摘要:
This invention relates to hydrophobic free-flowing pellets having an average particle size of 5 to 150 .mu.m, which consist of one or preferably more hydrophilic inorganic powders having a particle size of >0 to 30 .mu.m and contain one or more hydrophobic polyorganosiloxanes in a quantity of 0.03 to 15% by weight, to a process for their production and to their use.
摘要:
The present invention provides free-flowing chemically resistant color granulates that are heat resistant and color stable in aggressive media. The color granulates comprise 20-94.8% by weight coloring bodies, 5-75% by weight of one or more frits, 0.220% by weight binder and 0.03-15% by weight organosilanes and/or polyorganosiloxanes. The glass frit comprises by weight 20-90% SiO.sub.2 +B.sub.2 O.sub.3 +Al.sub.2 O.sub.3, 0-6% Na.sub.2 O+Li.sub.2 O, 0-6% K.sub.2 O, 10-25% CaO+MgO+ SrO, 0-35% TiO.sub.2 +ZrO.sub.2, 0-40% Bi.sub.2 O.sub.3 +P.sub.2 O.sub.5 +V.sub.2 O.sub.5 +MoO.sub.3 +WO.sub.3 and 0-10% ZnO.
摘要翻译:本发明提供自由流动的耐腐蚀的彩色颗粒,其在侵蚀性介质中是耐热的和颜色稳定的。 着色颗粒包含20-94.8重量%的着色体,5-75重量%的一个或多个玻璃料,0.220重量%的粘合剂和0.03-15重量%的有机硅烷和/或聚有机硅氧烷。 玻璃料的重量为20-90%SiO 2 + B 2 O 3 + Al 2 O 3,0-6%Na 2 O + Li 2 O,0-6%K 2 O,10-25%CaO + MgO + SrO,0-35%TiO 2 + ZrO 2,0-40 %Bi2O3 + P2O5 + V2O5 + MoO3 + WO3和0-10%ZnO。
摘要:
The present invention relates to abrasion-resistant granular materials which are composed of one or more inorganic pigments, one or more inorganic elements and/or compounds with a Mohs hardness of at least 7 and one or more inorganic and/or organic binders and optionally frits and/or glasses and/or inorganic fillers, and to their production and their use.
摘要:
A process for preparing polyisocyanate-modified polycarboxylic acids by conversion of anhydride-group-free polycarboxylic acids with isocyanate-functional compounds. The process includes reacting A) an anhydride-group-free polycarboxylic-acid component with B) an isocyanate-functional component having an (average) isocyanate functionality of at least 1.8, at an equivalent ratio of carboxylic acid groups to isocyanate groups of from 1.2:1 to 120:1. The polyisocyanate-modified polycarboxylic acids are solid below 40° C. and liquid above 130° C., and have an average carboxylic acid functionality of at least 1.8, a content of free carboxylic acid groups of from 4.0 wt. % to 80.0 wt. % and a content of amide groups of from 0.4 wt. % to 32.5 wt. %.
摘要:
The present invention relates to novel radiation-curing powder coating binders containing maleic and/or fumaric acid esters and one or more amorphous or partially crystalline resins containing at least one group that reacts with ethylenically unsaturated compounds under the action of actinic radiation to form a polymer. The binders have a glass transition temperature ranging from 30 to 90° C. The binders can be used as a constituent in coating compositions.
摘要:
A ceramic raw material mixture with improved processing properties comprising at least two chemically different raw material components, wherein at least two of the raw material components have the same type of cation on the surface thereof, at least one of the raw material components being coated with said type of cation and the coating, calculated as cation oxide, amounting to 0.01 to 6% by weight, based on the coated component, and all the raw material components having a surface with an isoelectric point of .ltoreq.pH 7.
摘要:
The present invention relates to pulverent binders for powder coating compositions which contain oligo- and polyurethanes having (meth)acryloyl groups, are curable by means of high energy radiation and have an organic solvent content of less than 1 wt. %. The present invention also relates to a process for preparing these binders in the absence of an organic solvent and to their use in powder coating compositions for coating wood, metal, plastic, mineral and/or preprimed substrates.
摘要:
A frit composition for ceramic glazes is disclosed which is free of lead, cadmium and also barium. The composition contains SiO.sub.2, B.sub.2 O.sub.3, Al.sub.2 O.sub.3, alkali metal oxide, CaO, ZnO, and optionally MgO, SrO, TiO.sub.2, Bi.sub.2 O.sub.3, P.sub.2 O.sub.5 or ZrO.sub.2.
摘要翻译:公开了一种不含铅,镉和钡的陶瓷釉料玻璃料组合物。 该组合物含有SiO 2,B 2 O 3,Al 2 O 3,碱金属氧化物,CaO,ZnO,以及任选的MgO,SrO,TiO 2,Bi 2 O 3,P 2 O 5或ZrO 2。
摘要:
A titanium dioxide composition useful as the opacifier agent for vitreous enamels and fusion enamels comprises TiO.sub.2 predominantly in the form of isometric primary particles from 0.5 to 5.0 .mu.m in size, which are aggregated to predominantly spherolithic particles 1 to 100 .mu.m in diameter, with a BET surface of 1 to 4.5 m.sup.2 /g and an apparent density of 0.2 to 1.3 kg/l, is prepared by subjecting titanium dioxide hydrate having a BET surface of from 50 to 500 m.sup.2 /g to accelerated calcination at temperatures of 800.degree. to 1600.degree. C.