这可用脲键比氨酯键有较好的相分离和较高的熔化温度来说明。
The results can be explained in terms of better phase separation and higher melting temperatures of the urea linkages over the urethane linkages.
由于在共混物中引入了芳香族氨酯键，增加了醇酸树脂漆膜的附着力、硬度、固化速度及表面能。
The introduction of polyurethane groups to the blend improved the adhesivity, hardness, curing speed and surface energy of alkyd resin.
由苯-1，2，4-三羧酸-1，2-酐和羟乙基哌嗪合成酰胺键、叔氨和酯键交替排列的水溶性超支化聚合物。
Synthesis of Water-soluble Hyperbranched Polymer with Alternating Amido, Tertiary Amino and Ester Units from Benzene-1,2,4-tricarboxylic Acid-1,2-anhydride and N-(2-Hydroxyethyl)piperazine.
由苯-1，2，4-三羧酸-1，2-酐和羟乙基哌嗪合成酰胺键、叔氨和酯键交替排列的水溶性超支化聚合物。
Synthesis of Water-soluble Hyperbranched Polymer with Alternating Amido, Tertiary Amino and Ester Units from Benzene-1,2,4-tricarboxylic Acid-1,2-anhydride and N-(2-Hydroxyethyl)piperazine.
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