EVOH ethylene-vinyl alcohol

A kind of highly effective formaldehyde inhibitor,polyvinyl acetal was prepared from acetic acid,ethylene and acetaldehyde.

采用醋酸乙烯酯和乙醛为原料,合成了高效甲醛阻聚剂———聚乙烯醇缩乙醛。

The polyvinyl formal was prepared via acetalation from polyvinyl alcohol and formaldehyde in water-solution under the condition of pH value was 1.

5~2的条件下,以聚乙烯醇和甲醛为原料,在水溶液中发生缩醛反应制备聚乙烯醇缩甲醛胶,然后向胶中添加适量的尿素和分散助剂PAAM/COB,经调配得到新型水溶性聚乙烯醇缩甲醛涂料。

In accordance with the princiole that in acid media the condensation reaction of hydroxylaldehyde is inversible, a way is given for the regeneration of the gel formed in the process of preparing polyvinyl formal.

根据在酸性介质中羟醛缩合反应是可逆的原理,对聚乙烯醇缩甲醛的制备过程中出现的凝胶进行再生处理,减少了原料浪费。

polyvinyl acetal resin

聚乙烯醇缩乙醛树脂

polyvinyl formal wire

聚乙烯醇缩甲醛绝缘线

pelyvinyl formal fibre

聚乙烯醇缩甲醛纤维

polyvinyl butyral cementing agent

聚乙烯醇缩丁醛粘合剂

Study on Application of Crotonaldehyde in Adhesives of Poly (Vinyl Acetals);

丁烯醛在聚乙烯醇缩醛胶方面的应用研究

polyvinyl formal high strength wire coating

聚乙烯醇缩甲醛高强度漆包线漆

straw green epoxy polyvinyl butyral enamel

草绿环氧聚乙烯醇丁缩醛磁漆

Modified Polyvinyl Formal Cement Adhesive by Epoxy Resin

环氧改性聚乙烯醇缩甲醛水泥胶粘剂

THE PREPARATION AND APPLICATION OF MODIFYING POLYVINYL FORMAL ADHESIVE FOR BUILDING ENGINEERING

改性聚乙烯醇缩甲醛胶的合成及应用

PREPARATION OF BAMBOO CHARCOAL/POLYVINYL FORMAL COMPOSITE MATERIAL

竹炭/聚乙烯醇缩甲醛复合材料的制备

Preparation of Novel Polyvinyl Formal Composits

新型聚乙烯醇缩甲醛复合材料的制备

Preparation of Water Soluble Polyacetal by Condensation of Polyvinyl Alcohol with Glyoxal

水溶性聚乙烯醇缩乙二醛胶粘剂的制备

Study on the Factors Affecting Free Formaldehyde in Poly(Vinyl formal) Resin

聚乙烯醇缩醛树脂中残留甲醛含量的影响因素

Kinetic Study on Production of PVB by Alcohol Method

醇法生产聚乙烯醇缩丁醛的动力学研究

testing methods for polyvinyl butyral

聚乙烯缩丁醛试验方法

POLYVINYL ACETAL PAINTS AND AD HESIVES-CALCULATION OF ALDEH YDE AMOUNT AND DETERMINATION OF ACETAL LEVEL

聚乙烯醇缩醛类涂料、粘合剂生产中醛用量的计算及缩醛度的测定

Study on Processing Technology and Property of PVB Film

聚乙烯醇缩丁醛薄膜加工工艺及性能的研究

Process Developent of PVB Power Production in Homogeneous Phase Method;

均相法生产聚乙烯醇缩丁醛干粉工艺开发