyl phthalate, diethyl phthalate, diisobutyl phthalate and di(2-ethylhexyl) phthalate] concentration in water samples taken from every treatment units of a large-scale waterworks in a western city whose water source is the upstream of Yangtze river.

以多环芳烃(包括萘、蒽、荧蒽三种物质)和邻苯二甲酸酯包括邻苯二甲酸二甲酯(DMP、邻苯二甲酸二乙酯、邻苯二甲酸二异丁酯、邻苯二甲酸二(2-乙基己基)酯4种物质作为研究对象，采用GC-MS方法测定了以长江为原水的某大型城市给水厂各工艺段水样中的上述物质。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。