戊醇

The compound 3, 9-bis (2＇, 4＇, 6＇-tribromophoxy)-2, 4, 8, 10-traoxa -3, 9-dip- hosphospiro [5.5] undecane -3, 9-dioxide (HFR-1) was prepared with pentaeryth- ritol, phosphorus oxychloride and 2, 4, 6-tribromophenoxy soldium by esterifica- tion and condensation reaction.

以三溴苯酚钠、三氯氧磷、季戊四醇为原料，通过酯化和缩合两步反应合成了阻燃剂3，9-双(2'，4'，6'三溴苯氧基)-2，4，8，10-四氧代-3，9-二磷螺环-3，9-二氧[5.5]十一烷。

R-4-Methyl-δ-valerolactone was transformed into-methyl 5-bromo-4-methylpentanoate (5) which is a stable and easily reserved reagent.

首次利用甾体皂甙元氧化降解废弃物-4-甲基－δ-戊内酯合成了松叶蜂性信息素(25，3S，7S)-3，7-二甲基－2-十五醇乙酸酯(2)和丙酸酯(3)。

The results of the TG and DTG curves show that, in the whole intumescing process, APP, PER and MEL cooperate with each other and synergism is generated; The kind of base resin and its contents, the ratio of the component of fire retardant system and their contents all have great influence on the thermal degradation behaviors of fire retardant coating; The concentration of oxygen has no influence on the thermal degradation of fire retardant coating below 345℃, while the influence can not be neglected above 345℃, but compare with the factors mentioned previously, the influence is small.

研究表明，聚磷酸铵-三聚氰胺-季戊四醇三者能密切配合，对阻燃起到协同作用；基料树脂的种类及含量、阻燃体系配比及含量对防火涂料的热分解行为有较大的影响；氧气浓度在低温阶段(345℃以前)对热解行为几乎没影响，而在高温阶段(345℃以后)则对热解行为有影响，但相对于前面的因素对热解的影响来说，氧气浓度对防火涂料的热解行为影响较小。

A kind of super-thin fire proofing coating for steel structure is prepared,with the mixture of amino resin and acrylic resin as base resin,ammonium polyphosphate、melamine、pentaerythritol as fire retardant system,TiO_2 and SiO_2 as pigment and filling.

选用氨基树脂和丙烯酸树脂混合体系为基料，聚磷酸铵、三聚氰胺、季戊四醇为阻燃体系，钛白粉和硅石粉为颜填料，制备超薄型钢结构防火涂料，并研究了基料、阻燃体系、颜填料用量对防火涂料防火性能的影响。

The company mainly produces cinnamaldehyde, cinnamic acid, cinnamic alcohol, cinnamic nitriles,-bromo-cinnamic aldehyde, amyl cinnamic aldehyde, acetic acid Gui ester, cinnamic acid acetate, L-carnitine, coumarin , vitamin B1 and so on, one of cinnamon products only amounted to more than 100 kinds of quality and technical content are up to domestic advanced level, is expected to reach an annual output value of 10 billion yuan.

公司主要生产肉桂醛、肉桂酸、肉桂醇、肉桂腈、α-溴代肉桂醛、戊基肉桂醛、乙酸桂酯、肉桂酸乙脂、左旋肉碱、香豆素、维生素B1等，其中仅肉桂系列产品就达100多种，其质量及技术含量均达到国内先进水平，预计年产值可达10亿元人民币。

The company mainly produces benzaldehyde, cinnamic aldehyde, cinnamic acid, cinnamic alcohol, cinnamic nitriles,-bromo-cinnamic aldehyde, amyl cinnamic aldehyde, acetic acid Gui ester, cinnamic acid acetate, L-carnitine, coumarin, vitamin B1, etc., of which only cinnamon series reached more than 100 kinds of products, its quality and technical content are up to domestic advanced level, is expected to reach an annual output value of 10 billion yuan.

公司主要生产苯甲醛、肉桂醛、肉桂酸、肉桂醇、肉桂腈、α-溴代肉桂醛、戊基肉桂醛、乙酸桂酯、肉桂酸乙脂、左旋肉碱、香豆素、维生素B1等，其中仅肉桂系列产品就达100多种，其质量及技术含量均达到国内先进水平，预计年产值可达10亿元人民币。

The effect of the mixture was 98.4 to 71.5% against powdery mildew of cucumber at 10-40 mg/L. The results showed that the mixtures in 1﹕10 had obvious synergistic interaction, and it can postpone fungicide resistance.

苯醚菌酯·戊唑醇的作用机制虽然不同，但2种有效成分组合在一起，对白粉病具有明显的增效作用，并还能有效延缓抗性的产生。

Pentaerythritol ester of gum rosin are made from gum rosin through esterification with pentaerythritol light color stabilizing process etc.

松香季戊四醇酯为松香经脱色、酯化和稳定化等工艺研制而成；应用于粘合剂、橡胶行业。

Pentaerythritol ester of gum rosin are made from gum rosin through esterification with pentaerythritol light color,stabilizing process etc.; used in adhesives,rubber products.

松香季戊四醇酯为松香经脱色、酯化和稳定化等工艺研制而成；应用于粘合剂、橡胶行业。

Isoprenoids have the advantage that, like alcohols, they are part of the natural biochemistry of many organisms.

类异戊二烯有个跟醇类一样的优势，那便是它们是许多有机体中生物化学成分所含有的。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。