摘要:
Organosiloxane amine copolycondensates as statistic or block copolycondensates or mixtures thereof consisting of the units ##STR1## in which R.sup.1 to R.sup.5 is ##STR2## and R.sup.6 is bound directly to the nitrogen atom or the double-bonding X group and is alkylene, cycloalkylene or ##STR3## in which n is 1 to 6 and m 0 to 6. The free valences of the oxygen atoms bound to the silicon atom are saturated by silicon atoms of further groups of formula III, optionally with the inclusion of cross-linking agents, X stands for ##STR4## in which R" is H or alkyl. In addition, preparation methods and the use of the products for the removal of dissolved metals from liquid phase or for the adsorption of gaseous compounds.
摘要:
Glossy precious-metal preparations containing of one or more organo-precious-metal compounds, an organic carrier and a fluxing agent composed of organic metal compounds are used for microwave-resistant decorations on silicate tableware, the fluxing agent contains an organic silicon compound with three hydrolyzable groups at the silicon atom in a proportion of 0.1 to 2 moles of silicon per mole of precious metal.
摘要:
Spherical, polymeric, tertiary or secondary organosiloxane amine compounds comprising: ##STR1## units in which R.sup.1 and R.sup.2 stand for a group: ##STR2## R.sup.4 is an alkylene grouping and the oxygen atoms are saturated by silicon atoms of other groups (II), with the optional inclusion of cross-linking agents, R.sup.3 is equal to R.sup.1 and R.sup.2 or stands for hydrogen, an alkyl, cycloalkyl or the benzyl group. Also disclosed is a method for the preparation of the compounds in spherical form and the use of these products for removing acids from liquids and gases as well as for the adsorption of gaseous organic compounds.
摘要:
A catalyst for the production of hydrocarbon consists essentially of crystalline aluminum silicate, at least one compound of the metal zinc and/or cadmium and additionally silica. The catalyst is produced by heating a crystalline aluminum silicate, in a given case partially or completely converted to the hydrogen form, with a zinc and/or cadmium compound and molding with a silica containing binder.
摘要:
R.sup.4 --Si(OR).sub.3R.sup.4 =alkylene, cycloalkylene or an entity of the formula: ##STR2## whereby n=1-6, R=alkyl containing C.sub.1 -C.sub.3 and R.sup.3 =R.sup.2 or H. A method of preparing these compounds is also disclosed.
摘要:
The invention is directed to a method of preparing sulfenic acid chlorides and sulfenic acid esters with hydrolyzable silyl groups in which an oligosulfane containing silyl groups is chlorinated, the sulfenic acid chloride produced is separated and converted by reaction with an alkali alcoholate to the corresponding sulfenic acid ester.
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:
There is prepared an aqueous suspension which in addition to water, consists of 2 to 50 weight % of a mixture of bentonite and inorganic fibers, with the portion of inorganic fiber being 1 to 30 weight % and the portion of bentonite being 1 to 30 weight % and wherein the total amount of solids does not exceed 50 weight %. With the suspension there is attained an improvement of the mechanical properties of thermal insulating molded objects which are employed for thermal insulation and which for example, contain pyrogenically produced silica as a filler by delivery of this suspension on the thermal insulating plate. The suspension can also be delivered on thermal insulating molded bodies on which there is pressed a fiber net or a fiber felt. After applying the suspension several thermal insulating molded bodies can be joined together where the coating formed consisting of bentonite and inorganic fibers acts as binder. The heat insulating molded article in addition to this layer, can have one or more additional coatings based on organic or inorganic lacquer systems, silicone compositions or low melting glazes.
摘要:
Platinum and/or palladium containing organopolysiloxane-ammonium compounds containing units represented by the structural formula: ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 represent:R.sup.5 --SiO.sub.3/2 (2)wherein R.sup.5 is an alkylene group and the free valences of oxygen are satisfied by silicon atom and additional groups of the structural formula (2), optionally with the introduction of a crosslinking agent,R.sup.4 can be R.sup.1, R.sup.2, R.sup.3 or hydrogen, alkyl, cycloalkyl or benzyl,Y.sup.x- is MeX.sub.4.sup.2- or MeX.sub.6.sup.2-, wherein Me is platinum or palladium andX is chlorine or bromine, and can further denote a 1 to 3 valent anion of a protonic acid capable of forming a stable salt with an amine, or the hydroxy group, andx is a number from 1 to 3. Methods for the obtaining the polymeric organosiloxane-ammonium-noble metal complexes and as well as the use thereof as catalysts for hydrosilylation and hydrogenation reactions are disclosed.
摘要:
Polymeric complex compounds of molybdenum, tungsten, manganese, rhenium and of the metals of the sub-groups VIII and I of the Periodic Table of Elements, which complex compounds have a silica-type structure are disclosed. At least one amine ##STR1## is bonded coordinately to the central metal atom. The atomic ratio of metal to nitrogen is from 1:1 to 1:10.sup.6. The required charge compensation is effected by means of an anion. In (1), R.sup.1 and R.sup.2 represent a group ##STR2## and R.sup.4 is an alkylene grouping. The oxygen atoms are saturated by silicon atoms of further groups (2), if appropriate with incorporation of crosslinking agents. R.sup.3 may have the meaning of R.sup.1 and R.sup.2, or represents hydrogen, an alkyl group, a cycloalkyl group or the benzyl group. The polymers can contain several metals. The invention also relates to processes for their preparation, and uses in catalysis.