摘要:
A protective cover for optical means, such as binocular optical means, having a pair of exposed lens portions which are spaced apart, comprising first and second cover bodies, each having a lens cap portion for being removably secured over a lens portion of the binoculars. Each of the cover bodies has a connecting portion extending from its cap portion. An attachment means is provided for securing the connecting portions of the bodies to the binoculars at a location intermediate its lens portions. The attachment means allows movement of each of the cap portions between a first position proximate to one of the lens portions and a second position away from and intermediate the lens portion of the binoculars. The attachment means urges each of the bodies towards its second position upon being displaced therefrom, so as to avoid interfering with the binoculars when in use.
摘要:
Reactive dyestuffs which are free from anionic groups, in particular sulpho and carboxyl groups, and contain a basic group and a halogenotriazinyl radical, and their use for dyeing and printing synthetic fibre materials. The dyeing obtained are distinguished by good fastness properties, of which, in addition to fastness to sublimation, light and dry cleaning, fastness to wet processing is to be singled out in particular.
摘要:
Dyestuffs of the formula ##STR1## wherein X, R, R.sub.1, R.sub.2 and R.sub.3 have the meaning given in the description,and their use for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and fabrics of wool, silk or synthetic polyamide or polyurethane fibres, and for dyeing and printing natural or regenerated cellulose with dyeings and prints which are fast to washing.
摘要:
##STR1## wherein n, m, p, X, R 1 , R 2 and R 3 have the meaning indicated in the description, and their use for dyeing and printing materials containing hydroxyl groups or containing amide groups, such as textile fibres, filaments and fabrics made of wool, silk and synthetic polyamide fibres and polyurethane fibres and for the wash-fast dyeing and printing of natural or regenerated cellulose.
摘要:
Dyestuffs of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, m, n, p and X have the meaning given in the description,and their use for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and woven fabrics of wool, silk or synthetic polyamide or polyurethane fibres, and for dyeing and printing natural or regenerated cellulose in dyeings and prints which are fast to washing. Blue dyeings and prints which are fast to light and wet processing are obtained.
摘要:
The dyestuff of the formula ##STR1## is suitable for dyeing synthetic polyamide textile materials, in particular for combination dyeings because of its favorable uptake properties.
摘要:
An underwater camera or instrument having a depressible shutter release button or similar actuator is housed within a flexible plastic waterproof housing. A toggle lever is mounted on the camera with one end overlying the button. Surrounding the lever is a frame member that extends upwardly to separate the housing from the lever so as to prevent water pressure acting on the housing from applying a force on the button.
摘要:
The preparation is described of compounds of the structure ##STR1## in which the substituents have the meanings indicated in the descripion. The compounds, which are in part new, are used as intermediate products for dyestuffs.
摘要:
Dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sub.3 is phenyl substituted with sulpho have the meaning given in the description, and their use for the dyeing and printing of textile materials containing hydroxyl groups and containing nitrogen, especially textile materials consisting of natural and regenerated cellulose, and also those consisting of wool, silk and synthetic polyamide and polyurethane fibers. Dyeings obtained distinguish themselves by good fastness properties and high brilliancy.