甲基丙醛

Dimethicone ,Cyclopentasiloxane,Dimethicone/Vinyl Dimethicone Crosspolymer,Polysilicone-11,Glycoproteins,Panax Ginseng Root Extract,Equisetum Arvense Extract,Silica Dimethyl Silylate ,Bisabolol,Tocopheryl Acetate ,Sodium Hyaluronate,Ursolic Acid,Atelocollagen,Sodium Chondroitin Sulfate,Ethylhexyl Methoxycinnamate,Polyglyceryl-2 Tetraisostearate ,Glycerin ,Water,Alcohol,Butylene Glycol ,Lecithin,Xanthan Gum ,Mica,Fragrance ,Benzyl Alcohol,Linalool ,Hydroxycitronellal,Alpha-Isomethyl Ionone ,Amyl Cinnamal,Hexyl Cinnamal,Palm Tree Extract,Geraniol,Benzyl Benzoate,Butylphenyl Methylpropional,Phenoxyethanol,Methylparaben,Isopropylparaben,Butylparaben ,Isobutyl Paraben,Titanium Dioxide,Carmine

地美司康，环戊硅氧烷，聚二甲基硅氧烷/乙烯基聚二甲硅氧烷交联聚合物，聚硅氧烷-11，糖蛋白，人参根萃取，问荆萃取，二甲基甲硅烷基化硅石，没药醇，醋酸盐维他命E，透明质酸钠，熊果酸，去端肽胶原，硫酸盐软骨素，4-甲氧基肉桂酸-2-乙基己基酯，聚甘油-2 四异硬脂酸酯，甘油，水，酒精，丁二醇，卵磷脂，山羊胶，云母，香料，苯甲醇，沉香醇，羟基香茅醛，α异甲基紫罗酮，戊基肉桂醛，己基肉桂醛，棕榈树萃取，香叶醇，苯甲酸苯甲酯，丁苯基甲基丙醛，苯氧乙醇，羟苯甲酯，羟苯丙酯，羟苯丁酯，二氧化钛，胭脂虫红

The decarboxylation of 5-hydroxymethylfurfural to levulinic acid is a key step in the preparation of levulinic acid from biomass.

5-羟甲基糠醛脱羧生成乙酰丙酸是生物质资源出发制备乙酰丙酸过程中的关键步骤之一。

Selective oxidation of isobutylene to methacrolein is a key step in the production of methyl methacrylate from isobutylene.

异丁烯选择氧化制备甲基丙烯醛是异丁烯法制备甲基丙烯酸甲酯的关键步骤。

The progress of catalysts, which include composite-oxides catalysts and heteropoly compounds catalysts, for selective oxidation of isobutylene to methacrolein were summarized, the mechanism of this reaction on Mo-Bi catalysts was discussed.

本文综述了异丁烯选择氧化生成甲基丙烯醛催化剂，其中包括复合氧化物催化剂和杂多化合物催化剂等的研究现状，讨论了在Mo-Bi催化剂上异丁烯选择氧化生成甲基丙烯醛的反应机理。

Pb and Fe as promoters, Pd/CaCO3 Lindlar catalysts were modified by impregnation method of fractional steps on unique supports. The new catalysts were prepared for one-step oxidative esterification of methacrole to continuously synthesis methyl methacrylate.

以Pb、Fe为助剂用分步浸渍法在特制的载体上改性Pd/CaCO3催化剂，制备了用于甲基丙烯醛一步氧化酯化液相连续法制备甲基丙烯酸甲酯的新型催化剂。

Main production and management projects: piperonyl butoxide, Piperonal aldehyde, C Piperonyl aldehyde, PMK, eucalyptus oil, according to pituitrin, citral, ionone, cubeba oil, Geranium oil, 99 % natural a bit terpineol, pine oil acetate, sassafras oil, natural spices; run: Fragrance, tobacco flavor, food flavor, natural flavor essence seasoning products.

胡椒基丁醚、洋茉莉醛、胡椒基丙醛、胡椒基甲基酮、桉叶油、按叶素、柠檬醛、紫罗兰酮、山苍子油、香叶油、99%天然甲位松油醇、乙酸松油脂、黄樟油等天然香料；兼营：日化香精、烟用香精、食用香精、调味品香精等天然香精产品等。

The preparation of 2,2-dimethyl-3-hydroxy propanal from the condensation of formaldehyde and i-butyraldehyde by using triethylamine as catalyst was studied.

以异丁醛和甲醛为原料，三乙胺为催化剂，羟醛缩合法合成了2，2-二甲基－3-羟基丙醛。

Aqua, Sorbitol, PPG-1 PEG-9 Lauryl glycol ether, Hydrolyzed elastin, Hydrolyzed wheat gluten, Hydrolyzed collagen, Hydrolyzed glycosamino-glycans, Humulus lupulus, Propylene glycol, Triethanolamine, Sodium hydroxide, Carbomer, Maris limus extract, Ostrea extract, Imidazolidinyl urea, Parfum, Benzyl salicylate, Coumarin, Alpha isomethyl ionone, Hexyl cinnamal, Buthylphenylmethylpropionate, Linalol, Methylisothiazolinone, Methylchloroisothiazolinone.

水，山梨醇， PPG 公司- 1聚乙二醇- 9十二烷基醇醚，水解弹性蛋白，水解小麦面筋蛋白，水解胶原蛋白水解粘多糖，多聚糖，啤酒花提取物花，丙二醇，三乙醇胺，氢氧化钠，卡波姆，马里斯提取物，牡蛎提取物，咪唑烷基脲，香水，水杨酸苄酯，香豆素，阿尔法 l 紫罗兰酮，己基肉桂醛，丁苯基甲基丙醛，芳樟醇，甲基异噻唑啉酮，甲基氯异塞唑晽酮。

The results indicated isoprene was soon consumed under the condition of excess ozone. During the reaction, the major carbonyl products formed were methyl vinyl ketone, methacrolein, methylglyoxal, and formaldehyde. Formic acid, CO and CO2 were also among the products.

在反应温度(294±2)K，压力为1.01×10^5Pa空气，O3过量的条件下，异戊二烯很快反应完全，反应中生成的羰基产物主要包括甲基丙烯醛、甲基乙烯基酮、丙酮醛和甲醛；产物中还包括甲酸、一氧化碳和二氧化碳。

The effect of impurities in DMDAAC monomer solution, such as NaCl, allyl chloride, allyl alcohol, allyl aldehyde, active carbon, low molecular polymer of DMDAAC, yellow residua, Fe~(3+), Fe~(2+), Cu~(2+), on the polymerization reactivity of preparing PDA with 30％cationicty was researched in this paper.

本文研究了二甲基二烯丙基氯化铵单体溶液中氯化钠、烯丙基氯、烯丙醇、烯丙醛、活性炭、低分子聚合物、黄色物质、Fe~(3+)、Fe~(2+)、Cu~(2+)等杂质对合成阳离子度为30％PDA的聚合反应性能的影响。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。