Abstract: The present invention in a first aspect relates to taste improvement of foodstuffs, beverages, pharmaceutics, tobacco products and oral care products, using extremely small amounts of a substance according to formula (I), or edible salts thereof: R1—CR2(OR3)—CO—X (I). It was found that at very low concentrations, substances represented by formula (I) are capable of modifying and complementing, the sensory impact of taste imparting substances. Thus, the present taste improving substances are advantageously applied in flavour compositions, foodstuffs, pharmaceutics, tobacco products and oral care products. Typical examples of taste improving substances according to the present invention include N-lactoyl GMP, N-lactoyl AMP, N-lactoyl CMP, N-lactoyl IMP, N-gluconyl GMP, N-gluconyl AMP, N-gluconyl CMP, N-gluconyl IMP, O-lactoyl-GMP, O-lactoyl AMP, O-lactoyl CMP, O-lactoyl IMP, O-gluconyl GMP, O-gluconyl AMP, O-gluconyl CMP and O-gluconyl IMP and mixtures thereof.

Abstract: The present invention in a first aspect relates to taste improvement of foodstuffs, beverages, pharmaceutics, tobacco products and oral care products, using extremely small amounts of a substance according to formula (I), or edible salts thereof: R1—CR2(OR3)—CO—X (I). It was found that at very low concentrations, substances represented by formula (I) are capable of modifying and complementing, the sensory impact of taste imparting substances. Thus, the present taste improving substances are advantageously applied in flavour compositions, foodstuffs, pharmaceutics, tobacco products and oral care products. Typical examples of taste improving substances according to the present invention include N-lactoyl GMP, N-lactoyl AMP, N-lactoyl CMP, N-lactoyl IMP, N-gluconyl GMP, N-gluconyl AMP, N-gluconyl CMP, N-gluconyl IMP, O-lactoyl-GMP, O-lactoyl AMP, O-lactoyl CMP, O-lactoyl IMP, O-gluconyl GMP, O-gluconyl AMP, O-gluconyl CMP and O-gluconyl IMP and mixtures thereof.

Abstract: Process for the oligomerization of one or more olefinically unsaturated monomers comprising three or more carbon atoms, at least one of these monomers consisting of a C3 to C30 aliphatic mono-olefin, which process comprises reacting the olefinically unsaturated monomer(s) under oligomerization conditions in the presence of an effective amount of a catalyst system based on (a) a specific titanium bisamide compound or its dimer; (b) one or more activating cocatalysts comprising at least one boron atom; and optionally, but in any event if the titanium bisamide compound or its dimer comprise halogen: (c) one or more aluminium alkyls or alumoxanes. A mixture of homo-oligomers of propylene is provided by the above process, which mixture comprises oligomers of propylene based on up to 20 propylene molecules, wherein at least 50 mole % of the oligomer chains have a terminal vinyl group.