摘要:
Described are a concentrate, a working solution and a process for iron phosphating of metals, in which the solution contains nitrobenzene sulfonic acid and substituted short-chain monocarboxylic acids of the amino acid and/or hydroxycarboxylic acid type as the accelerators.
摘要:
A tablet composition containing 2% to 100% by weight of amorphous crystalline or partly crystalline layer-form sodium silicates corresponding to the formula Na.sub.2 Si.sub.x --O.sub.2x+1.yH.sub.2 O wherein x is a number of 1.9 to 4 and y is a number of 0 to 20, with the proviso that the tablet composition only contains water in a quantity such that the maximum theoretical water-binding capacity of the components of the composition is not exceeded.
摘要:
A process for inhibiting the corrosion of silver in a dishwashing detergent solution by adding to the solution an inorganic redox-active substance.
摘要:
The invention relates to opacifiers containing waxes and a mixture of two emulsifiers with different HLB values. The low-viscosity opacifier concentrates are based on waxes with a solids content of 40 to 60% by weight which are characterized that they contain at least one hydrophilic nonionic surfactant with an HLB value above 10 and at least one hydrophobic nonionic surfactant with ab HLB value below 10 as emulsifiers.
摘要:
A process for separating a multi-component mixture containing solid or liquid organic components by treating the mixture with a gaseous entraining agent comprising a superheated carrier fluid containing a lower monohydric alcohol or a lower monohydric alcohol and water to cause constituents of the multi-component mixture to become entrained in the gaseous entraining agent, and separating the gaseous entraining agent containing constituents of the multi-component mixture from the multi-component mixture.
摘要:
The invention is associated with a refill cartridge for a stick which applies product by rubbing onto a surface, comprising a tube-like element, which is designed to be tightly closed at both ends and of which one end is designed to fit tightly onto a tube element of the stick; a longitudinally displaceable plunger with a screwthreaded bore--onto which a screwthreaded spindle of the adhesive stick projecting from the tube element is designed to be screwed--being non-rotatably guided in the tube-like element; and the tube-like element being filled with a product which bears against the plunger at one end and, the product in an extension of the screwthreaded bore, is formed throughout with a bore in which the screwthreaded spindle engages when the refill cartridge is fitted onto the stick. The bore in the product is formed via the tube-like element being releasably closed at its free end by a sealingly fitted cap-like closure element, the cap-like closure element being internally formed with a pin-like projection which fills the intended area of the bore extending throughout the product in a liquified state. After the product solidifies, removal of the cap and its associated pin-like projection leaves the bore fully formed in the product.
摘要:
A process for making a polyglycerol polyhydroxystearate comprising esterifying a polyhydroxystearic acid having a degree of self-condensation of from 2 to 20 with a polyglycerol component, the polyglycerol component consisting of: (a) from 5 to 30% by weight of a glycerol; (b) from 15 to 40% by weight of a diglycerol; (c) from 10 to 30% by weight of a triglycerol; (d) from 5 to 20% by weight of a tetraglycerol; (e) from 2 to 10% by weight of a pentaglycerol; and (f) remainder, up to 100%, of an oligoglycerol.
摘要:
The waste gas accumulating in the drying of products containing volatile ingredients is cooled, the condensate obtained is subjected to crossflow membrane filtration and part of the cleaned waste gas is returned to the drying process. The concentrate obtained is put to a material, thermal or other use. The both effective and economic process is suitable for eliminating the aerosols, particularly the organic aerosols, present in the waste gas.
摘要:
Hot melt adhesives having an "open time" of 10 minutes or longer, preferably more than 1 hour and, more preferably, more than 2 hours for a contact pressure of 5 kg/cm.sup.2 and atmospheric conditions of 25.degree. C./26% relative air humidity are provided. Immediately after the parts to be joined have been pressed together at 18.degree. to 23.degree. C., strengths (initial strengths) of 1 MPa and more and preferably more than 1.5 MPa are obtained. The hot melt adhesive is comprised of 1) a polyester, polyamide, polyethylene/vinyl acetate, or NCO-terminated polyurethane prepolymer which does not crystallize during the open time and 2) a tackifier and/or a plasticizer.
摘要:
A process for producing polycarboxylic acids or their salts from polysaccharides is provided. Solid particulate polysaccharides having at least one primary alcohol group in the polysaccharides are oxidized with nitrogen dioxide in a fluid bed. The fluidizing gas contains nitrogen dioxide and the process is operated at a pressure of from 0.5 to 12 bars and a temperature between the boiling point of nitrogen dioxide and 160.degree. C. At least two moles of nitrogen dioxide for the equivalent of the primary alcohol groups reacted over the entire reaction are provided.