amphoteric
Abstract: Cationic and amphoteric flocculants have many advantages.
阳离子型高分子絮凝剂及两性高分子絮凝剂具有许多优点
The autoprotolysis exists in amphoteric compounds too.
在两性化合物中,也存在着质子自递现象。
Proteins behave either as acids or bases and are said to be amphoteric.
蛋白质习性又像酸又像碱，因此说它是两性的。
Their oxides are frequently amphoteric , and react with both acids and alkalis.
他们的氧化物通常是两性的，和酸、碱都能反应。
Moreover,the development trends of amphoteric starch in future are prospected.
此外,对两性淀粉在未来的发展方向予以展望。
Reactions in liquid HF are known that illustrate also amphoteric behavior, solvolysis, or complex formation.
已知在液态HF中，也能说明两性行为溶剂分解或络合物形成作用的反应。
But the macromolecule amphoteric polyacryamide effecting on the drainage was much worse than that on retention.
但高分子的聚丙烯酰胺的助滤效果远不及助留效果好。
Environment aspect of amphoteric surfactants such as biodegradation and fish toxity was introduced in detail.
同时，对两性表面活性剂的生态性质.如生物降解性、鱼毒性等也进行了较为详细的介绍。
The structure and properties of macroporous strong base - weak acid amphoteric resin were studied by using IR and DTA.
利用红外光谱、差热分析对大孔强碱弱酸两性树脂的结构与性能作些探讨。
Amphoteric monomer is prepared with acrylic acid,dimethylamine,and chloro-ethanol by Mannich reaction.
以丙烯酸、二甲胺、环氧氯丙烷为原料,通过曼尼希反应制得两性离子单体。
The applications of products from amino-acid imidazoline amphoteric surfactant were recommended.
介绍了以它为原料制备产品的用途。
The results indicate that amphoteric could increase the sizing degree of eucalyptus chemimechanical pulp significantly.
研究了两性淀粉对桉木化机浆中性施胶、桉木化机浆的增强和助留的影响。
Biological activities of amphoteric surfactants to higher or lower organisms were introduced.
介绍了两性表面活性剂的生理活性。
A novel method for synthesizing the amino-sulfonic acid series amphoteric surfactants was developed.
给出了氨基磺酸系两性表面活性剂的一种新合成方法。
The effect of macromolecule amphoteric polyacryamide used as retention and drainage aids in nonwood fiber is studied.
在非木材草类纤维中加入两性高分子聚丙烯酰胺助留、助滤剂,对其效果进行了探索。
Isoelectric focusing A technique used in ELECTROPHORESIS to separate amphoteric molecules (able to combine with either acids or bases).
等电点聚焦：是一种利用电泳技术分离两性分子（能与酸或碱结合）的技术。
The length of alkyl, carbon chain about betaine type amphoteric surfactant affects its surface activity and other properties.
摘要甜菜碱表面活性剂的烷基碳链的长度对其表面活性及其它性质有不同程度的影响。
This kind of amphoteric polyurethane (APU) can form stable nanometer sized waterborne dispersions in acid or alkaline media.
同时还测定了APU的等电点和水分散液中APU分子链上可离子化基团的含量 ;
The new opinion to explain why amphoteric surfactant is the best lime soap dispersing agent was given from the view point of mixed micelle theory.
从混合胶束理论出发，对两性表面活性剂是比其他类型表面活性剂更优秀的钙皂分散剂这一事实，作者提出了新见解。
Wastewater from city was treated using primary flocculant polyferric sulfate ( PFS) and coagulant aid amphoteric sesbania gum (ASG).
研究了以聚合硫酸铁为主凝剂、两性田菁胶(ASG)为助凝剂处理城市生活废水的各种影响因素。
The length of alkyl carbon chain about betaine type amphoteric surfactant affects its surface activity and other properties.
甜菜碱表面活性剂的烷基碳链的长度对其表面活性及其它性质有不同程度的影响。
A new method for preparing amphoteric polyacrylamide(APAM),a kind of flocculant,by modification of nonionic polyacrylamide was developed.
