先穿一层薄的化纤衣料比如聚苯烯,这样可以吸收身上的汗。
Start with a thin layer of synthetic material such as polypropylene, which wicks sweat from your body.
防滑片的材料为合成橡胶如丁基人造橡胶或丁基苯烯人造橡胶。
The material of the antiskid sheets is synthetic rubber, such as artificial rubber or butyl benzene alkene artificial rubber.
考察了催化剂用量、反应温度、反应时间、苯烯比对烷基苯收率和烷基化油质量的影响。
The effects of catalyst dosage, the ratio of benzene to olefin, reaction temperature and reaction time on the yield of alky -benzene and the quality of alky late were investigated.
实验结果表明,随着苯烯比的增加,十二烯的转化率和2位-十二烷基苯的选择性均有所增加。
It is showed that the conversion ratio of dodecene and the selectivity of producing 2-alkylbenzene are slightly increased with increasing molar ratio of benzene to dodecene, respectively.
在固定床反应器和一定的反应条件下,考察了改变苯烯摩尔比对负载杂多酸催化剂催化合成直链烷基苯的活性和选择性的影响。
The solid acid catalyst of supported heteropoly acid used for the synthesis of linear alkylbenzene from benzene and dodecene was characterized by using XRD, SEM, TEM and FT-IR.
针对苯烃化催化精馏过程,围绕减缓催化剂失活的问题,采用过程数学模拟与试验研究相结合的方法,考察了进料苯烯物质的量比对过程结果和催化剂失活的影响。
In this paper, the research on the catalytic distillation process of alkylation of benzene with ethylene, aiming at slowing down the deactivation of the catalyst, has been reported.
赤芍主要挥发成分为(Z, Z)-9, 12-十八碳二烯酸,正十六碳酸和2-羟基苯甲醛。
The main volatile chemical components of RPR are(Z, Z)-9,12-octadecadienoic acid, n-hexadecanoic acid and 2-hydroxy-benzaldehyde.
用该方法测定了5批多烯磷脂酰胆碱注射液中苯甲醇的含量,该方法为多烯磷脂酰胆碱注射液简便、合理、可靠的质量控制方法。
This method has been applied to 5 different polyene phosphatidyl choline injection. This is a more convenient, reasonable and reliable control method for polyene phosphatidyl choline injection.
我们就能预计苯的较低和较高的插烯物在这方面也应是类似的。
We might predict that both the lower and higher vinylogs of benzene should be similar in this respect.
本文研究了在高压汞灯照射下,二苯甲酮和3,4 -聚异戊二烯间的能量传递机理。
This paper studied the energy transmission mechanism between benzophenone and 3, 4-polyisoprene which were irradiated by high pressure Hg lamp.
冰片基氯化镁与二苯酮的反应产物是二苯基冰片基甲醇、二苯基甲醇和它的氧化产物冰片烯。
The reaction products of bornyl magnesium chloride with diphenyl ketone are diphenyl bornyl carbinol, diphenyl carbinol and its corresponding oxidation product, bornylene.
约有30种化合物已从绿茶的香气中鉴别出来,其中主要的有苯甲醇、苯乙醇、已烯醇、沉香醇、香茅醇和甲基水杨酸酯。
Approximately 30 compounds have been identified in the aroma of green tea, the major ones being benzyl alcohol, phenylethyl alcohol, a hexenol, linalool, geraniol and methyl salicylate.
研究了苯磺酸型树脂催化的异戊烯和甲醇的醚化,考查了温度、醇烯比和空速对反应的影响。
The etherification of isoamylenes and methanol to form tert all methyl ether (TAME) by benz-sulfonic acid cation exchange resin as catalyst, was studied.
在常压反应釜和固定床反应装置上进行,评价了催化剂对苯和1-十二烯烷基化反应催化性能。
Their catalytic activities were measured by alkylation of benzene with 1-dodecene as model reaction in a slurry reactor under atmospheric pressure and fixed bed reactor.
它们是乙酸、苯甲醛、正葵酸、14-甲基十五烷酸甲酯、丙三醇、苯甲酸、6 ,9-十八碳二烯酸甲酯、角鲨烷、硬脂酸和二十烷基油酸酯。
They were acetic acid, benzaldehyde, n caproic acid, 14 methyl pentadecanoic methyl ester, glycerin, benzoic acid, 6,9 octadecadienoic methyl ester, squalane, stearic acid and oleic eicosyl ester.
我们知道聚丁二烯(PB)胶乳或丁苯(SBR)胶乳的橡胶粒径是控制最终产品抗冲性能和加工性能的重要指标。
It is widely recognized that, in such cases, the particle diameter of rubber (PB latex or SBR latex) greatly governs the impact resistance and processability of the final products.
烯丙基苯并恶嗪中间体是由烯丙基苯酚类化合物,与苯胺、甲醛脱水缩合反应而成。
Allyl-functional benzoxazine is synthesized by the reaction of allyl phenol, phenyl amines, and formaldehyde.
采用均苯四甲酸酐(PMDA)和过氧化二苯甲酰(BPO)双固化剂固化聚丁二烯环氧树脂(ELPB),制备了ELPB/PMDA/BPO耐高温胶粘剂。
The high temperature resistant adhesive was prepared based on liquid polybutadiene epoxy resin(ELPB) cured by pyromellitic dianhydride(PMDA) and benzoyl peroxide(BPO).
论文同时研究了不同因素对星型聚丁二烯和星型丁苯无规共聚物微观结构的影响。
The thesis also studies the effect of different factors on microstructure of star-shaped polybutadiene and star-shaped butadiene-styrene random copolymer.
为研究硫醇烯光固化组成物的反应机理,选用安息香双甲醚、安息香乙醚、安息香正丁醚、二苯甲酮和噻吨酮为光敏剂,用红外光谱法研究了硫醇烯的光化学反应动力学。
The kinetics of thiol-ene reaction is studied by Fourier Transform Infrared when benzoin dimethyl ether, benzoin ethyl ether, benzoin butyl ether, benzophenone and ITX were used as photosensitizer.
运用示差扫描量热(dsc)法研究了邻苯二甲酸二烯丙基酯(DAP)树脂的固化反应历程。
Curing reactions of diallyl phthalate (DAP) resin were studied by differential scanning calorimetry (DSC).
挥发物在种间存在差异,正常的复叶槭挥发大量的萜烯,而杨柳产生苯系物较多。
There were some difference among species. Health ashleaf maple released more terpenoids, but poplars and willow produced more aromatic compounds.
本发明涉及一种用于制备链烯基化的羟化芳族化合物、苯并二氢吡喃化合物和其酰化衍生物的方法。
The present invention relates to a process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives.
一种用于聚合高顺式异戊二烯橡胶的磺酸稀土催化剂,其特征在于该催化剂是由苯磺酸钕稀土配合物及烷基铝组成;
The invention relates to a sulfoacid rare earth catalyst for polymerizing high-cis-isoprene rubber and a preparation method thereof.
一种用于聚合高顺式异戊二烯橡胶的磺酸稀土催化剂,其特征在于该催化剂是由苯磺酸钕稀土配合物及烷基铝组成;
The invention relates to a sulfoacid rare earth catalyst for polymerizing high-cis-isoprene rubber and a preparation method thereof.
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