Abstract: The present invention relates to a process for the polyol-type synthesis of nanoparticulate magnetite starting from mixtures of Fe0 and FeIII in the presence of a mineral acid. The magnetite particles obtainable from the process have uniform size characteristics and have even presented higher SAR (Specific Absorption Rate) values than those of magnetosomes.

Abstract: The present invention relates to a process for the polyol-type synthesis of nanoparticulate magnetite starting from mixtures of Fe0 and FeIII in the presence of a mineral acid. The magnetite particles obtainable from the process have uniform size characteristics and have even presented higher SAR (Specific Absorption Rate) values than those of magnetosomes.

Abstract: The present invention relates to a process for the polyol-type synthesis of nanoparticulate magnetite starting from mixtures of Fe0 and Fe1III in the presence of a mineral acid. The magnetite particles obtainable from the process have uniform size characteristics and have even presented higher SAR (Specific Absorption Rate) values than those of magnetosomes.

Abstract: There are described nanoparticles of magnetic metal oxides employable in constructs consisting in polymer particles possibly also incorporating pharmacologically active substances.

Abstract: The present invention relates to a process for the polyol-type synthesis of nanoparticulate magnetite starting from mixtures of Fe0 and FelIII in the presence of a mineral acid. The magnetite particles obtainable from the process have uniform size characteristics and have even presented higher SAR (Specific Absorption Rate) values than those of magnetosomes.

Abstract: There are described nanoparticles of magnetic metal oxides employable in constructs consisting in polymer particles possibly also incorporating pharmacologically active substances.

Abstract: Stable boron resins of high selective absorbent power and their production process. Said boron resins consist of a polyacrylic matrix functionalized with quaternary ammonium groups, an epoxy group and phenylboric groups in accordance with general formula (I): ##STR1## in which P, R, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X.sup.- are as defined in the text. The resins are prepared by reacting an amine resin with an epihalohydrin and condensing the reaction product with a suitable boroxin. The resins of formula (I) can be used for separating sugars, in particular for purifying lactulose. They have greater selective power than currently known boron resins.

Abstract: Stable boron resins of high selective absorbent power, their production process, and processes of using said boron resins. The boron resins include a polyacrylic matrix functionalized with quaternary ammonium groups, an epoxy group and phenylboric groups in accordance with general formula (I): ##STR1## in which P, R, R.sub.1, R.sub.2, R.sub.3, Y and X.sup.- are as defined in the text. The resin is prepared by condensing an acrylic resin with an epihalohydrin and then with a halide or hydroxide of an oxiphenyl-aminophenyl- or thiophenyl-boroxin or their alkyl derivatives. Compared with similar currently known resins, the resins of formula (I) have improved selectivity in sugar preparation. They can be used for purifying lactulose.

Abstract: A method for preparing high-purity crystalline lactulose and the product obtained by the method, which comprises crystallization from aqueous solutions at a temperature of 5.degree.-40.degree. C., the starting aqueous solution having a lactulose concentration of 50-80% w/w, a lactose concentration of less than 5% of the lactulose concentration by weight, a galactose concentration of less than 5% of the lactulose concentration by weight, and a concentration of other sugars of less than 4% of the lactulose concentration by weight.

Abstract: A process for preparing high-purity lactulose by the following stages:(a) diluting with water to a concentration of 15-25% a syrup containing 45-55% of lactulose and having a lactulose content on a dry substance basis of between 74 and 82% w/w;(b) pretreating the diluted syrup with bromine or bifunctional boron resins;(c) treating the pretreated syrup from stage (b) with ion exchange resins of strong anion type under conditions such that the pH of the percolated syrup is between 8 and 10.

Abstract: A process for preparing lactulose from lactose in which an aqueous lactose mixture is reacted with a sodium aluminate solution and the solution obtained is continuously neutralized by feeding this solution and a sulphuric acid solution to a reactor simultaneously in such a manner as to obtain a pH of between 4.5 and 8.By operating in this manner an aluminium hydroxide suspension is obtained which can be easily separated from the lactulose solution.

Abstract: Stable boron resins of high selective absorbent power and their production process. Said boron resins consist of a polyacrylic matrix functionalized with quaternary groups, an epoxy group and phenylboric groups in accordance with general formula (I): ##STR1## in which P, R, R.sub.1, R.sub.2, R.sub.3, Y and X.sup.- are as defined in the text.The resin is prepared by condensing an acrylic resin with an epihalohydrin and then with a halide or hydroxide of an oxiphenyl-aminophenyl- or thiophenyl-boroxin or their alkyl derivatives.Compared with similar currently known resins, the resins of formula (I) have improved selectivity in sugar separation. They can be used for purifying lactulose.

Abstract: Stable boron resins of high selective absorbent power and their production process. Said boron resins consist of a polyacrylic matrix functionalized with quaternary ammonium groups, an epoxy group and phenylboric groups in accordance with general formula (I): ##STR1## in which P , R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X.sup.- are as defined in the text.The resins are prepared by reacting an amine resin with an epihalohydrin and condensing the reaction product with a suitable boroxin.The resins of formula (I) can be used for separating sugars, in particular for purifying lactulose. They have greater selective power than currently known boron resins.

Abstract: There are prepared 4-hydroxy-isophthalic acid bis (3- or 4-picolyl-amides) of the formula (I) ##STR1## where R' is H or an aliphatic or alicyclic hydrocarbon group with 1 to 16 carbon atoms, R'''' is 3-pyridyl or 4-pyridyl, R''' is H, Cl, NO.sub.2, or --OCH.sub.3, R'' is an aliphatic or alicyclic hydrocarbon group with 1 to 8 carbon atoms with the exception that when R'''' is 3-pyridyl and R' and R''' are both H, then R'' is an aliphatic or alicyclic hydrocarbon radical with 3 to 8 carbon atoms. The compounds are useful in inhibition of blood platelet aggregation.