Effect of ratio of dimethylol propionic acid to polybutylene adipate glycol on Tg and basic properties of films was studied.

考察了二羥甲基丙酸/聚己二酸丁二醇酯二醇比例對Tg以及膜基本性能的影響97午夜。

A series of polyurethane anionomers were synthesized from isophorone diisocyanate, polyneopentanediol adipate and dimethanol propionic acid.

用異佛爾酮二異氰酸酯人人射人人操人人爽、聚己二酸新戊二醇酯和二羥甲基丙酸合成了負(fù)離子型聚氨酯離聚體亚洲欧美国产日韩综合久久。

The yield of iso amyl propionate was up to 91.8% when molar ratio of isoamyl alcohol to propionic acid was 3.0:1, mass ratio of catalyst was 2.5%, and reaction time was 2.0 hs.

在醇酸物質(zhì)的量比為3.01又色又猛又黄的视频，催化劑用量為反應(yīng)物料總質(zhì)量的2.5%精品国产91Av福利、反應(yīng)時2.0h一级黄色性交小视频，產(chǎn)品收率可達(dá)91.8%。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先將大分子二元醇與二端羥丁基聚二甲基硅氧烷的混合液脫水后加入二異氰酸酯免费看18禁全程高潮娇喘，反應(yīng)后加入二羥甲基丙酸www.插逼com、二元醇擴(kuò)鏈劑和催化劑二月桂酸二丁基錫，并用丙烯酸酯進(jìn)行稀釋永久网站操，反應(yīng)后降溫乳化午夜三级永久久久，用多元胺擴(kuò)鏈劑在水中進(jìn)行擴(kuò)鏈反應(yīng)，得到含有丙烯酸酯單體的硅氧烷改性聚氨酯分散體欧美性爱黄页，然后再通過加入引發(fā)劑過硫酸鉀進(jìn)行乳液聚合欧美特黄性爱视屏。

A salt or an ester of propionic acid .

高氯酸形成的一種鹽。

The influence factors such as molar ratio of hexyl alcohol to propionic acid,amount of catalyst, and reaction time on the yield of hexyl propionate were discussed.

以鎢硅酸為催化劑亚洲中文在线播放一区，通過丙酸和己醇反應(yīng)合成了丙酸己酯欧美日韩午夜精品，探討了醇酸物質(zhì)的量比、催化劑用量及反應(yīng)時間對酯化率的影響哟哟哟WWW高清在线观看视频。

In this paper, with 2-oxo-propionic acid salicyloyl hydrazone as a ligand, one calcium complex, three copper complexes and thirteen rare earth(RE=La, Ce, Pr, Nd, Sm, Eu. Gd, Tb, Dy, Er, Tin, Yb and Lu) complexes have been synthesized. The crystals of four complexes were obtained, and the crystal structures were determined by single crystal X ray diffraction. One of the crystals is calcium complex, the other are binary and trinary complexes of copper.

本文選用2-羰基丙酸水楊酰腙作為配體人与动牲交av免费，在水中分別與鈣一级人与嘼视频免费播放、銅、稀土(RE=La黄色网址在线免费播放、Ce免费看黄色女人片、Pr、Nd日本a网站在线看、SmA片勉费视频网站、Eu、Gd黄色视频一级黄、Tb黄片久久久久久久、Dy、Er亚欧A片视频在线观看、Tm欧美全网一级AA片片黄大片、Yb和Lu)的鹽反應(yīng)，共制得了17種未見文獻(xiàn)報道的配合物久操碎强奸，另外還培養(yǎng)了2-羰基丙酸水楊酰腙http://800av.com/、咪唑與銅、鈣的二元及三元配合物的四種單晶中文字幕Aⅴ无码一区二区三区，對La-Gd的稀土的配合物進(jìn)行了溶解熱的測定色哟哟网站www，并用Gauss-98軟件包對銅的配合物進(jìn)行了有關(guān)量化計算。

Seed: fatty oil, protein, vitamin B2, starch, pentosan, propionic acid, urea, sugar and so on.

種子：脂肪油免费观看全成年网站大全，蛋白質(zhì)个人上传网上性交毛片，維生素B2，淀粉欧美黑白配性交，戊聚糖操逼污视频网站，丙酸，尿素黄免费，糖等人人爽人人超人人高潮。

Except a certain influence for the propionic acid content, no significant difference was found that temperature fluctuation affected the acetic acid content.

溫度波動對乙酸含量基本沒有影響，而對丙酸的含量有一定影響日韩电影线上无码观看视频网站。

The invention belongs to the technical field of environmental protection and in particular relates to a method for utilizing the fermentation effect of microbe in remained sludge to increase the propionic acid content in organic acid which is produced under the normal temperature through replenishing carbohydrate and controlling the pH value when in reaction, the method takes the remained sludge of sewage treatment plants and mixture of urban putrescible organic waste which is produced in everyday life as raw materials.

本發(fā)明屬于環(huán)境保護(hù)技術(shù)領(lǐng)域无码天天av，具體涉及一種通過補(bǔ)充碳水化合物和控制反應(yīng)時的pH值，以污水處理廠的剩余污泥和日常生活中產(chǎn)生的城市易腐有機(jī)廢物的混合物為原料成年网站在线视频网站，在常溫條件下利用剩余污泥中微生物的發(fā)酵作用提高所生產(chǎn)有機(jī)酸中丙酸含量的方法思热在线视频精品免费观看。