开发了一种对非离子聚丙烯酰胺进行改性制备两性聚丙烯酰胺(APAM)絮凝剂的新方法。
Abstract This paper introduces the synthesis, applied technology and properties of amphoteric polyurethane retanning agent UT.
本文介绍了UT-两性聚氨酯复鞣剂的合成、应用工艺及性能特点。
Amphoteric polyacrylamide as paper reinforcer was synthesised with G-acrylamide, acrylic acid, acrylic nitrile, accelerant-MPA as raw materials.
以丙烯酰胺、丙烯腈、丙烯酸和促进剂MPA为原料合成两性聚丙烯酰胺纸用增干强剂,并讨论了各反应条件对产品性能的影响。
The reaction product of ethanolamine with maleic anhydride is one of the intermediate for preparing dye-aidding amphoteric polymer tanning agents-PT.
马来酸酐与乙醇胺的酰化反应产物是制备PT系列助染型两性鞣剂的中间体之一。
The influence on desalination and anti-pollution by the different cross-linking degree of Amphoteric resins was investigated .
用互贯法合成了不同交联度的强碱弱酸两性树脂,考查了树脂交联度对两性树脂脱盐抗污染的影响。
Amphoteric surfactants do not display significant mutation to higher mammals but exert stronger disinfecting influence on microorganisms.
两性表面活性剂对高等生物的致突变作用不明显，但对低等生物却具有较强的杀灭作用。
The effects of cationic,anionic,amphoteric and nonionic surfactants on the colloid stability of water-based inks were studied.
对阳离子、阴离子、两性和非离子表面活性剂对水性油墨胶体稳定性的影响进行了探讨。
Lecithin,which has potential market in the fatliquoring process in leather-making industry,is a natural amphoteric surfactant with abundant resource.
卵磷脂是一种来源丰富的天然两性表面活性剂,可用于制革工业的加脂过程,有较好的应用前景。
Use of the amphoteric collectors can improve the selectivity of fluorite-calcite separation and the biological esters can remove effectively silica...
使用两性捕收剂能改善萤石-方解石分离的选择性,而生物脂类则可有效排除萤石精矿小的二氧化硅。
The amphoteric surfactants used in leather industry are mainly aminophenol, lycine, imidazoline, polymeric and amphoteric surfactants.
皮革工业中常用的两性表面活性剂主要有氨基酸型、甜菜碱型、咪唑啉型及高分子两性表面活性剂。
The octodecyl(2 sulfite)ethyl dimethyl ammonium is a new sulfie inner ester amphoteric surfactant and is synthesized from N, N dimethyl octodecyl amine and ethylene sulfite.
由N，N-二甲基十八烷基胺和乙撑亚硫酸酯反应合成的十八烷基（2-亚硫酸）乙基二甲基铵是一种新型的亚硫酸内酯型两性表面活性剂。
The mildness, cleaning and improved wetting properties, low foaming characteristics,, stability in the presence of alkalis and acids of amphoteric surfactants are related here.
论述了两性表面活性剂的温和性、去污性以及高润湿、低发泡和在碱性或酸性条件下稳定的特性。
Dodecyldimethylamine, epoxy chloropropane and phosphorus oxychloride were taken as raw materials to synthesize a novel gemini amphoteric phosphate surfactant.
以十二烷基叔胺、环氧氯丙烷和氧氯化磷为原料合成了一种新型双子两性磷酸酯表面活性剂。
General properties of amphoteric surfactants were introduced such as rheological property,hydrotropic property,lime soap dispersing ability and hard water-resistance.
介绍了两性表面活性剂的流变性、水溶助长性、钙皂分散性和抗硬水性等一般性质。
The fungus to 5-fluorine cytosine (5-FC), amphoteric mildew element B (AMB), system mycetin (NYS), miconzole (MIC) is sensitive, Sensitive rate above 80%.
真菌对5-氟胞嘧啶(5-FC)、两性霉素B(AMB)、制霉菌素(NYS)、咪康唑(MIC)较敏感，敏感率均在80%以上；
The valuation of amphoteric figure in TV advertisement originality is the difference sexuality of society and culture of male of female which play in it.
