摘要:
A microporous crystalline material named zeolite A-LSX having, in its anhydrous form, an oxides molar composition corresponding to formula (I):(M.sub.2/n O+M'.sub.2/n O).Al.sub.2 O.sub.3.zSiO.sub.2 (I)in which:M and M', identical or different, represent a cation of an alkali or alkaline earth metal of valency n;z is a number between 2.1 and 2.6, extremes included.Said microporous crystalline material can be used as a builder in detergent systems.
摘要翻译:一种名为沸石A-LSX的微孔结晶物质,其以无水形式具有对应于式(I)的氧化物摩尔组成:(M2 / nO + M'2 / nO).Al2O3.zSiO2(I)其中:M和 M'相同或不同,表示n价碱金属或碱土金属的阳离子; z是2.1到2.6之间的数字,包括极值。 所述微孔结晶材料可用作洗涤剂体系中的助洗剂。
摘要:
Process for the synthesis of ZMS-5 zeolites essentially consisting of: a. preparing two aqueous solutions of sodium aluminate and silicate; b. putting the two solutions in contact with each other under stirring at room temperature; c. adding a solution of a mineral acid to solution (a) or to solution (b) or to solution (a)+(b), in such a quantity that the molar ratio OH−/H2O ranges from 0.02 to 0.03; d. adding a quantity of water sufficient for maintaining fluid the reacting mixture and the molar ratio OH−/H2O from 0.017 to 0.022; e. pre-heating the final mixture obtained at the end of steps (a)-(d) at a temperature ranging from 20 to 60° C.; and f. heating the mixture, under stirring, at a temperature ranging from 100 to 200° C.
摘要:
The present invention relates to pharmaceutical compositions for the oral administration of pharmacologically active molecules, comprising a release means consisting of porous zeolite in powder form, incorporating pharmacologically active molecules inside the pores and/or on its surface, the relative use for the preparation of drugs for oral administration, in particular for the treatment of inflammatory pathologies at an intestinal level and the preparation process of these compositions.