摘要:
Storage stable polyorganosiloxane-silicone resin mixtures contain: 1) 100 parts by weight of one or more liquid aminoalkyl-containing polyorganosiloxanes containing at least 80 mol % of units selected from units of the formulae Ia, Ib, II and III R12S1O(4-a-b)/2 (Ia), R1aR2bSiO(4-a-b)/2 (Ib), R33SiO(1/2) (II), R32R4SiO(1/2) (III), wherein, in the polydimethylsiloxanes, the average ratio of the sum of units of the formulae Ia and Ib to the sum of units of the formulae II and III is in the range from 0.5 to 500, the average ratio of units II to III in the range of 1.86 to 100, and the polydimethylsiloxanes have an average amine number of ≧0.01 mequiv/g, 2) at least 1 part by weight of one or more silicone resins, and 3) at most 5 parts by weight of water.
摘要:
In order to be able to carry out a multiplicity of continuously recurring activities at a continuous casting plant having at least one multifunction robot for implementing a plurality of different process-controlled or automated interventions at the continuous casting plant, at least one working region at the continuous casting plant and at least one multifunction robot assigned to each working region. The multifunction robot is arranged on a pivotable arm at a rotary column fastened to the pouring platform of the continuous casting plant and the robot can be pivoted with the pivot arm between a retraction position and a working position. The robot is also movable with respect to its arm.
摘要:
In the case of a strand guiding roller with at least one roller shell and with at least two supporting shafts, two supporting shafts being respectively connected in a rotationally fixed manner to a roller shell and each supporting shaft being rotatably supported in a supporting bearing, to achieve a type of construction that is simple and can withstand the high thermal and mechanical loading that occurs, it is proposed that the roller shell is connected in a rotationally fixed manner to the supporting shafts carrying it on both sides by shrink-fit connections or by press-fit connections.
摘要:
An internally cooled strand-guiding roll for a continuous casting installation, having a central rotatable shaft and at least one roll shell supported fixed against rotation on the shaft. To make the strand-guiding roll better able to withstand the mechanical and thermal stresses, to ensure that it is suitable for large strand widths and to enable maintenance work to be carried out, the roll shell has coolant passages passing through it, and the coolant passages are arranged in the roll shell at a constant distance from the cylindrical roll shell outer surface of the roll shell and preferably at the area between the shaft and the roll shell. It is preferable for at least one water guide ring to be arranged between the roll shell and the central shaft.
摘要:
Oil-in-water emulsions which contain (i) 100 parts by weight of a polydimethylsiloxane (P) having aminoalkyl groups and having an amine number of at least 0.1 meq/g of polydimethylsiloxane (P), composed of units of the general formula I R1aR2bSiO(4-a-b/2) (I), in which R2 are aminoalkyl radials of the formula II —R3—NR4R5, (II), (ii) protonating agent, (iii) water and (iv) not more than 5 parts by weight of emulsifier, are stable and provide for improved water repellency of porous and nonporous, absorptive and non-absorptive substrates treated therewith.
摘要:
A continuous casting mold for casting a strand has side walls defining an open-ended mold cavity. In order to increase the casting speed while maintaining a simple mode of construction of the continuous casting mold, the latter has the following characteristic features: at least two oppositely arranged side walls are rigidly fixed relative to each other about a pour-in section of the mold cavity and have a conicity decreasing in the running direction of the strand and, in a run-out section of the mold cavity arranged to follow the pour-in section in the running direction of the strand, include side wall sections movable relative to the strand and pressable at the strand by pressing devices, which side wall sections are arranged at a slighter conicity than the slightest conicity of the side walls of the pour-in section of the mold cavity.
摘要:
The present invention relates to organosilicon compounds containing glycoside radicals, having units of the formula ##STR1## in which R is identical or different and represents a hydrogen atom or an organic radical, a is 0, 1, 2 or 3, b is 0, 1, 2 or 3 and R.sup.1 can be identical or different and represents a radical of the formula Z--(R.sup.2 O).sub.c --R.sup.3 -- (II) in which Z represents a glycoside radical which is built up from 1 to 10 monosaccharide units, R.sup.2 can be identical or different and represents an alkylene radical, c is 0 or a number from 1 to 20, and R.sup.3 represents an alkylene radical, with the proviso that the sum of a and b is less than or equal to 3 and the organosilicon compound comprising units of the formula (I) contains at least one radical R.sup.1 per molecule.
摘要翻译:本发明涉及含有糖苷基的有机硅化合物,其具有式(I)的单元,其中R相同或不同并且表示氢原子或有机基团,a为0,1,2或3,b 是0,1,2或3,R1可以相同或不同,表示式Z-(R2O)c-R3-(Ⅱ)的基团,其中Z代表由1至10个单糖单元构成的糖苷基 R 2可以相同或不同,表示亚烷基,c为0或1〜20的数,R3表示亚烷基,条件是a和b的和小于或等于3, 包含式(I)单元的有机硅化合物每分子含有至少一个基团R 1。
摘要:
The invention relates to a cleaner and/or conditioner for glass-ceramic surfaces which contains epoxide funcitonal organopolysiloxanes. The cleaner and/or conditioner may additionally contain other components, such as non-reactive organopolysiloxanes, surfactants, organic solvents, scouring agents, acid, additional additives and water, the composition being present as an oil-in-water or a water-in-oil emulsion.