摘要:
The present invention relates to polypeptide-polysiloxane copolymers, to their preparation by thermal copolymerization of amino acids with organofunctional polysiloxanes, and to their use as interface-active substances. The polypeptide-polysiloxane copolymers consist of at least one polysiloxane unit and of at least one polypeptide unit
摘要:
The present invention relates to organopolysiloxanes comprising polyhydroxyorganyl radicals, especially sugar radicals or sugar-derivative radicals, and polyoxyalkylene radicals, to processes for their preparation and to their use.
摘要:
Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.
摘要:
The invention relates to organosilanes and organopolysiloxanes which contain 2-oxazolidinone groups, where the oxazolidinone group is linked by the ring carbon atom C-4 or C-5 via a spacer to the silane or siloxane and the spacer is connected via a hydrolysis-stable Si--C bond to the silane or siloxane, their use as surface-active substances and also their use for preparing organosilanes and organopolysiloxanes containing amino or carbamido groups.
摘要:
For allowing a reliable and high performance of a network, a method for operating a network is described, wherein the network includes a server and at least one client for communication with the server, an application computation or operation will be performed by the server and the result of the application computation or operation will be displayed at the client. The method is characterized in that a network element will be provided for use by the client, wherein the network element performs at least one application computation or operation on behalf of the server. Further, a corresponding network for carrying out the above mentioned method is also disclosed.
摘要:
Process for recovering molybdate or tungstate from an aqueous solution, in which molybdate or tungstate is bound to a water-insoluble, cationized inorganic carrier material from the aqueous solution at a pH in the range from 2 to 6, the laden carrier material is separated off and the bound molybdate or tungstate is liberated once again into aqueous solution at a pH in the range from 6 to 14. The process is suitable for recovering molybdate or tungstate in the delignification of pulp with hydrogen peroxide in the presence of molybdate or tungstate as catalyst. The recovered molybdate or tungstate can be recycled to the delignification.
摘要:
A method of improving air release is disclosed. The method comprises obtaining a lubricant comprising two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100° C. The second base stock comprises a viscosity less than 10 cSt, Kv100° C. In addition, a lubricant formulation and method of blending a lubricant formulation is also disclosed. The lubricant formulation comprises at least two base stocks. At least 5 percent and no more than 90 percent of a first base stock comprising oil with a viscosity greater than 300 cSt, Kv100° C. At least 5 percent and no more than 90 percent of a second base stock comprising oil with a viscosity less than 10 cSt, Kv100° C.
摘要:
Water-based emulsifier wax gels are provided that include skin-identical sphingolipids The present invention also provides a process for the preparation of such gels, the use of such gels for the preparation of oil-in-water emulsions, and the resulting emulsions that contain the inventive gels.
摘要:
The present invention relates to the use of a polyether-modified polysiloxanes of a defined structure for the preparation of cosmetic and pharmaceutical oil-in-water emulsions, and to oil-in-water emulsions which comprise said polysiloxanes.
摘要:
Headbox for a paper-making machine including a nozzle extending transversely to the machine running direction across the machine width. The nozzle has a lower and an upper continuous wall each extending across the machine width. The lower nozzle wall is supported by several separate supporting elements distributed across the machine width on a foundation. The supporting elements are non-rigid or flexible plates to permit bending in a direction transversely to the machine running direction. Alternatively or additionally, a swivelable or pivotable upper nozzle wall is connected by several separate supporting members distributed across the machine width to a transverse bar attached above a swivel axis. The supporting members are non-rigid or flexible plates to permit bending transversely to the machine running direction. Alternatively or additionally, an upper arm and a central part of a central component of the headbox are each segmented transversely to the machine running direction, while an inlet-side central part of the central component and the lower nozzle wall are each designed to be continuous transverse to the machine running direction.