对苯二甲酸

The calixarenes used as PTC in the fluorination of tetrachlorophthahaloyl chloride to obtain dimethyl tetrafluoroterephthalate were studied in this paper.

研究了杯芳烃在四氯对苯二甲酰氯氟化制备四氟对苯二甲酸二甲酯反应中的相转移催化作用，发现以杯芳烃作相转移催化剂使产品收率得到了明显提高。

An Effective way to Promote Quality of NPG ;2. The effects of the content of the third monomer NPG on the T_g, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度Tg、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

Copolymerization modification of PET was made by means of adding a third monomer on a homemade facility. The effects of the content of the third monomer NPG on the T, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度T、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

Copolymerization modification of PET was made by means of adding a third monomer on a home-made facility. The effects of the content of the third monomer NPG on the T_g, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度Tg、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

The DSC results showed that calcium carbonate,sodium benzoate and terephthalic acid were the nucleating agents of polypropylene with high thermal stability of the nucleating effect,while the thermal stability of nucleating effect of pimelic acid,suberic acid,azelaic acid,and the two component nucleating agents suberic acid/calcium carbonate and azela...

研究了碳酸钙、苯甲酸钠、对苯二甲酸和脂肪二元酸：庚二酸、辛二酸、壬二酸及其与碳酸钙组成的双组分成核剂对聚丙烯结晶成核效果的热稳定性。

Methyl-2,3,5,6-tetrafluoro-benzene methanol was synthesized by chlorination, acylation, fluorination, esterifica- tion, reduction, bromization, reduction from terephthalic acid. Tefluthrin was obtained from-(1RS,3RS)-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropa-necarboxylate acid by reacting with 4-methyl-2,3,5,6-tetrafluoro-benzene methanol.

以对苯二甲酸为原料，经氯化、酰氯化、氟化、酯化、还原、溴化、还原七步反应合成了4-甲基-2，3，5，6-四氟苄醇，甲基苄醇与-(1RS，3RS)-3-(2-氯-3，3，3-三氟丙-1-丙烯基)-2，2-二甲基环丙甲酸一步酯化合成了七氟菊酯。

With benzoic acid, terephthalic acid, 2. 6naphthalene dicarboxylic acid, dimethyl-2, 6-naphthalene dicarboxylate as solutes, water, acetic acid, N, N-dimethylformamide, N, N-dimethylacemide, dimethyl sulphoxide, N-methl2-ketopyrolidine, and the mixture of water and acetic acid as solvents respectively, the solubilities of 15 binary systems and 4 ternary systems were determined.

实验以苯甲酸、对苯二甲酸、2，6-NDCA、2，6-萘二甲酸二甲酯为溶质，以水、醋酸、N，N-二甲基甲酰胺、N，N-二甲基乙酰胺、二甲基亚砜、N-甲基-2-吡咯烷酮以及水和醋酸的混合溶液为溶剂，测定了十五个二元物系和四个三元物系的溶解度数据。

The transesterification reaction among poly,poly(ethylene 2,6- naphthalate),and PET／PEN copolymer were studied with1H-NMR.

通过用1H-NMR对聚对苯二甲酸乙二酯与聚2，6-萘甲酸乙二酯、PET/PEN共聚物的共混物酯交换反应的研究，测得了反应速率常数、反应活化能和诱导期。

Reparation of PBO was begun with the polymerization process in which composite salts that contained 4,6-diaminoresorcinol and terephthalic acid were dissolved in polyphosphoric acid and phosphorus pentoxide.

BO纤维制备：以4，6-二氨基间苯二酚的盐酸盐为单体原料，与对苯二甲酸混合，经过中和反应、脱色处理、干燥后制成复合盐；再以多聚磷酸为溶剂，添加五氧化二磷和抗氧化剂，经过预聚合反应制备出PBO聚合物；聚合物通过双螺杆挤出机进一步进行聚合，然后通过喷丝板挤出，在磷酸水溶液中凝固成型，经过洗涤、干燥等过程，最终卷绕成型。

The thermal behavious and structure of p(hydroxybenzoic acid/2-hydroxy-6-naphthoicacid)polyarylate /polyester blend fibers were investigated by means of DSC thermal analysis.

利用热分析的方法对聚（对羟基苯甲酸／6－羟基－2－甲酸萘［p（HBA／HNA］／聚对苯二甲酸乙二酯共混纤维的结构进行了研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。