摘要:
A process for preparing polyether polyols by reaction of the following starting materials: a) one or more alkylene oxides and, if appropriate, carbon dioxide and also b) one or more H-functional starter substances, in the presence of a catalyst, in a reaction unit having a plurality of parallel layers A, B which are microstructured so that each layer has a multiplicity of channels which are arranged parallel to one another and form a continuous flow path from one side of the plate to the opposite side of this, wherein a distribution device for introduction of the starting materials and the catalyst is provided at one end of the channels of the layers A and a collection device for the reaction mixture is provided at the other end of these is proposed.
摘要:
What is proposed is a process for preparing polyether alcohols by conversion of the following reactants: a) one or more alkylene oxides and optionally carbon dioxide and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture, in a reaction unit (1), which is characterized in that the reaction unit (1) has internals (2) which form a multitude of microstructured flow channels which bring about multiple splitting of the liquid reaction mixture into component flow paths and recombination thereof in altered arrangement, the multiple splitting and recombination being repeated several times and the microstructured flow channels having a characteristic dimension which is defined as the greatest possible distance of any particle in the liquid reaction mixture from the wall of a flow channel closest to the particle, in the range from 20 to 10 000 μm, the result being that the flow profile of the liquid reaction mixture approximates to ideal plug flow as a result of the microstructured flow channels.
摘要:
What is proposed is a process for preparing polyether alcohols by conversion of the following reactants: a) one or more alkylene oxides and optionally carbon dioxide and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture, in a reaction unit (1), which is characterized in that the reaction unit (1) has internals (2) which form a multitude of microstructured flow channels which bring about multiple splitting of the liquid reaction mixture into component flow paths and recombination thereof in altered arrangement, the multiple splitting and recombination being repeated several times and the microstructured flow channels having a characteristic dimension which is defined as the greatest possible distance of any particle in the liquid reaction mixture from the wall of a flow channel closest to the particle, in the range from 20 to 10 000 μm, the result being that the flow profile of the liquid reaction mixture approximates to ideal plug flow as a result of the microstructured flow channels.
摘要:
The present invention relates to agrochemical compositions which comprise certain alcohol alkoxylates of the amphiphilic type, and the use of the alcohol alkoxylates as activity-improving adjuvant in the agrochemical sector, and in particular in the plant protection sector. The alcohol alkoxylates take the form of alkoxylated alcohols of the formula (I) R—O—[(CnH2nO)x-(PhC2H3O)y—(CmH2mO)z]co—H (I) in which R represents a hydrocarbon radical having 1 to 30 carbon atoms; n, m independently of one another represent a value of from 2 to 16; x represents a value of from 0 to 100; y represents a value of from 0.5 to 100; z represents a value of from 0 to 100; and x+y+z corresponds to a value of from 2 to 100, where at least one of x or z is greater than 0.
摘要翻译:本发明涉及包含两亲型某些醇烷氧基化物的农用化学组合物,以及在农业化学领域,特别是植物保护领域中使用醇烷氧基化物作为活性改进助剂。 醇烷氧基化物采用式(I)R-O - [(CnH2nO)x-(PhC2H3O)y-(CmH2mO)z] co-H(I)的烷氧基化醇的形式,其中R表示具有1 至30个碳原子; n,m彼此独立地表示2至16的值; x表示0至100的值; y表示0.5〜100的值; z表示0至100的值; x + y + z对应于2至100的值,其中x或z中的至少一个大于0。
摘要:
The present invention relates to a process for preparing a polyetherol which comprises reacting at least one alkylene oxide with at least one starter compound in the presence of a catalyst of the formula I: M1p[M2qOn(OH)2(3-n)]x, (I) and to the polyetherols prepared by such a process and to their use for the synthesis of polyurethanes, as fuel additive or as surfactant.
摘要:
The present invention relates to low-foam surfactant mixtures comprising esters of the general formula (I) and alcohols thereof of the general formula (Ia) where R is a branched or unbranched alkyl radical having from 8 to 22 carbon atoms; Ra, R1 are each independently hydrogen or a branched or unbranched alkyl radical having from 1 to 5 carbon atoms; R2 is a branched or unbranched alkyl radical having from 5 to 17 carbon atoms; l, n are each independently from 1 to 5 and m is from 38 to 70, and where the ratio of the molar amounts of the esters (I) to the alcohols (Ia) is at least 17:3. The invention further relates to the process for preparing them and to their use and to washing and cleaning composition formulations comprising them.
摘要翻译:本发明涉及包含通式(I)的酯和通式(Ia)的醇的低泡表面活性剂混合物,其中R是具有8-22个碳原子的支链或非支链烷基; R a,R 1各自独立地为氢或具有1至5个碳原子的支链或非支链烷基; R2是具有5至17个碳原子的支链或非支链烷基; 1,n各自独立地为1至5,m为38至70,并且其中酯(I)与醇(Ia)的摩尔量之比至少为17:3。 本发明还涉及制备它们的方法及其用途以及洗涤和清洗包含它们的组合物制剂。
摘要:
The invention relates to a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substances using DMC catalysts, wherein one or more starter substances are initially placed in the reactor and one or more starter substances are metered continuously into the reactor during the reaction.
摘要:
The present invention relates to a surfactant mixture comprising (A) a short-chain component comprising the alkoxylation product of alkanols, where the alkanols have 8 to 12 carbon atoms and the average number of alkoxy groups per alkanol group in the alkoxylation product assumes a value from 0.1 to 30, the alkoxy groups are C2-10-alkoxy groups and the alkanols have an average degree of branching of at least 1; and (B) a long-chain component comprising the alkoxylation product of alkanols, where the alkanols have 15 to 19 carbon atoms and the average number of alkoxy groups per alkanol group in the alkoxylation product assumes a value from 0.1 to 30, the alkoxy groups are C2-10-alkoxy groups and the alkanols have an average degree of branching of at least 2.5; and/or phosphate esters, sulfate esters and ether carboxylates thereof. The present invention also relates to formulations comprising such surfactant mixtures, to methods of producing the surfactant mixtures and to their use.
摘要:
The invention relates to a method of reducing the inhalation toxicity of functional fluids by incorporating into a functional fluid an effective amount of copolymer which is obtainable by copolymerizing etheylene oxide, propylene oxide and/or butylenes oxide with an initiator monool or diol, said copolymer having a degree of unsaturation of less than about 0.01 meq/g.
摘要:
The present invention relates to a process for the alkoxylation of a monool with at least one alkoxylating agent to an alkoxylated alcohol wherein a catalyst is employed which comprises a metallo-organic framework material of metal ions and at least bidentate coordinately bound organic ligands.