申请人:Engel Robert
公开号:US09296685B2
公开(公告)日:2016-03-29
Method of producing a nanoparticle suspension with the steps (i) preparation of an emulsion of a disperse polar phase, where the aqueous phase comprises one or more precursor substances forming the nanoparticles, in a continuous organic phase in the presence of an emulsifier stabilizing the emulsion, (ii) conversion of the one or more precursor substances to nanoparticles in the disperse aqueous phase, (iii) breaking of the emulsion and phase separation, where the nanoparticle suspension is obtained as one phase, (iv) separation off of the nanoparticle suspension, (v) optionally isolation of the nanoparticles from the nanoparticle suspension, wherein the emulsifier is selected from compounds of the general formula (I) in which X is O, NH, Y is C(O), NH, R is a saturated or a mono- or polyunsaturated, linear or branched hydrocarbon radical having 6 to 30 carbon atoms and R1 is hydrogen or C1-C4-alkyl, and R2 is a saturated or a mono- or polyunsaturated, linear or branched hydrocarbon radical having 1 to 30 carbon atoms, preferably 6 to 30 carbon atoms, R3 is C1-C4-alkyl, n is 0 or 1, and the breaking of the emulsion is effected by splitting the emulsifier.
生产纳米粒子悬浮液的方法包括以下步骤:(i) 准备分散极性相的乳液,其中水相包括形成纳米粒子的一个或多个前体物质,在连续的有机相中存在一种稳定乳液的乳化剂,(ii) 将一个或多个前体物质转化为纳米粒子在分散水相中,(iii) 打破乳液并相分离,从而得到纳米粒子悬浮液作为一个相,(iv) 分离出纳米粒子悬浮液,(v) 可选地从纳米粒子悬浮液中分离纳米粒子,其中乳化剂选择自以下通式(I)的化合物,其中X为O、NH,Y为C(O)、NH,R为具有6到30个碳原子的饱和或单烯烃、线性或支链烃基,R1为氢或C1-C4-烷基,R2为具有1到30个碳原子的饱和或单烯烃、线性或支链烃基,优选为6到30个碳原子,R3为C1-C4-烷基,n为0或1,乳化剂的打破通过分解乳化剂来实现。