A method for preparing cyano sulfonyl fluoride compounds is provided. Oxime ether compounds are used as free radical precursors, and under the condition of photocatalyst regulation, and in combination with the strategy of free radical sulfur dioxide insertion, the process involves photocatalytic oxidation, CC bond cleavage rings, free radical SO.sub.2 insertion and fluorination to achieve cyano/fluorosulfonyl reaction of oxime ether, yielding cyano sulfonyl fluoride products.

The present invention relates to cyclododecanone and a preparation method therefor. According to the present invention, a cyclododecanone preparation method capable of achieving a high conversion rate and minimizing unreacted materials and the production of reaction byproducts can be provided. In addition, the present invention implements a high conversion rate and selectivity despite a simplified process, and thus can be helpfully utilized in economical laurolactam production methods that are easy to mass-produce commercially. According to the present invention, the proportions of cyclododecanol, cyclododecadiol, and the like, obtained as reaction byproducts, in the final product can be drastically reduced, and cyclododecanone can be produced at a high conversion rate.

A powder coating composition comprising an acid functional polyester resin A formed by reacting one or more polyol constituents, wherein at least 90 mole % of the polyols constituents is neopentylglycol, with one or more poly acid constituents wherein at least 87 mole % of the poly acid constituents is isophthalic acid (IPA); wherein polyester resin A has an Acid Number (AN) of between 20 and 90 mg KOH/g; and a hydroxyl value of less than 50, preferably less than 15 mg KOH/g; a glycidyl functional acrylic resin B having a weight average molecular weight of between 2500 and 7000; a curing catalyst C capable of catalyzing the reaction between the polyester resin A and the acrylic resin B; and optionally -hydroxyalkylamide D.

There is provided a technique that includes: providing a substrate including a conductive film and an insulating film on a surface of the substrate; and forming an oxide film on a surface of the insulating film, among the conductive film and the insulating film, by supplying a halogen-free precursor, an oxidizing agent, and a catalyst to the substrate under a non-plasma atmosphere.