primary amine


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Related to primary amine: primary amide

primary amine

[′prī‚mer·ē ′am‚ēn]
(organic chemistry)
An amine whose molecular structure may be written as RNH2, instead of R1R2NH (secondary) or R1R2R3N (tertiary).
References in periodicals archive ?
In a competitive reaction between the primary aliphatic amine and the secondary amine with succinic anhydride, it could be observed that the primary amine was the most reactive.
It consists of montmorillonite treated with octadecyl amine, a primary amine base.
The epoxy prepolymer was DGEBA (DER 332 by Dow Plastics) and the curing agent was a difunctional primary amine (Jeffamine D-230 by Huntsman).
More specifically, the organoclays have been treated with primary amine (octadecyl amine) and quaternary amine (diethyl di(hydrogenated tallow) amine), intercalant with three different surface coverage levels of 60, 100, and 120%.
Two organonanoclays recommended for use with amine-cured epoxy systems were used, namely, Nanomer[R] I.30E (montmorillonite treated with octadecyl amine, a primary amine base) from Nanocor (Arlington Heights, IL) and Cloisite[R] 30B (montmorillonite treated with methyl tallow bis-(2-hydroxyethyl) quaternary ammonium) from Southern Clay Products (Gonzales, TX).
where [a.sub.1], [a.sub.2], [a.sub.3], e, and et are primary amine, secondary amine, tertiary amine, epoxide, and ether group, respectively.
To confirm the presence of amine group in AFAAC, total mole of amine, mole of primary amine and mole of secondary amine per kilogram of AFAAC have been calculated from the results of potentiometric titration (Aniline was used as internal standard) and their corresponding values per kilogram of AFAAC are 8.4, 0.9, and 7.5, respectively.
Although derived from a primary amine, this accelerator is characterized by the long scorch delay and slow cure rate typically associated with the secondary amine based sulfenamides.
In both the DBU and primary amine systems, there exists a performance gap between the free nucleophile and the latent nucleophile.
Nitrosamines from vulcanizing agents can be controlled or eliminated by using only primary amine based accelerators or accelerators which form stable fragments during cure.
In general, a combination of an epoxy resin and a primary amine leads to two principal reactions of (a) the addition reaction of a primary amine hydrogen to an epoxy group to form a secondary amine and (b) the addition reaction of an amine hydrogen in the secondary amine to another epoxy group to create a tertiary amine [21, 22],
The sulfenimide accelerator such as TBSI with a primary amine is a viable replacement candidate.

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