摘要:
There are described blue luminescent glasses having the following compositions(a) 0 to 90 mole % alkali metal oxide (sodium oxide, potassium oxide, lithium oxide), individually or several together, 0 to 90 mole % alkaline earth metal oxide (magnesium oxide, calcium oxide, strontium oxide, barium oxide), individually or several together, with the proviso that the magnesium oxide and/or calcium oxide can only be present in an amount of up to 25 mole % and at least 2 mole % of alkali metal oxide and/or alkaline earth metal oxide must be present(b)7 to 95 mole % silica0 to 70 mole % boron oxide (B.sub.2 O.sub.3)0 to 85 mole % aluminum oxide(c) 0.01 to 40 mole % lead oxide (PbO).
摘要翻译:描述了具有以下组成的蓝色发光玻璃:(a)0至90摩尔%的碱金属氧化物(氧化钠,氧化钾,氧化锂),单独或几个,0至90摩尔%的碱土金属氧化物(氧化镁, 氧化钙,氧化锶,氧化钡),条件是氧化镁和/或氧化钙的存在量最多只能为25摩尔%,至少2摩尔%的碱金属氧化物 和/或碱土金属氧化物必须存在(b)7〜95摩尔%二氧化硅0〜70摩尔%氧化硼(B 2 O 3)0〜85摩尔%氧化铝(c)0.01〜40摩尔%氧化铅(PbO)。
摘要:
Encapsulation pigments comprising chromophoric particles embedded in glaze-stable casings are prepared by means of calcination from the appropriate initial products. High yields and strong color intensities are obtained if the chromophoric substance or its initial compounds are bound in and/or to a zeolite and are calcined in this form with the remaining constituents.
摘要:
Mixtures of sulfurous triazine compounds and methods of preparing these compounds with the general formula ##STR1## in which R.sup.1, R.sup.2 =H,R.sup.2 =benzyl,R.sup.2, R.sup.3, R.sup.4 =C.sub.1 -C.sub.8 -alkyl, allyl, C.sub.3 -C.sub.8 cycloalkyl, the latter unsubstituted or substituted with 1-3 methyl groups, 2-hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl orR.sup.3 and R.sup.4 (together): C.sub.4 -C.sub.6 -alkylene, --(CH.sub.2 --CHX).sub.2 Y withX=H, CH.sub.3, Y=O,S,S.sub.a : Polysulfide chain with 2-10 S atoms (i.e. 2.ltoreq.a.ltoreq.10), in which the individual polysulfides are present in such concentrations that the statistical average value of "a" is a whole or fractional numerical value in the range from 2 to 5., characterized in that a triazine compound of the general formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 have the meanings indicated above is reacted with an ammonium polysulfide or alkali polysulfide and dissolved in a protic polar solvent, especially water, at a temperature of 80.degree. to 140.degree. C.
摘要:
There are prepared luminescent materials based on cadmium borate activated with manganese which is insensitive to impurities, temperature stable, not sensitive to grinding, and stable to ceramic glazes having the composition. In the preparation, the manganese activator is added in the form of a zeolite.
摘要:
There are prepared zeolite molded articles which also contain alkali silicate and/or alkaline earth silicate and mineral fibers and/or carbon fibers in addition to the zeolite.
摘要:
Silicate-bound zeolite granulates are disclosed wherein the zeolite contains a cation which is not present in the binder, and where the zeolite can also contain the binder cation. The granulates are produced by placing powdered zeolite in a mixer, adding sodium silicate solution, mixing until zeolite granulates with a grain size of at least 0.1 mm are obtained, optionally after-rolling the zeolite granulates. The moist zeolite granulates can be initially dried at temperatures of 20 degrees to 39 degrees C., where the carbon dioxide content of the drying air is adjusted to less than 200 ppm. Thereafter, a second drying step can be carried out at temperatures of 40 degrees to 120 degrees C. as well as a third drying stage at 121 degrees to 200 degrees C. under otherwise identical conditions. The products may be activated at temperatures of 600 degrees C. maximum. The zeolite granulates thus obtained are then treated with a first aqueous metal salt solution, washed and then optionally treated with a second aqueous metal salt solution, washed and dried again at 40 degrees to 200 degrees C., preferably 100 degrees to 120 degrees C., and then optionally calcined to 300 degrees to 650 degrees C.
摘要:
Phenylene group-containing organosilanes represented by the formula: ##STR1## where in each case all three possible isomers in relation to the position of the R.sub.3 Si-R.sup.1 substituents can be present concurrently, R.sup.1 represents --CH.sub.2 --CH.sub.2 -- or CH.sub.3 CH>, and R.sup.2 represents chloride or an alkoxy group. Processes for the production of the organosilanes and the use of these substances for the production of the corresponding organopolysiloxanes are also disclosed.
摘要:
Phenylenesulfonate group-containing organopolysiloxanes are disclosed consisting of units represented by the formula: ##STR1## in which R.sup.1 represents --CH.sub.2 --CH.sub.2 -- or CH.sub.3 --CH
摘要:
A method for the preparation of 3-chloropropyltrichlorosilane is carried out by conversion of trichlorosilane with allylchloride in the presence of a platinum containing polymeric organosiloxane-ammonium compound containing units represented by the structural formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 represent a group of the formula:R.sup.5 --SiO.sub.3/2 (2)wherein R.sup.5 denotes an alkylene group and the free valences of the oxygen atoms are saturated by silicon atoms of further groups of the formula (2), optionally with incorporation of crosslinking agents, R.sup.4 has the same meaning as R.sup.1, R.sup.2 and R.sup.3 or hydrogen, alkyl, cycloalkyl or benzyl, Y.sup.x- represents PtX.sub.4.sup.2- or PtX.sub.6.sup.2- (X is Cl or Br) and can also be an inorganic 1 to 3 functional anion of a protonic acid which yields stable salts with amine bases or the hydroxy group, and x is a number from 1 to 3.
摘要:
There are described luminescent materials activated with lead upon excitation with long wave and short wave ultraviolet rays emit in the blue-green region, have long afterglow times, can be prepared from components which do not have high purity, are not susceptible to pulverizing, and are stable to the customary ceramic glazes. They consist of (or consist essentially of):10 to 89.9 mole % zirconium oxide (ZrO.sub.2)5 to 85 mole % boron oxide (B.sub.2 O.sub.3)5 to 85 mole % silicon dioxide (SiO.sub.2)0.1 to 20 mole % lead oxide (PbO)0 to 15 mole % sodium oxide (Na.sub.2 O)0 to 15 mole % potassium oxide (K.sub.2 O) and0 to 5 mole % aluminum oxide (Al.sub.2 O.sub.3).
摘要翻译:描述了在长时间的波长和短波紫外线激发时用铅激发的发光材料在蓝绿色区域发射,具有长的余辉时间,可以由不具有高纯度,不易于粉碎的组分制备,以及 对于习惯的陶瓷釉是稳定的。 它们由(或基本上由...组成):10至89.9摩尔%氧化锆(ZrO 2)5至85摩尔%氧化硼(B 2 O 3)5至85摩尔%二氧化硅(SiO 2)0.1至20摩尔%氧化铅(PbO) 0〜15摩尔%的氧化钠(Na 2 O)0〜15摩尔%的氧化钾(K 2 O)和0〜5摩尔%的氧化铝(Al 2 O 3)。