摘要:
A curable epoxy resin composition comprising at least one oxazolidone-modified epoxy resin which is the reaction product of an epoxy resin and an isocyanate, at least one maleimide, at least one cyanate ester, and optionally at least one non-oxazolidone containing epoxy resin, wherein at least one component of the composition comprises halogen or phosphorous to provide flame retardancy to the cured composition, a method of making the composition and methods of making a prepreg and an electrical laminate using the composition.
摘要:
An inner filter for an aquarium has means forming a pump chamber, a filter chamber, a suction opening, and outlet opening, a suction passage which communicates with the pump chamber and the filter chamber and in which water is aspirated through the suction opening, a pressure chamber which communicates with the pump chamber and the outlet opening, a pump wheel, an electric motor having a rotor which drives the pump wheel in the pump chamber and also having a stator and a housing having three releasable and again assembleable segments, the segments including a first segment which accommodates the stator with an electric conductor, a second segment which accommodates the rotor with a bearing axles and bearings and also accommodates the pump wheel, the pump chamber, the filter chamber, the suction passage and the pressure passage, and a third segment which is placeable on the second segment and formed as a cover and has the outlet opening connectable with the pressure passage, the suction opening which is connectable with the filter chamber being provided in the region of one of the third segment and the first segment.
摘要:
Aromatic dicyanate compounds which comprise aliphatic moieties having at least about six carbon atoms and resins and thermoset products based on these compounds.
摘要:
A filter for aquarium operating in accordance with the lifting-lowering principle comprises a housing with at least one filter compartment for a filter material, a pump which aspirates water after passing through the filter compartment through a suction conduit and supplies the water back into an aquarium, at least one auxiliary chamber supplied with water and a float-controlled valve device controlling an outlet of the auxiliary chamber and communicating with the suction conduit, an auxiliary housing in which the auxiliary chamber is provided and supplied with water filtered after passing of the filter compartment in accordance with the principle of communicating pipes. A passage which is connected with the suction conduit has a valve opening which is alternatingly closeable and openable by a float-controlled valve closing member of the valve device. In another embodiment, a supply is formed as a passage which passes through the filter compartment and is sealed from the latter and opens in a bottom chamber provided in the housing under a lowermost one of the filter compartments, so that the aspiration of the supplied water is performed from below and from the bottom chamber through the filter compartment upwardly with accompanying filtering.
摘要:
Aromatic dicyanate compounds which comprise aliphatic moieties having at least about six carbon atoms and resins and thermoset products based on these compounds.
摘要:
Aromatic polycyanate compounds which comprise cycloaliphatic moieties, a process for the production thereof and resins and thermoset products which are based on these compounds.
摘要:
Aromatic polycyanate compounds which comprise cycloaliphatic moieties, a process for the production thereof and resins and thermoset products which are based on these compounds.
摘要:
Polymerizable monomers comprising at least one 1- or 2-propylene moiety and further comprising both aromatic moieties and additional aliphatic moieties and polymerizable mixtures, resins and thermoset products based on these monomers.
摘要:
A curable resin composition including a homogeneous mixture or blend of: (a) an epoxy vinyl ester resin, and (b) a urethane vinyl ester resin having a weight average molecular weight of greater than 8000 and forming a dispersed second phase in the epoxy vinyl ester resin upon curing of the curable resin composition prepared by reacting: (i) an alkylene bis(phenyl isocyanate) compound; (ii) a plurality of polyalkylene glycols having at least a bimodal distribution of molecular weights, wherein a short-chain molecular weight peak is centered at from about 1,500 to about 10,000 and a long-chain molecular weight peak is centered at from about 200 to about 800 and, optionally, a branched polyalkylene polyol with a hydroxy functionality of greater than 2 and an average molecular weight of from about 450 to about 4600; and (iii) a hydroxyalkyl acrylate or hydroxyalkyl methacrylate.