High performance liquid chromatography/ electrospray ionisation and atmospheric pressure chemical ionisation mass spectrometry for the analysis of butylated amino resins

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Eur. J. Mass Spectrom. 4, 371 - 378 (1998)

High performance liquid chromatography/ electrospray ionisation and atmospheric pressure chemical ionisation mass spectrometry for the analysis of butylated amino resins

Donata Favretto
CNR Area di Ricerca, Corso Stati Uniti 4, I-35100 Padova, Italy.
Pietro Traldi
CNR, Centro di Studi sulla Stabilita e Reattivita dei Composti di Coordinazione, Via Marzolo 1, I-35100 Padova, Italy.
Adriano Marcelli
McWorther, SantAlbano Stura, Cuneo, Italy.

ABSTRACT:

Etherified amino resins are used in conjunction with alkyds, polyesters, epoxy or acrylic resins in coating formulation. They are formed from the reaction between formaldehyde and compounds containing NH₂ groups, for example, amide, amine or imide groups. Control of this reaction is important in order to obtain the appropriate mixture targeted for the intended use and, as a consequence, the development of analytical procedures able to describe the different species present in the final resin mixtures is necessary. The use of high-performance liquid chromatography, coupled with electrospray ionisation or atmospheric pressure chemical ionisation mass spectrometry, proved to be efficient in the characterisation of n-butylated melamine-formaldehyde resins. The same analytical approach was also applied to describe the first steps in the synthesis of i-butylated urea-formaldehyde resins.

Keywords: Melamine resins, HPLC/MS, ESI, APCI, ion trap.

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