Long-chain alkyl amine

The present method consists of three steps as illustrated in Scheme 1. In the first step, monolayer films of polyamic acid long chain alkyl-amine salts 4 at the air-water interface are prepared.(9) Unexpectedly, the polyamic acid 3 itself, which possess hydrophilic carboxyl functions in the polymer backbone, did not afford a stable monolayer at the air-water interface. Introduction of a hydrophobic long alkyl chain into 3 was performed by mixing polyamic acids and longchain alkylamines. Polyamic acid salts 4, thus obtained, afforded very stable monolayer films at the air-water interface. In the second step,(10) the polyamic acid salt monolayer films are successfully deposited on appropriate plates such as glass, quartz, or silicon wafer. Finally polyimide multilayer films are obtained by treatment of polyamic acid salt multilayer films on the plates with a mixture of acetic anhydride and pyridine. 

Figure 4 a) Silica layers with intercalated long chain alkyl amine, b) tetraethylorthosilicate addition, c) calcined/Si02 pillared ca. 

Carrier LCAA (long-chain alkyl-amine) CPG... 

Disinfectants based on long-chain alkyl amines as active ingredients to be used in the food industry, e.g. in bottling plants, are described by Falter et al, (1991). 

The ALKAQUAT quaternary compounds are cationic surfactants derived from long chain alkyl amines. 

Understanding the adsorption of long-chain alkyl amines and their surface structure is significant for improved nonsulfide flotation technology and the development of new flotation chemistry for the flotation of nonsulfide minerals. In the middle of the twentieth century, Gaudin and Fuerstenau first studied the use of long-chain alkyl amines for the flotation of oxide minerals, particularly the flotation of quartz with primary dodecylamine (DDA) (Gaudin and Fuerstenau 1955). Their studies showed that the collector adsorption density and zeta potential at the solid-water interface are... 

Derivatives of EMA resins are useful in both the oil field and as additives for fuel oils or lubricants. As additives for oil well drilling muds, the derivatives help reduce water loss due to filtration and perform as viscosity control agents. Long-chain alkyl amine derivatives are useful as antistatic additives for fuel oils. Antistatic coatings are also readily available for many other applications. Aqueous solutions of EMA resins are claimed to be useful in foam systems for dust control. For example, aqueous solutions of the resins can be used to trap 90-95% of the airborne dust generated in a coal cutting laboratory. ... 

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