p-Hydroxybenzoic acid

  • 网络对羟基苯甲酸
p-Hydroxybenzoic acidp-Hydroxybenzoic acid
  1. Effect of Syringic Acid and P-hydroxybenzoic Acid on Seed Germination and Seedling Growth of Wild Oat

    丁香酸、对羟基苯甲酸处理对野燕麦萌发及幼苗生长的影响

  2. Surface enhanced Raman scattering from benzoic acid , salicylic acid and p-hydroxybenzoic acid in Ag colloids

    苯甲酸、邻羟基苯甲酸和对羟基苯甲酸在银胶粒中的表面增强喇曼散射

  3. Conclusion P-hydroxybenzoic acid was first isolated from this plant .

    结论对羟基苯甲酸为首次从该植物中分离得到。

  4. Effect of p-Hydroxybenzoic Acid on Crystallization Behavior and Mechanical Properties of HDPE

    对羟基苯甲酸对HDPE结晶行为及力学性能的影响

  5. Studies on Supercritical Fluid Chemistry Reaction to Synthesis P-hydroxybenzoic acid

    超临界化学反应合成对羟基苯甲酸的研究

  6. Experimental and Theoretical Study on p-Hydroxybenzoic Acid Imprinted Polymers with Different Functional Monomers

    由不同功能单体合成的对羟基苯甲酸分子印迹聚合物识别特性的实验和理论研究

  7. Photocatalytic Reduction of Cr (ⅵ) in TiO_2 Dispersion by p-Hydroxybenzoic Acid

    对羟基苯甲酸存在下TiO2粉末光催化还原Cr(Ⅵ)的动力学研究

  8. The p-hydroxybenzoic acid assumes special construction of aromatic compounds , and exhibits promotion effect on Cr (ⅵ) reduction .

    对羟基苯甲酸具有芳香族化合物的特殊结构,对TiO2光催化还原Cr(Ⅵ)过程有显著的促进作用。

  9. THERMOTROPIC LIQUID CRYSTAL POLYMERS & Wholly Aromatic p-Hydroxybenzoic Acid Copolyesters Containing Naphthalene Rings

    热致液晶性聚合物&含萘环主成分为对羟基苯甲酸的全芳香族共聚酯

  10. Studies on Synthesis and Characterization of Ternary Complex of Cu (ⅱ) with 8-quinolinol and p-Hydroxybenzoic Acid

    混合配体、稀土三元配合物的研究&Ⅳ.氯化铜(Ⅱ)、8-羟基喹啉、对羟基苯甲酸三元配合物的合成、表征及电学性质

  11. Effects of p-hydroxybenzoic Acid on Cowpea Fusarium Wilt Fungus

    对羟基苯甲酸对豇豆枯萎病菌的抑制作用

  12. Application of Capillary Zone Electrophoresis in Analysis of Antagonists as p-Aminobenzoic Acid , p-Hydroxybenzoic Acid and Sulfanilamide

    毛细管电泳在拮抗药物对氨基苯甲酸、对羟基苯甲酸和磺胺分析测定中的应用

  13. The adsorption thermodynamic and kinetic behaviors of phenol and p-hydroxybenzoic acid on NDA-100 were studied .

    研究了NDA100树脂对苯酚和对羟基苯甲酸等酚酸类物质的吸附动力学和热力学行为。

  14. A study on low molecular weight and thermotropic liquid crystals of aromatic copolyesters based on p-hydroxybenzoic acid terephthalic acid and bisphenol A

    低分子量芳香族热致液晶聚(对羟基苯甲酸-对苯二甲酸双酚A酯)的研究

  15. The results revealed that : ( 1 ) Treating with inhibitor ( p-hydroxybenzoic acid solution ) reduced activity of TYE significantly during the storage .

    对羟基苯甲酸溶液(抑制剂)对蘑菇酪氨酸酶起了显著的抑制作用。

  16. Thermal Properties of Thermotropic Liquid Crystalline P-Hydroxycinnamic Acid ( PHC ) and P-Hydroxybenzoic Acid ( PHB ) Unsaturated Copolyesters

    不饱和PHC与PHB热致液晶共聚酯的热性能研究

  17. In this paper , butyl nipagin was synthesized with solid heteropoly acid as catalyzer , p-hydroxybenzoic acid and isobutanol as raw material .

