Polyamine INDEX

Additives for lubricating oils providing a combination of viscosity index improvement (VII) and dispersancy have also been reported. These additives are prepared from ethyleneamines by reaction with various Vll-type polymers that have been chlorinated or modified in some other way to provide an ethyleneamine reaction site. Antimst additives for lubricating oils have been prepared by reaction of polyamines with fatty acids followed by reaction with polyalkylenesuccinic anhydrides (178,179). 

Polythiosemicarbazide disulfide is the most efficient aliphatic polyamine disulfide for inhibiting the thermal oxidative breakdown of polypropylene, while polyimi-noaniline disulfide and polydiiminodiphenyloxide disulfide (Fig. 3) are the most efficient aromatic polyamine disulfides. In contrast to polyethylene, the thermal oxidative breakdown period increases as the concentration increases (Fig. 4), Depending on the concentration, the flow-melt index at 230°C increases at a lower rate than in the case of commercial stabilizer Santanox (Table 2)-... 

Table 2 Effect of Polyamine Disulfide Concentration on the Polypropylene Flow-Melt Index During Thermal Oxidative Breakdown...

Macrocyclic (bicyclic and polycyclic) polyamine dispersants and viscosity index (VI) improvers... 

Classification Aliphatic polyamine Empirical C6H18N4 Formula NH2(C2H4NH)2C2H4NH2 Properties YIsh. mod. vise, oily liq. weak ammoniacal odor sol. in water, alcohol, acetone, benzene, ethyl ether misc. with oxygenated and aromatic soivs. si. sol. in heptane immisc. with aliphatic soivs. m.w. 146.23 dens. 0.9818 (20/20 C) m.p. 12 C b.p. 277.5 C pour pt. < -40 C flash pt. (CC) 275 F ref. index 1.4971 (20 C) pH 14 Toxicology LD50 (oral, rat) 2.5 g/kg, (IV, mouse)... 

Effect of inhibition of phenylalanine ammonia-lyase activity on growth of alfalfa cell suspension culture alterations in mitotic index, ethylene production, and contents of phenolics, cytokinins, and polyamines. Physiologia Plantarum, Vol 107, No. 3, pp 329-337, ISSN 1399-3054. 

Steinbiichel Alexander. Polysaccharides and Polyamines in the Food Industry (10 Volumes with Index). Wiley-VCH (2002). 

The refractive index responses of various sugars (NeuAc, Glc, Gal, Fuc, GlcNAc, maltose, maltotriose and maltotetraose) eluted from a cadon exchange resin colunm (H - form, acidic eluant) were shown to be proportional to the mass injected and their molecular mass. A method to rapidly monitor glucose, fructose, sucrose and maltose in fermentation broths involved solid-phase extraction of interfering substances and h.p.l.c. on a polyamine column with refractive index detection. ... 

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