Heteropolyacid amino resin catalyst as well as preparation method and application thereof
The invention relates to a heteropolyacid amino resin catalyst and a preparation method and application thereof.The preparation method comprises the steps that water-soluble heteropolyacid serves as a catalyst, urea, melamine and formaldehyde serve as raw materials to be subjected to copolymerizatio...
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Format: | Patent |
Sprache: | chi ; eng |
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