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US5283126A Utilization of flexible coating on steel to impart superior scratch and chip resistance 失效
在钢上利用柔性涂层赋予优异的耐刮擦和抗碎屑性能

Utilization of flexible coating on steel to impart superior scratch and
chip resistance
摘要:
Electro-deposition-coated steel is top coated with a flexible coating formed of a polyester having --OH functionality, a polyacrylate having --OH functionality and melamine-formaldehyde resin to provide substantially a stoichiometric amount of reactive sites relative to the total amount of --OH functionality of the polyester and the polyacrylate. The flexible coatings exhibit superior chip and scratch resistance relative to rigid coatings of the type conventionally used in the automotive industry.
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