Amines polyamines

In the case of lubricant dispersants, the polar part is organic (amine, polyamine, heterocyclic nitrogen compounds, polyglycol). 

A diesel fuel stabilizer containing a blend of amines, polyamines, and alkyl ammonium alkyl phosphate as specified under MIL-S-53021 is recommended for federal diesel fuel oil. This stabilizer is to be used at a treat rate of 25 lb/1,000 barrels. It is not intended for use in routine applications, but for situations where increased stability protection is required. Typical applications include fueled equipment undergoing long-term storage in a warehouse or depot, prepositioned equipment or equipment maintained in a high-temperature environment. 

The best known and most widely used fluorescence method was developed by Roth and Hampai [35] for the detection of primary amino acids, and was described in Section 4.9.2. It is based mainly on the reaction of a-amino acids with o-phthaldialdehyde (OPA) and 2-mercaptoethanol to yield an intensively blue-fluorescing complex. Even at room temperature, the reaction occurs within seconds. At an excitation wavelength of 340 nm and an emission wavelength of 455 nm this method has a detection limit in the lower pmol range. The derivatization with o-phthaldialdehyde applies to all compounds carrying a primary amino group. This includes the ammonium ion, primary amines, polyamines, and peptides. 

Amines, polyamines, and aminophenols that can quinonize are similarly amenable to this reaction if an oxidizing agent is added 191 4-amino-3-hydroxy-1-naphthalenesulfonic acid was obtained from 1-naphthylamine,192 and a monosulfonic acid from / -phenylenediamine.193... 

Selective protection of amines. Polyamines undergo trifluoroacetylation only at the... 

The caticHiic surfactants are used infrequently in emulsion polymerization t pli-cations since they are not compatible with the anionic surfactants and with the (typically) negatively charged latex particles. These surfactants are usually of the following types salts of long chain amines, polyamines and their salts, quaternary ammonium salts (e.g., hexadecyltrimethyl ammonium bromide), polyoxyethyle-nated long-chain amines and their quatemized doivatives, and amine oxides [89]. 

Regarding cationic emulsions, emulsifiers are mostly monoamines, diamines, amido-amines, polyamines or imidazolines (Hoiberg 1965), which are dissolved with acids, mostly hydrochloric or acetic, before emulsification. The chemical reaction with addition of hydrochloric acid is of the following formula ... 

Anti-stripping agents are chemical substances that have a similar composition to emulsifiers and are divided into (a) anionic type, such as organic acids (creosote) and fatty acids (oleic acid, stearic acid, pine pitch, etc.), and (b) cationic type, such as amines (simple amines, diamines, tertiary amines, polyamines and imidazolines) and salts of quaternary ammonium. 

The number of nitrogens in the chain can vary from two on up. In many cases the nitrogen-carbon bond is an integral part of the polymer network. There are more than two carbons between nitrogens in some cases, and the carbons may carry other substitutions. The actual ionogenic functionality is a mixture of primary, secondary and tertiary amines. Polyamine resins made by condensing phenol, formaldehyde and polyamine were among the first commercial resins. Other methods of manufacture include the reaction of a polyamine with a chloromethylated styrene-divinyl-benzene copolymer, and condensation of epichlorhydrin with ammonia or polyamines. 

Kalac P., Abreu Gloria M.B. Biogenic amines in cheesess, wines, beers and sauerkraut. In Biological Aspects of Biogenic Amines, Polyamines and Conjugates, Dandrifosse G. (ed.). Transworld Research Network, Kerala, India, pp. 267-309 (2009). 

These epoxy resins can be cured in a two pack system using amines, polyamines, polyamides, or acid anhydrides. Aliphatic amines produce faster cures at room temperature than aromatic amines. 

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