摘要:
A filter comprising a polymer material comprising a polymer matrix such as polyacrylonitrile containing dispersed metal oxide particles. The metal oxide particles are for example ferric oxide particles, and the polymer material contains generally 0.25-3% by weight of these particles. The filters are resistant to thermo-oxidation and have reduced shrinkage or degradation.
摘要:
Aminated cellulose fiber obtained by adding one or more starches etherified with C.sub.2 -C.sub.5 -alkylamines which may additionally be substituted in the alkyl moiety by 1 to 2 further hydroxyl and methoxy groups and whose amino group is a primary or C.sub.1 -C.sub.4 -alkyl-substituted secondary, tertiary or quaternary amino or ammonium group and having a degree of substitution between 0.1 and 3 to a viscose dope, an alkali cellulose or a cellulose solution and spinning fiber therefrom.
摘要:
Aminated cellulosic synthetic fibers are produced by adding an amine-substituted cellulose derivative to a viscose or an alkali cellulose and spinning fibers by the viscose spinning process, or by adding said cellulose derivative to a cellulose solution and spinning fibers from said solution.
摘要:
Modified rayon is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to an alkali cellulose solution or material, xanthating and spinning fibers by the viscose spinning process, wherein the modifier is an amine of the formula (1a), (1b), (1c), (1d) or (1e) ##STR1## The modified rayon produced in this way can be dyed with reactive dyes without addition of electrolyte salt or alkali and have significantly more affinity than conventional viscose fibers.
摘要:
A process and apparatus for guiding a continuous moving tow in synthetic fiber manufacture. The profile (the thickness distribution and width) and the position of the tow are continuously sensed in a non-contact manner and an appropriate electrical signal is generated. This electrical signal is used to control the profile and the position of the tow in such a way that its profile and position stay within predetermined target value ranges. The tow geometry is preferably sensed using a CCD camera, while the tow geometry is controlled using tow-engaging deflecting means. In this way it is possible to optimize tow profile and position, for example for entry into a stuffer box (FIG. 1).
摘要:
The invention relates to a process for preparing wet- or dry-spun filaments and fibers of polymers which consist to more than 50% by weight of acrylonitrile units and which are continually treated with an aqueous solution containing copper(I) ions during the fiber production process but before a first heat treatment above 100.degree. C. and the copper content in the fibrous material is fixed by heating to above 60.degree. C., preferably to above 100.degree. C. The filaments and fibers thus obtained can be dyed with acid dyestuffs, have bactericidal properties, and can be subjected to accelerated pre-oxidation.
摘要:
To increase the responsiveness of a vehicle alarm system to, for example, unauthorized entry through windows, jacking up for removal of parts or vehicle theft as well violent impact by another vehicle, at least one position sensitive sensor has its output signal, which represents the instantaneous position of the vehicle stored after activation of the alarm system. Any change in that position is detected and triggers a warning device when the deviation exceeds a predeterminable amount. The position sensitive sensor may be a fluid-filled vessel the internal resistance of which is measured in a resistance bridge or it may be a variable inductance sensor which is connected to a frequency generator whose output signals are counted and compared with a given value. The system according to the invention may also serve as an accelerometer.
摘要:
A method for recognizing oil top-up quantities is provided. The method records a multiplicity of oil levels under specific operating conditions over time; calculates an oil-mass average value X.sub.z of the oil top-up quantity over z instantaneous measurements xmom in each case; calculates a compensating function describing the variation in an oil mass xh over time using a specific number of hourly oil masses xh; calculates a difference DFA from an end point xlang of the compensating function and from the penultimate oil-mass average value according to a function activates a discrimination function for checking whether the difference DFA is greater than a first oil-mass limit value M1; and if so, a special case is recognized and a processing function for calculating the oil top-up quantity in the special case is started; and if not, a further discrimination function is started, for checking whether the difference DFA is greater than a second oil-mass limit value M2 and there is a specific communication signal between the vehicle and driver. If the result of the check is that the difference DFA is greater than the second oil-mass limit value M2, a special case is recognized and the processing function for calculating the oil top-up quantity in the special case is started. If the interrogation result is negative, a processing function for calculating the oil top-up quantity in the normal case is activated.
摘要翻译:提供了一种识别加油量的方法。 该方法在特定操作条件下随时间记录多种油位; 在每种情况下,通过z瞬时测量xmom计算油补充量的油质量平均值+ E,ovs X + EE z; 使用特定数量的小时油质量xh计算描述油质量xh随时间的变化的补偿函数; 根据功能计算与补偿功能的终点xlang的差分DFA以及根据功能的倒数第二油质量平均值,激活用于检查差分DFA是否大于第一油质量限制值M1的判别功能; 如果是这样,则识别出特殊情况,开始计算特殊情况下的补油量的处理功能。 如果不是,则开始进一步的识别功能,用于检查差分DFA是否大于第二油质量极限值M2,并且在车辆和驾驶员之间存在特定的通信信号。 如果检查结果是差值DFA大于第二油质量限制值M2,则识别出特殊情况,并开始计算特殊情况下的补油量的处理功能。 如果询问结果是否定的,则在正常情况下激活用于计算补油量的处理功能。
摘要:
Sulfonated regenerated cellulose fiber obtained by adding a modifier to a viscose dope or alkali cellulose or cellulose solution and spinning fiber therefrom, wherefor the modifier is a starch etherified with C.sub.2 -C.sub.5 -alkylsulfonic acid radicals and having a degree of substitution of 0.1 to 3, a starch admixed with vinylsulfonic acid or a styrenesulfonic acid, or a polymeric styrenesulfonic acid or polymeric vinylsulfonic acid.
摘要:
A method of treating a surface of a fiber, e.g. cellulosic fiber, with a finish in which the surface finish is applied as an aqueous emulsion stabilized at a first pH value and at the latest when applied to the fiber the emulsion is caused to destabilize by a change in the first pH value. The invention also relates to cellulosic fiber and threads thereof and to tampons made from cellulosic fiber.