pu grafted polyacrylic acid copolymer 聚氨酯接枝聚丙烯酸共聚物
The results showed that the contents of gallic acid significantly enhanced and theanine distinctly reduced in Pu-Er tea.
结果表明，普洱茶中没食子酸的含量显著增高，而茶氨酸的含量则明显降低。
A series of rigid PU foams based respectively on maleopimaric acid ester polyols , rosin-maleicanhydride adduct ester polyols and turpentine-maleic anhydride adduct ester polyols were synthesized.
以马来海松酸酯多元醇、马来松香酯多元醇和松节油马来酐加成物酯多元醇为基，制备了硬质聚氨酯泡沫塑料。
Several important factors affecting the acid dyeing of sea-island composite fiber PU synthetic leather was studied.
海岛型锦纶超细纤维PU合成革采用酸性染料染色。
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