摘要:
The hair treatment composition includes (A) at least one polydimethylsiloxane with hydroxy end groups, advantageously .alpha.-hydroxy-.omega.-hydroxy-poly[oxy(dimethylsilylene)]; (B) at least one volatile, linear or cyclic polydimethylsiloxane, advantageously octamethylcyclotetrasiloxane, and (C) at least one isoparaffin, advantageously an isomeric mixture of isododecanes. Also the composition is advantageously free of water or contains no more than 5 % water and is free of cross-linking agents. The composition forms a smooth protective film on hair which is treated with it, with brilliant luster, without loading the hair.
摘要:
The aqueous hair fixing composition is in the form of a highly viscous sprayable gel and contains 0.1 to 50 percent by weight of one or more disaccharides or a mixture of 2 to 37 percent by weight of one or more disaccharides and 63 to 98 percent by weight of one or more oligosaccharides, 0.05 to 30 percent by weight of one or more cationic polymers, and 0.05 to 10 percent by weight of at least one thickener selected from the group consisting of honopolymers of acrylic acid, acrylic acid/acrylamides copolymers and sclerotium gum, The composition of the invention necessarily does hot contain monovalent aliphatic alcohols having 1 to 4 carbon atoms and no inorganic salts of alkali metals or inorganic salts of bivalent or trivalent metals. Either the composition is sprayed with the aid of a mechanical spray device or, alternatively, a gaseous propellant is included in it and the composition and propellant is included under pressure in a dispensing container.
摘要:
The hair treatment composition is based on a polymer combination including (A) 0.01 to 40 percent by weight of a salt formed from a chitosan having a molecular weight of at least 100,000 g/mol and 2-pyrrolidon-5-carboxylic acid, and (B) 0.01 to 50 percent by weight of at least one synthetic, film-forming anionic or nonionic hair fixing polymer, or natural film-forming hair fixing polymer. This hair treatment composition provides an improved action in regard to combability, care sensitivity, load on the hair, brushability, hair feel, hair fixing action and residues left on the hair.
摘要:
The present application relates to a process for preparing secondary amines by aminating excess primary or secondary alcohols with primary amines in the liquid phase in the presence of copper-comprising catalysts.
摘要:
The present invention relates to a process for hydrogenating organic nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the shaped body catalyst is arranged in a fixed bed, wherein the shaped body in the shape of spheres or rods has in each case a diameter 3 mm or less, in the shape of tablets a height of 4 mm or less, and in the case of all other geometries in each case has an equivalent diameter L=1/a′ of 0.70 mm or less, where a′ is the external surface area per unit volume (mms2/mmp3), where: a ′ = A p V p , where Ap is the external surface area of the catalyst particle (mms2) and Vp is the volume of the catalyst particle (mmp3). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
摘要翻译:本发明涉及一种在反应器中催化剂存在下通过氢气氢化有机腈的方法,其中成形体催化剂布置在固定床中,其中球体或棒状的成形体具有 每个壳体的直径为3mm以下,片状形状为4mm以下,在各种情况下,所有其他几何形状的等效直径L = 1 / a'为0.70mm以下,其中 a'是每单位体积的外表面积(mms2 / mmp3),其中:a'= A p V p,其中Ap是催化剂颗粒的外表面积(mms2),Vp是催化剂颗粒的体积 mmp3)。 本发明还涉及由根据本发明制备的胺制备异佛尔酮二胺(IPDA)或N,N-二甲基氨基丙胺(DMAPA)的下游产物的方法。
摘要:
A process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the catalyst is a coated catalyst which comprises at least one metal of group VIII of the Periodic Table of the Elements as a hydrogenating metal and additionally a promoter on an oxidic support, at least 80% of the metal of group VIII of the Periodic Table of the Elements being present in a layer between the surface of the catalyst and a penetration depth which is not more than 80% of the radius of the catalyst, calculated from the surface of the catalyst.
摘要:
A method is provided for manufacturing a function element carrier with function elements, for example, individual tufts made up of bristles and/or massage elements, interproximal cleaning elements, or other elements designed to be fastened to a toothbrush and also perform special functions. The function elements are equipped at their ends intended for anchoring in a toothbrush with an anchor, retainer or axle element. The method includes: (a) inserting several function elements in corresponding recesses of an injection mold, said injection mold being connected via grid or bar shaped channels formed in a die to recesses in the areas of the anchoring ends of the function elements; (b) filling the grid or bar shaped channels with liquefied plastic material and injecting said material at the anchoring ends of the function elements or embedding them therein; and (c) allowing the plastic material to cool and removing a function element carrier made up of a grid or bar shaped plastic frame and the function elements. Function element carriers and toothbrushes are also provided.
摘要:
A process for preparing an amine by reacting an aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of primary and secondary amines in the presence of a heterogeneous catalyst, wherein the catalyst is a coated catalyst which comprises at least one metal of group VIII of the Periodic Table of the Elements as a hydrogenating metal and additionally a promoter on an oxidic support, at least 80% of the metal of group VIII of the Periodic Table of the Elements being present in a layer between the surface of the catalyst and a penetration depth which is not more than 80% of the radius of the catalyst, calculated from the surface of the catalyst.
摘要:
In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.
摘要:
The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO2, contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.