摘要:
New products having excellent sizing action, in particular on paper are obtained by reacting .alpha.,.beta.-unsaturated carboxylic acids or their reactive derivatives (such as, for example, esters or anhydrides) with amide-amines of higher carboxylic acids at temperatures above 120.degree. C.The new products are used in size formulations, preferably as aqueous alkaline and, in particular, aqueous ammoniacal, dispersions.
摘要:
A trip device serves to cause at least one function on one or more means moved along a predetermined path of motion. It comprises an mounting rail on which a plurality of trip units and at least one bus station are mounted. The bus station is connected by a serial bus with a control means and is connected by flexible control cables with several trip unit. The bus station for its part produces suitable actuating signals from serial bus signals intended for the trip units, such actuating signals being fed to the respective trip units by means of the flexible control cables. On the other hand the bus station produces serial bus signals on the basis of sensor signals arriving from the trip units. Generally the trip device possesses a straightforward structure, renders possible high speeds of operation and is easily serviced.
摘要:
The invention relates to new alkyl ethers and phosphoric acid esters of Cassia tora polygalactomannans and their use, alone or in combination with other thickening agents, as thickening agents.
摘要:
The light fastness of polyamide dyeings can be improved by treating polyamide fibre materials, before, during or after dyeing, with copper complexes of the reaction products of salicylaldehydes with amines (for example cyclohexylamine), or with copper complexes of o-hydroxybenzophenones.
摘要:
A shutter device for a lithography apparatus includes a housing for maintaining an ultrahigh vacuum. A disk within the housing is rotatable about a rotation axis. The disk has at least one opening arranged on a circumferential line around the rotation axis and serving for transmitting ultraviolet light. A lithography apparatus includes such a shutter device, as well as a light source for ultraviolet light, an optical unit for imaging a pattern onto a target surface, and a camera device for detecting the imaged pattern.
摘要:
When a suspension is exposed to a field of ultrasound, a voltage can be tapped from two electrodes whose distance apart is an odd multiple of half ultrasonic wavelengths, and this voltage can be used as a controlling factor for the addition of, preferably, retention and flocculating agents to the suspension. The process is particularly suitable for fibre suspensions for the purpose of monitoring the starting process in paper machines and for rapid operating control.