马来酸

Green scale inhibiter ; polyaspartic acid ; maleic anhydride ; synthesis ; biodegradation

绿色阻垢剂；聚天冬氨酸；马来酸酐；合成；生物降解

New unsaturated polyester resin was prepared by using maleipimaric acid,biatomic acids and diatomic alcohols as raw materials.

以自制马来海松酸为原料之一，合成了新型不饱和聚酯树脂。

Mono-cinnamyl maleate was prepared by esterification of maleic anhydride and cinnamyl alcohol of 1 mol:2 mol at 95 ℃ for 2～4 h.Then added isomeric catalyst and mono-cinnamyl fumarate was made by reacting at 90 ℃ for 4 h.After methanol (methanol:mono-cinnamyl fumarate = 6 mol:1 mol) was added,the mixture maintained at 90 ℃ for 4.0 h to synthesize CMF.

合成试验表明：以摩尔比为1：2的马来酸酐与肉桂醇在95 ℃醇解反应2～4 h后加入异构化催化剂，90 ℃转型反应4 h后，添加6倍摩尔质量的甲醇，在90 ℃恒温反应4 h，反丁烯二酸桂醇甲酯的合成产率较高。

The low phosphate scale and corrosion inhibitor consists of hydroxyl ethylidene bisphosphoric acid in 0.5-1 mg/l, hydrolyzed polymaleic anhydride in 0.5-2 mg/l and polyasparic acid in 1-2 mg/l, with the total concentration being 3 mg/l.

还含有0.5～2mg/L的水解聚马来酸酐和1～2mg/L的聚天冬氨酸，低磷阻垢缓蚀剂的总质量分数之和为3mg/L。

In addition, the viscoelastic effects on the phase separation, the chemorheology and the critical gelation of the blends during isothermally curing were also studied.

第二部分研究了双酚A型氰酸酯树脂改性二苯甲烷型双马来酰亚胺树脂体系中的固化反应机理及其对改性体系结构的影响。

The graft polymerization of maleic a...

研究了马来酸酐在PE颗粒中的接枝反应，考察了反应条件对接枝率和酸值的影响。

The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer.

以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸PASP

Beijing University of Chemical Technology, Beijing 100029, ChinaAbstract: The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer. The infrared spectrogram and molecular weight of synthetic products are determined.

摘要］以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸，对其测定了红外谱图和相对分子质量，研究了可生物降解性、阻垢性能及阻垢性能与相对分子质量的关系。

The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer. The infrared spectrogram and molecular weight of synthetic products are determined.

以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸，对其测定了红外谱图和相对分子质量，研究了可生物降解性、阻垢性能及阻垢性能与相对分子质量的关系。

Optimal reaction conditions were as follows: PAAS and SMA at weight ratio of 4:1, stirring for emulsifying at speed of 1500 rpm and last 60 min, acidifying for 90 min, and the curing temperature under 50℃for 90 min.

优化配方及工艺条件为：聚丙烯酸钠和苯乙烯-马来酸酐按4：1混合作乳化剂，1500rpm搅拌，分散乳化60min，酸化90min，50℃固化90min作为制备二甲戊乐灵微胶囊的优化工艺条件，在此条件下可以得到平均粒径为9.6μm、粒度分布均匀、包封率在99%以上的球形微胶囊。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。