Abstract:
The present invention relates to a single-stage method for the hydrogenating separation of lignin using a catalyst comprising a transition metal carbide, optionally in mixture with additional catalysts, comprising the following steps: (A) mixing the catalyst or the catalyst mixture with lignin in at least one organic solvent; (B) conversion of the mixture from (A) with hydrogen; (C) separation of the reaction products.
Abstract:
The present invention relates to a shell catalyst, comprising an active metal selected from the group of ruthenium, rhodium, palladium, platinum, and mixtures thereof, applied to a carrier material comprising silicon dioxide, wherein the pore volume of the carrier material is 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is 280 to 500 m2/g, and at least 90% of the pores present comprise a diameter from 6 to 12 nm, to a method for producing said shell catalyst, to a method for hydrogenating an organic compound comprising at least one hydrogenatable group using the shell catalyst, and to the use of the shell catalyst for hydrogenating an organic compound.
Abstract:
The invention relates to a method for producing monoethylenically unsaturated glycosylamines, in which an aldehyde sugar is reacted with a primary aliphatic amine or ammonia in an aqueous medium and with the anhydride of a simple unsaturated carboxylic acid, without intermediate isolation, or aldehyde sugar is reacted directly with allylamine. The invention also relates to a method for producing polymers containing polymerised N-acylated glycosylamine groups, and to novel unsaturated N-maleinylated glycosylamine.
Abstract:
The invention relates to a method for producing unsaturated acylamidoalkyl polyhydroxy acid amides, in which the reaction product from polyhydroxy acid lactone and aliphatic diamine is reacted with the anhydride of a simple unsaturated carboxylic acid. The invention also relates to unsaturated acylamidoalkyl polyhydroxy acid amides and to a method for producing polymers from unsaturated acylamidoalkyl polyhydroxy acid amides.
Abstract:
The present invention relates to an integrated method for producing cellulose and at least one low-molecular-weight reusable material, in which a starting material containing lignocellulose is provided and subjected to a decomposition with a processing medium. A fraction enriched with cellulose and a fraction depleted of cellulose is then isolated from the decomposition material, the depleted fraction of cellulose being subjected to a treatment during which at least one low-molecular-weight reusable material is obtained.
Abstract:
The invention relates to a method for electrochemically cleaving lignin by means of a diamond electrode and to a method for producing vanillin and the derivatives thereof by electrochemically cleaving lignin in a solution having a pH-value of
Abstract:
Formulación que contiene (A) en total en el intervalo del 1 % al 50 % en peso al menos de un aminocarboxilato, seleccionado de diacetato de metilglicina (MGDA), ácido iminodisuccínico (IDS) y diacetato de ácido glutámico (GLDA) así como sus sales, (B) en total en el intervalo 5 del 0,001 % al 5 % en peso al menos de un polímero de alquilenimina, que está modificado de manera covalente con al menos un ácido carboxílico o al menos un derivado de un ácido carboxílico o al menos un derivado de ácido carbónico, habiendo reaccionado hasta como máximo el 75 % en moles de los átomos de nitrógeno de los grupos amino primarios y secundarios del polímero de alquilenimina con ácido carboxílico o bien derivado de ácido carboxílico o bien ácido carbónico o con ácido cianhídrico y formaldehído, con respecto en cada caso al contenido de sólidos de la respectiva formulación.
Abstract:
Formulación, que está libre de metales pesados, que contiene (A) en total en el intervalo del 1 % al 50 % en peso al menos de un aminocarboxilato, seleccionado de diacetato de metilglicina (MGDA), ácido iminodisuccínico (IDS) y diacetato de ácido glutámico (GLDA) así como sus sales, (B) en total en el intervalo del 0,001 % al 2 % en peso al menos de un polímero de alquilenimina alcoxilado con un peso molecular promedio Mw en el intervalo de 800 a 25.000 g/mol, que presenta una densidad de carga positiva de al menos 5 meq/g y que presenta cadenas laterales de óxido de alquileno en el intervalo del 2 hasta como máximo el 80 % en peso, con respecto al polímero de alquilenimina alcoxilado total, con respecto en cada caso al contenido de sólidos de la respectiva formulación.
Abstract:
Formulations comprising (A) at least one aminocarboxylate selected from methylglycine diacetate (MGDA), iminodisuccinic acid (IDS) and glutamic acid diacetate (GLDA) and salts and derivatives thereof, and (B) at least one alkoxylated alkyleneimine polymer having a mean molecular weight Mw in the range from 800 to 25 000 g/mol, which has a positive charge density of at least 5 meq/g and which has in the range from 2 to not more than 80% by weight of alkylene oxide side chains, based on overall alkoxylated alkyleneimine polymer.