摘要:
A pyridine-free Karl-Fischer reagent for the determination of water which comprises (a) a solvent solution containing sulfur dioxide and an amine in a Karl-Fischer reagent solvent, the amine being functionally equivalent to pyridine in a Karl-Fischer reagent, and (b) a titrating agent containing iodine in a Karl-Fischer solvent; the molar ratio of amine to sulfur dioxide being about 2:1 to about 1:1 and the reagent being essentially free of pyridine.
摘要:
A new Karl Fischer reagent contains as a pyridine substitute at least one compound of the general formula ##STR1## in which R.sup.1 and R.sup.2, which can be identical or different, =hydrogen or alkyl having 1-6 C atoms,R.sup.3 =alkyl having 1-6 C atoms,X=alkali metal ion or one equivalent of an alkaline earth metal ion,n=0 or a number from 1 to 4 andm=a number from 1 to 4.
摘要:
This invention relates to radically hardening adhesives, which contain polymerisable isocyanates and which are distinguished by high adhesive capacity on plastics materials.
摘要:
A load rod for vehicles, especially motor vehicles, which rod is constructed so as to be a tow rod, an impact rod, a mounting rod, or similar rod. The load rod includes a loop portion as well as force distributing legs that diverge from the loop portion and extend at a distance from each other. The force distributing legs are provided with a mounting section for enabling a mounting of the force distribution legs at portions of a body of the motor vehicle that have greater rigidity. The mounting sections are joined to the body portion of the motor vehicle by a welding. The load rod, formed as a connecting rod, includes at least two individual shaped rods having a predetermined cross section. The individual shaped rods are, within a connecting level, placed against each other with their rod loop portions and are welded together, while the individual force distributing legs diverge outwardly in a direction from both sides of the connecting level.
摘要:
A method for the detection and for the differential diagnostic determination of leukemic cells, comprises treating leucocytes with a supravital dye and evaluating the different staining of healthy and leukemic cells. Preferred dyes are triphenylmethane dyes of the phthalein and sulphophthalein classes.
摘要:
A thin cover sheet for use in microscopic staining consists essentially of a transparent, water-insoluble plastic carrier and a coating thereon comprising a colorant, and at least one polymer which is soluble both in water and in lower aliphatic alcohols. A method of microscopic staining comprises applying an aqueous solution or a lower aliphatic alcohol solution onto the side of a microscopic plate containing a test sample to be stained or onto the coating of such a thin cover sheet for use in the microscopic staining and contacting the test sample side of the microscopic plate and the coating side of the thin cover sheet.
摘要:
An apparatus in which a cordless flat iron is energized by a one or more high-frequency oscillators subjacent the normally horizontal work supporting surface of an associated ironing board. The sole plate of the iron consists of a thin layer of conductive material and is electrically and thermally insulated from the handle of the flat iron. The magnetic field of a polarity alternating at high frequency which is generated above the work supporting surface by the oscillator generates eddy currents in the sole plate when the flat iron is placed on the surface or separated from the surface by normally nonconductive textile material to be ironed.
摘要:
A motor vehicle bumper consisting of an approximately U-shaped relatively elastic base body, of an apron made of elastic plastic material which covers the forwardly disposed web of the base body and is drawn around up to the flanges adjoining the web on both sides, and of a cover constructed as decorative strip and covering at least the remaining visible part of the upwardly disposed flange; the cover is thereby pivotally connected with the base body exclusively by fastening elements disposed substantially in the axial direction of the two bumper supports while the upper flange is surrounded at the end face by clamps formed out of the cover within the area of the bumper supports and possibly also within areas displaced outwardly with respect thereto.
摘要:
A vehicle bumper formed by a rearwardly opening U-shaped profile member having arranged therein reinforcements fashioned as vertically arranged ribs extending in the longitudinal direction of the vehicle. The ribs are formed of a metallic material and are individually secured with the bumper which is fashioned from sheet steel.
摘要:
A method for operating an internal combustion engine in which a speed-based feature of the internal combustion engine, which is correlated with an indicated mean effective pressure of the fuel, is determined during the warm-up of the internal combustion engine and an ideal fuel quantity, which is to be injected into at least one combustion chamber of the internal combustion engine during the warm-up, is ascertained therefrom.