    本文以固体杂多酸为催化剂,以对羟基苯甲酸与异丁醇为原料合成尼泊金丁酯。

  18. Dichlorophenol was synthesized from p-hydroxybenzoic acid in an overall yield of about 67 . 5 % via Chlorination and decarboxylation .

    4-羟基苯甲酸经气化、脱羧得2,6-二氯苯酚(1)。总收率67.5%。

  19. The synthesis of nipagin ester with solid acid catalyst of HY type has been carried out by esterification of n-butyl alcohol and p-hydroxybenzoic acid .

    以对羟基苯甲酸和正丁醇为原料,在HY固体酸催化剂作用下,酯化合成尼泊金丁酯。

  20. Nipagin esters were synthesized by the esterification of dodecyl and octadecyl alcohol with p-hydroxybenzoic acid in the presence of vitamin C.

    以维生素C为催化剂,对羟基苯甲酸和十六醇及十八醇为原料合成尼泊金十六酯与尼泊金十八酯。

  21. Soil culture and water culture experiments carried through imitating the allelochemicals of the root exudates showed that cinnamic acid and p-hydroxybenzoic acid obviously inhibited continuous cropping cucumber growth .

    通过模拟根系分泌物中的化感物质进行土培和水培试验,证明苯丙烯酸、对羟基苯甲酸对连作黄瓜根系生长有明显的抑制作用。

  22. Methods The substance was synthesized from P-hydroxybenzoic acid through three steps , those are etherification , preparation of acyl halide and amidation of the raw material .

    方法以对羟基苯甲酸为原料,经三步合成,即原料的醚化、酰氯制备和酰胺化。

  23. The results indicated that : P-hydroxybenzoic acid and tributyl phosphate as new types of inhibitors , were liable to interact with copper forming SAMs on the surface of copper .

    结果发现:对羟基苯甲酸和磷酸三丁酯作为新型铜缓蚀剂,都可以在铜表面形成自组装膜。

  24. The sequence of earlier chlorination reaction rate of HAAs is m-Benzenediol > p-Aminoacetophenone > p-Hydroxybenzoic acid > o-Benzenediol ;

    卤乙酸的前期氯化反应速度排序为:间苯二酚>4-氨基苯乙酮>对羟基苯甲酸>邻苯二酚;

  25. The optimum conditions were as follows : molar ratio of n-butanol to p-hydroxybenzoic acid was 3 , mass of catalyst was 3g , reaction time was 3h . The yield could reach 92.9 % .

    最佳反应条件为:正丁醇与对羟基苯甲酸摩尔比为3∶1,催化剂用量3g,反应时间3h,收率92.9%。

  26. In 2002 , there were 16 manufacturers of p-hydroxybenzoic acid ( PHBA ) in China with total capacity of 17000t / a and output of 6000t , two thirds of which was for exports .

    2002年,我国共有16家对羟基苯甲酸(PHBA)生产企业,总生产能力为17万t/a,产量6000t,其中2/3用于出口。

  27. In this paper , the copolyesters made from polyethylene terephthalate ( PET ) and P-hydroxybenzoic acid ( PHB ) were prepared at 290 ℃ and sequence distribution law of PET / PHB copolyesters have been examined by 400 MHz ~ 1H-NMR .

    本文在290℃用熔融共缩聚制备了系列PET/PHB共聚酯,用高分辨核磁共振(400MHz~1H-NMR)研究了PET/PHB共聚酯的序列分布规律。

  28. Poly ( butylene terephthalate ) / p-hydroxybenzoic acid copolyesters ( PBT / PHB ) with different mole fractions of PHB were synthesized from PBT and PHB by in-situ acetylation . The relationships between their phase transition and liquid crystallinity and the composition were investigated .

    采用原位乙酰化法,合成了对羟基苯甲酸(PHB)摩尔分数不同的PBT/PHB共聚酯,研究了其组成与相转变和液晶性之间的关系。