查询词典 formaldehyde solution

Heterogeneous acetalization with formaldehyde is applied to treat the blend PVA/PAA composite membrane, in result, this is able to change both separation factor and permeate flux of the membrane.

研究了PVA/PAA共混复合膜的分离性能，并对膜进行非均相缩甲醛化改性。发现，PVA膜的非均相缩甲醛反应，可以改变膜的分离系数与通量。

Specifically, it is applicable to the production of dissolvent type of coating materials such as formaldehyde phenol resin, alkide resin, epoxy resin, epoxy polyester and acrylic resin as well as water-soluble resin coating materials such as highly adaptable water-soluble epoxy ester dipping paint.

适用于酚醛树脂、醇酸树脂、环氧树脂、环氧聚酯以及丙烯酸树脂等溶剂型涂料以及各种水溶性树脂涂料（如：高适应性水性环氧酯浸涂漆等）；还可应用于厚浆型涂料、粉末涂料、有机钛防腐蚀涂料、带锈涂料和沥清漆、富锌底漆、防火涂料、耐热涂料等。

Synthesis and application of formaldehyde-free dye-fixing agent ENF;2. Chlorine-resistant reactive dye-fixing agent CRS was prepared by mixing polyamine CS and polymer CR synthesized by dimethyldiallyl-ammonium chloride and allylamine.

文章以二甲基二烯丙基氯化铵和烯丙基胺为原料合成聚合物CR，与胺类聚合物CS复配制备活性染料耐氯固色剂 CRS，用于棉活性染料染色布固色整理，研究其耐氯性能。

The results showed MMT/amino-resin prepolymer can be obtained by the synthesis of MMT, amido materials and formaldehyde after sodium bisulfite process.

试验结果表明，用MMT、氨基物与甲醛进行合成，亚硫酸氢钠磺化得到MMT-氨基树脂预聚体，然后加入改性后的水玻璃得到最终产品。

Amino-sulfonic acid single aromatic ring type high range water reducer was synthesized form aminobenzene sulfonic acid, phenol and formaldehyde. The influence of monomers ratio, reaction temperature reaction time, pH value, the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

The proper synthetic technology are as follows: molar ratio of P-aminobenzene sulfonic acid/phenol/formaldehyde is 1∶2∶9, concentration of P-aminobenzene sulfonic acid is 0.4mol·L~-1 , pH of reaction system is 8.0, reaction temperature is 95℃ and reaction time is 3.5h. aminobenzene sulfonate ; dispersant ; ceramic grind additives

国外在磨矿行业已大量使用高效减水剂助磨并取得了显著效果，国内关于这方面的研究起步较晚，主要采用如碳酸钠、硅酸钠、磷酸钠等无机盐，而且也主要是用于有色金属选矿方面，在硅酸盐工业原料加工中有部分采

Quinone methides, generated in situ from the reaction of 4-hydroxycoumarin with benzaldehyde, formaldehyde and pentanal, underwent the Diels-Alder reaction with silyl enol ethers to give a series of 3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran derivatives in high yields.

通过4-羟基香豆素与苯甲醛、甲醛和戊醛缩合产生的quinone methide与烯醇硅醚的Diels-Alder反应，以较高产率合成了一系列含有硅氧基的3，4-二氢-2H，5H-吡喃并[3，2-c][1]苯并吡喃-5-酮衍生物。

Formaldehyde Sodium Bisulphite??

羟甲基磺酸钠 870-72-4 详细

In the second chapter , four new tetra-O-substitution of calix[4]arene derivatives are synthesized by condensation and two steps of substitution reaction from p-tert-phenol and formaldehyde.

本文第二章对Calix[4]arene进行了功能化，通过三步反应，合成了四种新的混醚。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。