000			01732nab a2200205 4500
005			20260520000843.0
008			260224s2009 xxu
245	0	0	_aA study of the kinetic hydrate inhibitor perfomance and seawater biodegradability of a series of poly(2-alkyl-2-oxazoline)s
260			_a _b _cjul./ago. 2009
270			_a15/06/2010 ; 15/06/2010
300			_a9 p. ; 3665-3673
520			_aTranscripción del resumen del autor. Kinetic hydrate inhibitors (KHIs) have been used successfully in the field for about the last 14 years to prevent gas hydrate formation mostly in gas and oilfield production lines. They work by delaying the nucleation and often also the growth of gas hydrate crystals for periods of time dependent on the subcooling in the system. Poly(2-alkyl-2-oxazoline)s [or poly(N-acylalkylene imine)s] are a known class of KHI, but no work has previously been published detailing a systematic study of structure versus performance. In this paper we report the KHI performance of poly(2-alkyl-2-oxazoline) homopolymers and statistical copolymers with alkyl side groups up to four carbon atoms. The study includes hydrate crystal growth tests on structure II tetrahydrofuran hydrate crystals as well as high pressure nucleation and crystal growth studies on a synthetic natural gas mixture giving structure II hydrates. Seawater biodegradation studies on all the polymers according to the OECD306 procedure indicate that they are all poorly biodegradable (<20% in 28 days).
581			_a4
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aDel Villano, Luca _942672
100	1		_aKommedal, Roald _942673
100	1		_aFijten, Martin W.M. _942674
999			_c171030 _d171030