levopimaric acid是什么意思

网络释义

用法例句

Bis-oxiranylmethyl ester of acrylic adduct of levopimaric acid (2) was prepared by acrylic adduct of levopimaric acid (1) with epichlorohydrin in the presence of phase-transfer catalyst.

丙烯海松酸 (1)与环氧氯丙烷在弱碱及相转移催化剂存在下反应得到丙烯海松酸二缩水甘油酯 (2 ) ,探索出较佳的反应路线 ,产物分离纯化后对其结构和性能进行了研究。

Determination of isopimaric acid in leaves of Platycladus orientalis and its preparations Cebai No.V Capsula and Isopimaric Acid Capsula by HPLC;

HPLC法测定侧柏叶及其制剂侧柏Ⅴ号胶囊和异海松酸胶囊中异海松酸

Rosin type can be determined and distinguished from the content of isopimaric acid and the quantity ratio of pimaric acid/isopimaric acid.

用纯马尾松松脂、纯湿地松松脂、纯思茅松松脂制得松香样品;应用DB-5毛细管柱对松香样品中主要的树脂酸含量进行了气相色谱定量分析;通过测定松香样品中异海松酸GC含量和海松酸/异海松酸GC含量的比值,可以确定并鉴别松香所属种类。

Result: Eight compounds were isolated and identified as isopimaric acid(Ⅰ), β-sitosterol(Ⅱ), 24R, 5α-stigmast-3,6-dione(Ⅲ), larixol(Ⅳ), ferulic acid(Ⅴ), lariciresinol(Ⅵ), secroisolariciresinol(Ⅶ)and isolariciresinol(Ⅷ).

结果:从其醇提物的氯仿部分分离并鉴定了8个化合物,分别为:异海松酸(Ⅰ),β-谷甾醇(Ⅱ),24R-5α-豆甾烷-3,6二酮(Ⅲ),larixol(Ⅳ),阿魏酸(Ⅴ),落叶松脂醇(Ⅵ),开环异落叶松脂醇(Ⅶ),异落叶松脂醇(Ⅷ)。

Progress of research and application of maleopimaric acid and its derivatives;

马来海松酸及其衍生物的研究与应用进展

A series of polyethoxylated maleopimaric acid glycerol ester(MRGEO) with different oxyethylene unit( n ) were synthesized.

合成了不同聚合度的马来海松酸甘油酯聚氧乙烯醚 (MRGEO) 。

Alkyd resins were prepared from maleopimaric acid(MPA)which consists of maleic and rosin instead of phthalic anhydride.

采用松香和顺酐反应合成的马来海松酸 (MPA)代替苯酐制备醇酸树脂涂料。

Synthesis and application of UV-curable acrylpimaric acid polyurethane acrylate;

UV固化丙烯海松酸聚氨酯丙烯酸酯的合成及应用

In this paper, a complex epoxy resin was synthesized by esterification and ring-closure of acrylpimaric acid and C -36 dimeric acid(DA) with excessive epichlohydrin(ECH).

通过丙烯海松酸(APA)和二聚脂肪酸(DA)按一定比例混合,与环氧氯丙烷(ECH)进行酯化反应、闭环反应,合成了APA与DA复合环氧树脂。

Condensation reaction between acrylpimaric acid and different diols was studied.

研究了丙烯海松酸与不同二元醇的缩聚反应 ;讨论了不同反应条件对产物性能的影响。

The Synthesis of MPA Glycidyl Ester;

马来海松酸缩水甘油酯的合成

In this paper maleipimaric acid (shortened form MPA) was prepared using rosin that is abundant reproducible resource in china; Unsaturated polyester rosin (shortened form UPR) was synthesized by melt condensation polymerization, taking biatomic acids、 diatomic alcohols and prepared MPA as main raw materials.

本研究利用我国来源丰富的可再生资源——松香精制出马来海松酸(MPA),与二元酸和二元醇熔融缩聚合成不饱和聚酯树脂(UPR)。