Amines types

Antidegradants. Amine-type antioxidants (qv) or antiozonants (qv) such as the phenylenediamines (ppd) can significantly decrease scorch time. This is particulady tme in metal oxide curing of polychloroprene or in cases where the ppd had suffered premature degradation prior to cure. 

Aftertreatments include resin finishes, which improve fastness properties, and dye-fixing agents of the epichlorhydrin—organic amine type. These agents react with the dye to give condensation products that are not water soluble and hence more difficult to remove. 

Health Hazards Information - Recommended Personal Protective Equipment Amine-type canister goggles or face shield rubber gloves Symptoms Following Exposure Vapors from hot liquid can irritate eyes and upper respiratory system. Liquid burns eyes and skin. May cause sensitization of skin General Treatment for Exposure INHALATION remove victim to fresh air INGESTION do NOT... 

Types of Amines Type General Formula Example... 

All neutralizing amines employed in water treatment formulations are based on single amine type or blends, drawn from this commercial stockpile. Unfortunately, they are not all drawn from a common class of amines, simply with progressively higher molecular weight or additional radical groups added instead they are drawn from a wide range of classes. For example,... 

Improved high-pressure liquid chromatography (HPLC) methods have been developed for the analysis of quaternary salt type corrosion inhibitors in brine waters [400]. However, these methods are not suitable for imidazolines and amido-amines. A method based on fluorescence detection has been described for the quantitative analysis of the imidazoline- and amido-amine-type corrosion inhibitors in both oil field water and crude oil samples by HPLC [1174]. 

R. M. Matherly, J. Jiao, J. S. Ryman, and D. J. Blumer. Determination of imidazoline and amido-amine type corrosion inhibitors in both crude oil and produced brine from oilfield production. In Proceedings Volume. 50th Annu NACE Int Corrosion Conf (Corrosion 95) (Orlando, FL, 3/26-3/31), 1995. 

Also known as hexamine, hexa or HMT, a once-popular aldehyde-amine type of accelerator for natural rubber, now used as a vulcanising agent for polyacrylate rubbers. 

Research work conducted at the University of Liege was carried out on several ore types that contained hemimorphite and smithsonite. The mercaptan-type collectors were effective with both minerals in the presence of sulphidizer. Although mercaptans floated oxide zinc minerals, the recoveries were not satisfactory. Later in the research work, amine-type collectors were introduced to flotation of oxide zinc minerals with significant improvement in metallurgy over that obtained with mercaptans. 

The third industrial blend presented here as an example belongs to the cationic surfactants of fatty acid polyglycol amine type with... 

The cationic surfactant mixture, which was also observed by FIA— MS(+) in the Saale River (Germany) but could not be separated under RP-Cis conditions, was classed as a cationic surfactant mixture of fatty acid ethoxy amine type with the general formula R-N H((CH2-CH2-OH)x)-(CH2-CH2-OH)yX- by FIA-MS-MS(+) [29], The CID spectrum of the parent ion at m/z 538 generated by FIA-MS-MS(+) resulted in a series of equally spaced product ions (A m/z 44) starting with 212 and ending at 520. Besides these product ions, alkyl- and ethoxylate fragment ions with low intensity were observed at 57, 71... 

Fig. 2.12.15. FIA-APCI-MS-MS(+) (CID) product ion mass spectrum of cationic surfactant compound (m/z 538) fatty acid polyglycol amine type observed in the Saale river, Germany (general formula R—N H((CH2—CH2—OH)x)—(CH2—CH2—OH)y X fragmentation behaviour of [M]+ parent ion at m/z 538 under CID conditions is presented...

Properties of the feed solution and the substance to be extracted will decrease the number of extractants that may be applicable. For example, in the extraction of metals, if no anionic metal species are present in the feed solution, there is little point in considering anionic (amine) extractants. On the other hand, if anionic metal species are present, then the amine type best suited to the extraction of the anionic species can be selected, knowing... 

Examples tertiary amine type imipramine, amitriptyline, dothiepin, clomipramine... 

For an amine-type anion exchanger both the Cu++ and Cu(NHs)4++ adsorbed ions had the same -factors and hfs intervals similar to those of group 3 above. 

For the vanadyl ion adsorbed on the various substrates examined, the g-factors were found constant, however, the hfs intervals varied, being largest on sulfonic acid-type cation exchangers, slightly smaller on charcoal and considerably smaller on an amine-type anion exchanger. 

What kind of business This depends largely on what kind of dope you plan to manufacture. Amine-type precursors go hand in hand with perfumery or dyes. Nitrating-type compounds (nitromethane, nitroethane) are also used as solvents, and rocket fuels. Indole has been used in perfumery. Tyrosine and tryptophan are nutrients added to feeds. Urea is a plant fertilizer and a feed additive. 

Primary amines. The nitrosation of primary amine type compounds yields small amounts of secondary amine type N-nitroso compound (14, 15, 16). The reaction mechanism is not well understood. 

Secondary amines. The reaction of secondary amine type compounds with nitrous acid (HO NO) has been reviewed extensively by Turney and Wright (17), Ridd (18), Scanlan (19) and Mirvish (20). In a system containing (HO NO) as the nitrosating agent, the possible nitrosyl carriers are (H2O NO), (NO2 NO) and (NO+). The reactivity of (NO+) is very low and it is not considered an effective nitrosating form. Nitrous acidium ion (H2O NO+) plays a significant role only at concentrated acidic condi tions. Therefore, it seems likely that at the dilute acidic conditions that are encountered in the environment, it is nitrous anhydride (N2O3 = NO2 NO) which nitrosates secondary amines. 

Tertiary amines. Tertiary amine type compounds, react with nitrous acid to yield secondary-amine type N-nitroso compounds. The myth that tertiary amines do not nitrosate to yield N-nitroso compounds, is a remarkable feat of misinformation that has persisted for over 100 years (23, 24, 25). 

Takemoto et al. were the first to report that hifunctional organocatalysts of the thiourea - tert-amine type efficiently promote certain Michael-reactions, e.g., the addition of P-dicarhonyl compounds to nitro olefins (Scheme 6) [43 5],... 

For the synthesis of a-aminocarbonyl compounds, a number of O-organylhydroxyl-amine-type reagents have been used. Several 0-alkylhydroxylamines la-e were screened for amination of a-lithiated carboxylic acids (Scheme 11) °. However, the yields are... 

The efficiency of the amination methodology of enolates with 0-phoshinylhydroxyl-amine-type reagents was further demonstrated by Boche and Schrodt in the high-yield amination of 0-(trimethylsilyl)cyanohydrin anions with 4c (Scheme 44)". 0-(Trimethyl-silyl)cyanohydrins prepared by treatment of aryl, hetaryl and conjugated aldehydes with trimethylsilyl cyanide were lithiated to the eniminates. This is a practical method that enables the easy conversion of aldehydes to iV,Ai-dimethylamides under mild conditions. 

Three versions of this concept have been used to prepare LB film containing MCs. In the first, pioneered by Fendler (13-16), a compressed Langmuir monolayer is used as a template for the preparation of Q-state particles. For instance, diffusion of H2S through a monolayer of dodecylbenzenesulfonic acid (17) or a bis amine type surfactant (14) into a Cdz+ solution resulted in the growth of Q-state CdS under the monolayer. The vertical dipping technique (Fig. 3.5.2) was then used to transfer the monolayer, with associated semiconductor, to a substrate to give multilayer LB films. 

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