椰油酸单乙醇酰胺磷酸酯的制备及性能研究

以椰油酸甲酯、单乙醇胺，Ｐ２Ｏ５等为原料制备一种新型阴离子表面活性剂－烷醇酰胺磷酸酯盐。初步探讨了工艺条件，测定了其物化性能。     

Statistical studies of branched ester latex and paint properties

Vinyl versatate, butyl acrylate and 2-ethylhexyl acrylate were compared as comonomer, for colloid-stabilized vinyl acetate latex polymers to assess their impact on latex coating properties. Vinyl versatate afforded advantages in scrub resistance, gloss, hydrophobicity and higher glass transition temperatures. Butyl acrylate developed better wet adhesion efficiency, gel content and hiding efficiency. 2-Ethylhexyl acrylate offered performance comparable to butyl acrylate in hiding efficiency, lowering copolymer glass transition temperatures, and gloss development. Combinations of these monomers, in many instances, afforded a better balance of performance properties than individual monomers alone. In the subject study, a simplex-centroid design was utilized to statistically map polymer compositions for determining the effect of comonomer composition on latex and paint film properties. In addition to developing contour maps of polymer and paint properties as a function of composition, a technique for studying structure-property relationships is presented.     

Facile optical resolution of amino acid esters via hydrolysis by an industrial enzyme in organic solvents

Racemic amino acid esters were optically resolved via hydrolysis in organic solvents by the catalysis of an industrial alkaline protease, “Alcalase”. The products which were composed mainly of L-amino acids were insoluble and easily separated by filtration. The activity of the enzyme and enantiomeric excess of the products were significantly dependent on the nature of solvent and the water content in the reaction media. Generally, high values of enantiomeric excess were obtained at low water contents. Many natural and unnatural amino acids were resolved by this method.     

Use of ultrafiltration for preparing improved tomato pulp

The characteristics of high-quality tomato pulp (commercial def.: crushed or diced tomatoes with about 30% tomato juice as packing medium) canned with tomato juice pulp enriched by ultrafiltration as packing medium were compared with those covered with conventional vacuum-concentrated juice.
Both hot- and cold-break products were prepared and those containing 20% serum-reduced packing juice proved to be the best, showing no signs of syneresis on storage and with improvements in sensory properties, colour and non-enzymatic browning; some volatile components were reduced.     

300MW燃油直流炉机组的给水联合处理

本文介绍了给水联合处理的原理及其优点以及在望亭电厂的1台300MW亚临界燃油直流炉上进行这项处理的工业性试验的过程、效果及存在问题。最后作者对给水联合处理能否取得成效的关键提出了意见。     

银川市室内环境空气污染现状及治理措施的初探

本文通过对银川市室内环境空气污染现状的调查与检测,阐述了室内环境空气污染的来源及危害,提出了污染治理措施。     

Lutein and lutein esters in marigold flowers by high performance chromatography

Lutein and lutein esters in marigold flowers was quantitatively determined by high performance chromatography (HPLC) with ODS-C18 column. A mixture of CH3CN-CH3OH-CH3COOCH2CH2 with volume ratio of 55:1:44 was used as mobile phase at a flow rate of 1.0mL/min and detection was carried out at 480 nm. The column temperature was about 20℃. The contents of lutein and lutein esters were determined by analytical curve of lutein since lutein and lutein esters have the same spectral characteristics. Determination results of hexane extracts and saponified samples of lutein show that the saponification transforms the esters into free lutein. The increase of the content of dipalmitate and palmitate stearate reveals that the reaction includes transesterifications.     

水吸收-催化燃烧技术处理PET聚酯废气的中试研究

应用水吸收—催化燃烧技术处理PET聚酯生产中排放的含乙二醇、2—甲基—1，3—二氧戊环、乙醛等废气。水吸收可以有效脱除高沸点的乙二醇，通过对乙醛的吸收、解吸作用使废气的总烃浓度得到均匀化处理；采用Pt／Pd／CeO2蜂窝状催化剂，在反应器床层空速40000h^-1，人口温度250℃，人口总烃浓度3522—5666μL/L的条件下，反应器出口总烃浓度54—84μL/L，乙醛浓度3—11μL/L，总烃去除率达到97．6％一98．9％，净化后气体符合国家排放标准。     

Determination of the content of wax esters in some sea foods and their molecular composition. A comparison with ω-3 enriched wax esters

Wax esters enriched in ω-3 fatty acids have been recently shown to be readily absorbed by rats after dietary supplementation. Wax esters are less prone to oxidation and can be better formulated than liquid ω-3 derivatives. All these characteristics suggest a possible use of wax esters enriched in ω-3 as food supplements. However, some naturally occurring wax esters are defined as scarcely digestible (jojoba oil, spermaceti). On the other hand, wax esters have been found in several sources of marine origin, which can enter normal foodstuff. In order to better understand the digestibility of wax esters, we have analysed some foods from marine sources. The content of triglycerides and wax esters of the foods has been determined. Moreover, wax esters have been analysed for their composition in alcohols and fatty acids. Wax esters have been shown to be a part of the neutral lipid extract of the foods analysed. Their content, if compared with the content in triglycerides, shows striking differences. In the case of two botargo preparations, it has been shown that wax esters are more than 90% of the total neutral lipid extract. The content of fatty acids and alcohols found in the foods analysed is consistent with published data.     

有机硅丙烯酸酯增深剂的制备及应用

由乙烯基三乙氧基硅烷与KH-550、丙烯酸酯类单体在阴/非离子表面活性剂存在下，通过乳液聚合制得带蓝光的半透明有机硅丙烯酸酯乳液．该乳液粘度小，有机硅质量分数15％，总固体质量分数30％，该增深剂既可单独使用，也可与氨基硅油乳液复配，经蓝色16电力纺、黑色03双绉等真丝产品增深，其增深度可达15％，但亲水性有所下降．