发明授权
US2870117A Coating composition comprising an epoxy resin and an aldehyde-reacted polymer of acrylamide and metallic surface coated therewith 失效
涂料组合物包含环氧树脂和丙烯酰胺的醛反应聚合物和涂覆有金属表面的金属表面

Coating composition comprising an epoxy resin and an aldehyde-reacted polymer of acrylamide and metallic surface coated therewith
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