New US Patent on Rust Coatings Granted

US Patent on Coatings that Arrest Rust Granted to 澳门买球排行App

美国专利8,927,649 was 奖ed to 澳门买球排行App on January 6, 2015. 美国专利8,927,649 covers of a film forming pe净rant 涂层 with a high cross-link density that arrests 腐蚀 on 生锈y substrates.

Patent Abstract: A one part, storage stable polymerizable formulation is provided that includes an ethenically unsaturated polymerizable compound intermixed with a free radical polymerization initiator and an organic solvent. The organic solvent provides storage stability and upon evaporation of the solvent, the rate of polymerization of the compound accelerates independent of addition of a second part. The formulation includes at least 30 total weight percent solids upon cure. Optional additives to the formulation include at least one of a cure accelerator, 一个填料, a plasticizer, 一个着色剂, and a cure inhibitor. A process for forming a polymerized 涂层 on an article involves the application of this formulation to the substrate of an article and allowing sufficient time for the solvent to evaporate to form the polymerized 涂层 on the article. The substrate of the article forms a 腐蚀 barrier even without prior removal of a native 腐蚀 layer on a surface of the substrate of the article.

Understanding Corrosion Inhibitive Pigments

The annual cost of steel 腐蚀 is estimated to be over $400 billion in the United States and $2 trillion globally. Corrosion is a process where the metal can be degraded by electrochemical and/or chemical processes. This article will discuss the use of lead- and chrome-free 腐蚀 inhibitive pigments in 涂料 where 腐蚀 is primarily from electrochemical processes. Accordingly, the correct use of 腐蚀 inhibitive pigments can be of enormous economic value.

Ron Lewarchik is a contributing author to UL Prospector and publishes articles monthly. Please read on for his expert findings on “Understanding Corrosion Inhibitive Pigments”:

Metals desire to be in their most thermodynamically stable state, 哪一个, in simplified terms, is the naturally occurring state of matter in its lowest energy state. Metals ordinarily exist naturally as oxides (e.g. iron oxide, aluminum oxide, zinc oxide, because oxides represent their lowest energy state. Corrosion is an electrochemical deterioration of a metal due to the reaction with its environment to transform the metal into its lowest energy state. Oxidation occurs at the anode (positive electrode) and reduction occurs at the cathode (negative electrode). Corrosion is normally accelerated by the presence of water, oxygen and salts (particularly of strong acids).

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