1) preparatory response
预备反应
2) preparative supply
预备供应
4) response preparation
反应准备
5) prepolymerization reaction
预聚反应
1.
A kind of waterborn polyurethane is synthesized by the reaction of diisocyanate with polyethylene glycol at the presence of end capping reagent;The factors that affect the blocking reaction and prepolymerization reaction were investigated.
以二异氰酸酯、聚醚多元醇为原料,利用二异氰酸酯和聚乙二醇在封端剂的存在下合成了一种水性聚氨酯;探讨了影响预聚反应和封端反应的因素。
2.
The influence of reaction temperature, used solvents and catalysts on the prepolymerization reaction was investigated.
研究了反应温度、溶剂、催化剂及用量对预聚反应的影响。
3.
The results indicated that the optimum reaction temperature of prepolymerization reaction was 75℃,the maximum reaction temperature of prepolymer was between 60℃ and 80℃,the quantity of hydrophilic chain extender was equal to 5% of feedstocks.
以甲苯二异氰酸酯(HDI)、聚酯多元醇和二羟甲基丙酸(DMPA)为主要原料合成水性聚氨酯固色剂,研究了反应温度、聚酯多元醇、有机溶剂、亲水扩链剂等对预聚反应的影响。
6) prepolymerization
预聚反应
1.
Research of reaction conditions on prepolymerization of polyester anionic waterborne polyurethane emulsion;
阴离子水性聚酯聚氨酯乳液预聚反应条件的研究
补充资料：士兵预备役(见预备役)
士兵预备役(见预备役)
reserve duty of the enlisted
shibing yubeiyt士兵预备役(resery。du:y。fthe enlisted)见预备役。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条