摘要:
One-component heat-curable sealant composition for the protection of exposed dental surfaces, comprising (a) a polymerisable monomer and/or oligomer which has at least two polymerizable double bonds per molecule, and (b) an initiator system comprising benzoylperoxide in an amount of at least 2 wt.-% based on the total composition.
摘要:
A double-layer capacitor includes a first electrode having a first polarity, a second electrode having a second polarity, the first polarity being different from the second polarity, and an electrolyte that is in contact with the first electrode and the second electrode. The first electrode has a first charge of the first polarity and the second electrode has a second charge of the second polarity, and maximum values of the first charge and the second charge are substantially equal.
摘要:
A process for the preparation of a polymerizable dental composition comprising the steps of (a) preparing a liquid mixture comprising (i) 1 to 99% w/w of a hybrid monomer component containing at least one hybrid monomer compound having one hydrolysable siloxane group and at least one polymerizable organic moiety, and (ii) 99 to 1% w/w of a monomer component polymerizable with the polymerizable organic moiety of the hybrid monomer compounds; and (b) adding at least a stoichiometrically sufficient amount of water to the mixture to hydrolyse the hydrolysable siloxane group of the hybrid monomer compound and to form spherical polymerizable nanoparticles having an average particle size of from 1 to 100 nm dispersed in the monomer component, whereby the nanoparticles have a structure with Si—O—Si bonds and peripherally exposed polymerizable organic moieties.
摘要:
For a device (4) for the performance adaptation of a liquid ring pump, said liquid ring pump (1) comprising a cylindrical workspace (6) for conveying a conveyed fluid (15) between an intake socket (16a) and a pressure socket (18a). The device (4) comprises a control unit (28), control line (22) and a control element (26) connected with the workspace (6). The device is designed to vary the amount of operating liquid of the liquid ring pump (1) during operation (running) of said pump. Also, a method for adapting the performance of the liquid ring pump (1), which is performed in particular via the device (4) is specified.
摘要:
One-component heat-curable sealant composition for the protection of exposed dental surfaces, comprising (a) a polymerisable monomer and/or oligomer which has at least two polymerizable double bonds per molecule, and (b) an initiator system comprising benzoylperoxide in an amount of at least 2 wt.-% based on the total composition.
摘要:
One-component heat-curable sealant composition having a viscosity of at most 5 Pas (23° C.) for the protection of exposed dental surfaces, comprising (a) a polymerisable monomer and/or oligomer having at least two polymerizable double bonds per molecule, and (b) an initiator system comprising a thermally stable initiator having a 10 hour half-life decomposition temperature of from 95° C. to 135° (0.1M in benzene); wherein the composition further contains a precursor for a filler which is an alkoxysilane compound undergoing polycondensation reactions during heat curing of the composition, thereby forming a filler.
摘要:
An electrode with a flat-area, electrically conductive collector (1) is proposed in which a corrosion-resistant, metallically conductive inner intermediate layer (5) is applied seamlessly to at least one main surface of the collector and a corrosion-resistant, metallically conductive outer intermediate layer (10) is applied seamlessly to the inner intermediate layer. The outer surface of the outer intermediate layer is covered seamlessly by an electrode layer (15) containing carbon. Such an electrode according to the invention has increased stability.
摘要:
The modified magazine bottom (32 is provided with the two lateral cheeks (33′ or 33″) and the prisms (34′ or 34″) which provide for a slide fit in combination with lateral grooves existing on a pistol stock. The magazine with the magazine bottom (32) can thereby be fastened to the pistol stock and used as a support grip. The latch (32f) acts as a spring catch in combination with the transverse groove at the bottom of the pistol stock.
摘要:
Homogeneous amorphous aluminum phosphate composition with a surface of 100 to 300 m.sup.2 /g and a pore volume in pores with diameters of less than 1000 nm of at least 1.0 cm.sup.3 /g, in which phosphorus and aluminum are present in a molar ratio in the range from 0.9:1 to 1:1 and which is characterized in that it is present in the form of microspherical particles with a particle size of 10 to 20 .mu.m and displays a bimodal pore-size distribution in the pore-diameter range of less than 1000 nm. Also described is a process for the production of the novel aluminum phosphate composition, which is suitable in particular as a cracking catalyst, as a catalyst support, especially for polymerization catalysts, as a flatting agent, as an adsorption agent and as a thickening agent.
摘要:
The invention relates to a carrier device for a magnetic-electric transducer in a read/write unit operating with magnetic storage plates, with a carrier element which can deflect in a direction perpendicular to the plane of the magnetic storage plates.