摘要:
There is disclosed a process for preparing stable colloidal sols of antimony pentoxide in organic solvents which comprises the steps of adjusting an amount of an organic base in an aqueous colloidal solution of antimony pentoxide to, in terms of % by weight, 2 to 30% based on antimony pentoxide in the aqueous colloidal solution of antimony pentoxide; adding an organic acid in an amount of 0.2 to 20%; and replacing a dispersing medium of the colloidal solution from water to an organic solvent.
摘要:
There is disclosed a process for preparing colloidal sols of antimony pentoxide in organic solvents which comprises the steps of:(a) reacting an alkali antimonate with 0.5 to 5 times of a monovalent or divalent inorganic acid in terms of stoichiometric ratio to form an antimony pentoxide gel,(b) after separating and washing the gel, aging the resulting wet cake at room temperature to 100.degree. C., and(c) peptizing the product in an organic solvent with Sb.sub.2 O.sub.5 being added, in terms of % by weight, 2 to 30% of an organic base and 0.2 to 20% of an organic acid as peptizing auxiliaries, and then removing water contained therein.
摘要翻译:公开了一种在有机溶剂中制备五氧化二锑的胶体溶胶的方法,该方法包括以下步骤:(a)以化学计量比计,使碱金属锑酸盐与0.5至5倍的一价或二价无机酸反应形成五氧化二锑 凝胶,(b)在分离和洗涤凝胶之后,将所得湿滤饼在室温下老化至100℃,和(c)将产物在添加Sb 2 O 5的有机溶剂中胶溶,以重量%计,2 至30%的有机碱和0.2至20%的有机酸作为胶溶助剂,然后除去其中所含的水。
摘要:
An iron base sintered, wear-resistant material consisting substantially of, in weight ratio, 3-25% of Cr, 0.1-2% of P, 0.5-3% of C, 1-13% of at least two elements selected from the group consisting of 0.5-7% Mo, 0.1-8% W, 0.1-3V and 0.5-2% Ni, 10-25% of Cu and the balance being essentially Fe.
摘要:
Antimony pentoxide-containing flame retardant for halogen-containing vinyl resins which comprises, with respect to 100 parts by weight of Sb.sub.2 O.sub.5, (A) 3 to 20 parts by weight of an alkali metal in terms of M.sub.2 O wherein M represents an alkali metal, (B) 1 to 25 parts by weight of an alkaline earth metal in terms of M'O wherein M' represents an alkaline earth metal, and (C) 0.04 to 3 parts by weight of a compound selected from the group consisting of phosphoric acid, an ammonium salt of phosphoric acid, and an alkali metal salt of phosphoric acid, in terms of P.sub.2 O.sub.5, as well as a method for preparing the same.The flame retardant according to this invention does not impair, the transparency, the thermal stability, or the bleeding resistance of the halogen-containing vinyl resins.
摘要翻译:含卤素乙烯基树脂的含五氧化锑的阻燃剂包括:相对于100重量份的Sb 2 O 5,(A)3至20重量份的以M 2 O换算的碱金属,其中M表示碱金属( B)1〜25重量份的以M'O表示的碱土金属,其中M'表示碱土金属,(C)0.04〜3重量份选自磷酸, 磷酸的铵盐和磷酸的碱金属盐,按照P2O5的方法,以及其制备方法。 根据本发明的阻燃剂不会损害含卤乙烯基树脂的透明度,热稳定性或耐渗出性。
摘要:
A process for preparing an antimony pentoxide sol, which comprises dispersing sodium antimonate in water, reacting the sodium antimonate with a monovalent or divalent inorganic acid added in a stoichiometrical amount of 0.7 time to 5 times the amount of the sodium antimonate to form the sodium salt of said inorganic acid and an antimony pentoxide gel, separating and water washing said gel, dispersing said gel in water, and peptizing said gel dispersed in water by adding an organic base in an amount to provide a stoichiometrical amount of base / Sb.sub.2 O.sub.5 of from 0.03 to 1.
摘要翻译:一种制备五氧化二锑溶胶的方法,其包括将锑酸钠分散在水中,使锑酸钠与以锑酸钠的量的0.7倍至5倍的化学计量加入的一价或二价无机酸反应形成钠盐 的所述无机酸和五氧化二锑凝胶,分离并水洗所述凝胶,将所述凝胶分散在水中,并通过加入有机碱将所述凝胶分散在水中,将其提供化学计量的碱/ Sb 2 O 5为0.03 到1。