电视广告作品两性形象差异所持的价值判断,其着眼点主要是男女两性的社会性别和文化性别。
A new colloid titration method for analyzing the degree of substitute (DS) of amphoteric starch with carboxylic and quaternary ammonium groups is first developed in this work.
摘要首次提出了用胶体滴定法测量季铵盐羧酸型两性淀粉的阴、阳离子取代度。
The new opinion to explain why amphoteric surfactant is the best lime soap dispersing agent was given from the view point of mixed micelle theory.Environmen...
从混合胶束理论出发,对两性表面活性剂是比其他类型表面活性剂更优秀的钙皂分散剂这一事实,作者提出了新见解。
Cation and amphoteric polyacrylamide coagulants have been receiving increased attention of both domestic and foreign researchers because of the many advantages they offer.
阳离子及两性聚丙烯酰胺类絮凝剂具有很多优点,近年来得到国内外学者的广泛重视和开发应用。
Amino-acid amphoteric surfactant,a kind of green surfactant,has been used in leather industry more and more because of its innocuity,biodegradation and blending ability.
氨基酸型两性表面活性剂是一种以氨基酸为基础的环保表面活性剂,其良好的无毒、生物可降解和配伍性能,越来越多地被应用到皮革工业中。
The benzidine yellow G pigment was modified with amphoteric surfactant and fatty acid, and the flowing, wetting and dispersing properties of the modified pigment were determined.
本文以两性表面活性剂和脂肪酸对联苯胺黄G表面改性，测定了颜料的流动性、润湿性和分散性。
The present article discloses several cationic flocculant and amphoteric flocculants and analyses trend of the development on cationic and amphoteric flocculants.
本文通过对几种阳离子型高分子絮凝剂及两性高分子絮凝剂的介绍,分析了它们的发展现状与方向。
In this paper,the classification and synthesis methods of amino-acid type amphoteric surfactant,and the progress of its application in leather industry were introduced.
本文综述了氨基酸型两性表面活性剂应用于皮革中的研究动向,并重点介绍了其分类及合成方法。
The univalent radical or group OH, a characteristic component of bases, certain acids, phenols, alcohols, carboxylic and sulfonic acids, and amphoteric compounds.
羟基单价原子团或羟团，是碱、一些酸、酚、醇、羧酸和硫酸及两性化合物的主要成分
We have determined surface tension, cmc, isoelectric zone, foam property, wetting property, emulsification, Krafft point, thickening property and hard waterresisting property of the four kinds of amphoteric surfactants (BS 12, OB 2, LAB, LAO).
本文测定了四种两性表面活性剂（BS－12，OB－2，LAB，LAO）的表面张力、临界胶束浓度（cmc）、等电区、发泡能力、润湿性、乳化作用、Kraft点和增稠性能；
Aesthetics between sexes or the amphoteric esthetics are a common mainstream preposition in the Chinese and foreign history of literature, but it is neglected since long ago in the history of literature.
摘要两性审美或者两性美学是中外文学史上一个共同的主流命题，但是长期以来被湮没在文学史中。
In this paper applications and developing process of acrylic resin as retanning agent were discussed, and the synthesis and development of amphoteric acrylic polymer syntan were discussed.
摘要本文讨论了丙烯酸树脂复鞣剂的应用现状及其发展前景，并讨论了两性丙烯酸类树脂鞣剂的合成方法和发展过程。
There are four types of surfactants which could be synthesized from rosin and modified rosin, such as amphoteric surfactants, anionic surfactants, cationic surfactants and nonionic surfactants.
文章综述了国内外近年来以松香和改性松香为主要原料合成表面活性剂及其应用方面的研究进展,分别讨论了这些表面活性剂在使用过程中的主要优势和存在问题。
A new amphoteric amino-resin retanning agent suitable for leather retanning was synthesized using choroactic acid, aniline, urea, dicyandiamide, melanine and formaldehyde as the raw materials.
以一氯乙酸、苯胺、尿素、双氰胺、三聚氰胺和甲醛为原料合成了适用于皮革复鞣的新型两性氨基树脂复鞣剂。