Abstract:
Silanised, structurally modified silicas, characterised by groups fixed on the surface, the groups being alkylsilyl (SiCnH2n+1, with n=2-18). They are produced in that pyrogenically produced silicas are treated with the silanising agent and structurally modified. They are used to improve scratch resistance in lacquers.
Abstract translation:硅烷化的结构改性二氧化硅,其特征在于固定在表面上的基团,所述基团是烷基甲硅烷基(n为2-18的烷基硅烷基)(SiC n H 2n + 1)。 它们的生产是用热解法生产的二氧化硅用硅烷化剂处理并进行结构改性。 它们用于改善漆中的耐刮擦性。
Abstract:
Radiation-curing coating systems which contain a silanized silica, where the silane is hexamethyldisilazane, 3-methacryloxypropyltrialkoxysilane and/or glycidyloxypropyltrialkoxysilane as the silanizing agent. The radiation-curing coating systems can be used for coating derived timber boards, solid wood, wood veneers, parquet, decorative papers, decorative films, thermoplastics and thermosetting plastics, mineral and polymeric glasses, metals (for example aluminium, high-grade steel, phosphated, chromated and galvanized steel sheets, copper), lacquered surfaces, printing inks and leather.
Abstract:
A boron oxide-silicon dioxide mixed oxide which has a BET surface of less than 100 m.sup.2 g, and optionally containing oxides of aluminium, titanium or zirconium, is prepared pyrogenically by flame hydrolysis. The mixed oxide is used in glass making.
Abstract:
Pyrogenically prepared, surface modified aluminum oxide, having the following physical chemical properties: Surface area [m2/g] 50 to 150 Tamped density [g/L] 25 to 130 Drying loss [%]less than 5 Loss on ignition [%]0.1 to 15 C content [%]0.1 to 15 pH value3 to 9 is prepared by treating pyrogenically prepared aluminum oxide with a surface modifying agent.
Abstract:
Pressed objects (slugs) of pyrogenically produced oxides such as SiO.sub.2, Al.sub.2 O.sub.3 and TiO.sub.2 are produced using a silica sol and water. As molding assistants thereby there is employed a polyhydric alcohol, e.g. glycerine or sorbitol. The water can be added adsorbed on a pyrogenically produced hydrophobized silica. The pressed object obtained can be used inter alia as catalyst carrier.
Abstract:
Silanised, structurally modified silicas, characterised by groups fixed on the surface, the groups being alkylsilyl (SiCnH2n+1, with n=2-18). They are produced in that pyrogenically produced silicas are treated with the silanising agent and structurally modified. They are used to improve scratch resistance in lacquers.
Abstract translation:硅烷化的结构改性二氧化硅,其特征在于固定在表面上的基团,所述基团是烷基甲硅烷基(SiCnH 2 n + 1,n = 2-18)。 它们的生产是用热解法生产的二氧化硅用硅烷化剂处理并进行结构改性。 它们用于改善漆中的耐刮擦性。
Abstract:
Silanized, structurally modified, pyrogenically produced silicas, characterised by groups fixed to the surface, wherein the groups are dimethylsilyl and/or monomethylsilyl, are produced in that pyrogenically produced silica is treated by a known method with dimethyldichlorosilane and/or monomethyltrichlorosilane, the groups dimethylsilyl and/or monomethylsilyl being fixed on the surface of the pyrogenic silica, and is then structurally modified and optionally post-ground. They are used to improve scratch resistance in lacquers.
Abstract:
Lacquer formulations containing: from 5 to 99.5 wt. % of solids of a polymer component or of a mixture of two or more physically or chemically crosslinking polymer components, (binder components and hardener components), from 0 to 80 wt. % of a low molecular weight component acting as solvent or of a mixture of such low molecular weight components, from 0.5 to 50 wt. % of a silanised, structurally modified pyrogenic silica to the surface of which there are attached alkylsilyl groups (SiCnH2n+1, where n=from 2 to 18) and/or dimethylsilyl groups and/or monomethylsilyl groups, from 0 to 10 wt. % of commercially available additives.
Abstract translation:漆制剂含有:5〜99.5重量% 聚合物组分或两种或更多种物理或化学交联的聚合物组分(粘合剂组分和硬化剂组分)的混合物的固含量为0至80wt。 用作溶剂或这种低分子量组分的混合物的低分子量组分的%,为0.5至50wt。 %的硅烷化结构改性的致热二氧化硅,其表面附着有烷基甲硅烷基(SiC n H 2n + 1,其中n = 2至18)和 /或二甲基甲硅烷基和/或单甲基甲硅烷基,0〜10wt。 %的市售添加剂。
Abstract:
A boron oxide-silicon dioxide mixed oxide which has a BET surface of less than 100 m2g, and optionally containing oxides of aluminium, titanium or zirconium, is prepared pyrogenically by flame hydrolysis. The mixed oxide is used in glass making.
Abstract:
Surface-modified, pyrogenically produced mixed oxides which contain two or more components of the series SiO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, Nb.sub.2 O.sub.5, V.sub.2 O.sub.5, WO.sub.3, SnO.sub.2, GeO.sub.2 and have been surface-modified with one to several compounds of the following groups:(a) organosilanes of the type (RO).sub.3 Si(C.sub.n H.sub.2n+1),(b) R'.sub.x (RO).sub.y Si(C.sub.n H.sub.2n+1),(c) X.sub.3 Si(C.sub.n H.sub.2n+1),(d) X.sub.2 (R')Si(C.sub.n H.sub.2n+1),(e) X(R').sub.2 Si(C.sub.n H.sub.2n+1),(f) (RO).sub.3 Si(CH.sub.2).sub.m --R',(g) (R").sub.x (RO).sub.y Si(CH.sub.2).sub.m --R',(h) X.sub.3 Si(CH.sub.2).sub.m --R',(i) (R)X.sub.2 Si(CH.sub.2).sub.m --R',(j) (R).sub.2 X Si(CH.sub.2).sub.m --R',(k) Silazanes of the type ##STR1## (l) Cyclic polysiloxanes, (m) Polysiloxanes or silicone oils.
Abstract translation:表面改性,热解法生产的混合氧化物,其包含SiO 2,Al 2 O 3,TiO 2,ZrO 2,Fe 2 O 3,Nb 2 O 5,V 2 O 5,WO 3,SnO 2,GeO 2系列中的两种或更多种组分的两种或更多种组分,并已用一至几种以下化合物进行了表面改性 (a)有机硅烷类型(RO)3Si(CnH2n + 1),(b)R'x(RO)ySi(CnH2n + 1),(c)X3Si(CnH2n + 1),(d)X2 R')Si(CnH2n + 1),(e)X(R')2Si(CnH2n + 1),(f)(RO)3Si(CH2)m-R',(g)(R“ RO)ySi(CH 2)m -R',(h)X3Si(CH 2)m -R',(i)(R)X2Si(CH 2)m -R',(j)(R)2 X Si -R',(k)(1)的硅氮烷环状聚硅氧烷,(m)聚硅氧烷或硅油。