摘要:
The present invention relates to phosphorus-modified epoxy resins having an epoxy number from 0 to 1 mol/100 g, comprising structural units which are derived from (A) polyepoxy compounds having at least two epoxy groups per molecule, and (B) phosphinic and/or phosphonic anhydrides. The invention further provides a process for preparing these phosphorus-modified epoxy resins and provides for the use of the resins in producing moldings, coatings or laminates.
摘要:
The present invention is directed to an optical glass fiber with a primary coating of organo-polysiloxanes containing acrylic acid ester groups which coating is inter alia hydrolysis stable and rapidly curable.
摘要:
The invention relates to a color organic display (OLED display) with pixels (1), which comprise in each case a subpixel set (2, 3, 4) with the colors, red, green, and blue, having: a substrate (5), which is at least partially transparent to visible light, a structured color filter (6), which generates the colors of the subpixels (2, 3, 4) and is subsequently arranged on the substrate (5), a first electrode (7, 9) subsequently arranged on the color filter (6), which is at least partially transparent to visible light, at least one active layer (8) subsequently arranged on the first electrode (7, 9), containing an emissive material, which is suitable for the generation of electromagnetic radiation, whose spectrum is matched to the color filter (6) such that the pixels (1) during control with the same electrical signal emit light whose color location lies within the white region of the CIE diagram, and a second electrode (7, 9) subsequently arranged on the active layer (8).
摘要:
A K type of copolyarylborane: wherein hydrogen atoms are bonded to the ends; Arn represents at least one of Ar1, Ar2, and Ar3; each of Ar1 and Ar2 represents an arylene radical; Ar3 represents an heteroaromatic arylene radical; Ar1 has a π electron density of no less than that of benzene; Ar2 is capable of hole transport; Ar3 has a π electron density of no greater than that of benzene and less than that of Ar1; x, y, and z respectively represent the molar parts of Ar1, Ar2, and Ar3; each of x, y, and z is in the range of 0-1, and x+y+z=1; and R represents an aryl radical. This K type of copolyarylborane may be of use for organic light-emitting diodes (OLEDs), organic solar cells, organic photodetectors, and organic field-effect transistors.
摘要翻译:K型共聚芳基硼烷:其中氢原子键合到末端; Ar sup>表示Ar 1,Ar 2和Ar 3中的至少一个; Ar 1和Ar 2各自表示亚芳基; Ar 3表示杂芳族亚芳基; Ar 1具有不小于苯的pi电子密度; Ar <2>能够进行空穴传输; Ar 3具有不大于苯的π电子密度并且小于Ar 1的电子密度; x,y和z分别表示Ar 1,Ar 2和Ar 3的摩尔份数。 x,y和z中的每一个在0-1和x + y + z = 1的范围内; R表示芳基。 该K型共聚芳基硼烷可用于有机发光二极管(OLED),有机太阳能电池,有机光电检测器和有机场效应晶体管。
摘要:
The invention relates to chromophores exhibiting semiconductive properties, the production and use thereof as luminophores in organic light-emitting diodes (OLEDs) and organic solar cells. The invention more specifically relates to highly condensed boron complex compounds wherein the boron atoms have improved processability, solubility and the fluorescence quantum efficiency is increased by building up by spirocenters.
摘要:
In a rotating electrical machine having a permanent-magnet rotor, the tubular, highly thermally conductive supporting body of the stator forms a thermal bridge to a cooling means. In order to allow the end windings of the stator windings to be cooled effectively as well, the end windings also each have an associated thermal bridge, which completely fills the space between the end windings and the supporting body of the stator. This thermal bridge is of solid construction having a solid ring, which is connected to the supporting body of the stator with a force fit, and a cast-resin body which is cast into this solid ring. The cast-resin body has a thermal conductivity of more than 1.6 W/mK and, for this purpose, contains a powdery, highly thermally conductive filler making up a proportion of 50 to 90% by weight, preferably an aluminum nitride coated with silicon dioxide.
摘要:
The present invention relates to phosphorus-modified epoxy resins of the formulae (I) and/or (II) ##STR1## The invention furthermore relates to a process for the preparation of these phosphorus-modified epoxy resins and to their use for the production of shaped articles, coatings or laminates.
摘要:
Epoxy resin mixtures for producing prepregs and composites that are available at low cost and can be processed well yield flame-retardant molding materials even without the addition of flame retardants, and these molding materials have a high glass transition temperature and also have an improved interlaminar adhesion and adhesion to copper when they contain the following components:a phosphorus-modified epoxy resin with an epoxy value of 0.02 to 1 mol/100 g, composed of structural units derived from(A) polyepoxy compounds with at least two epoxy groups per molecule and(B) at least one compound from the group consisting of phosphinic acids, phosphonic acids, pyrophosphonic acids and phosphonic acid half-esters, andan aromatic polyamine as the hardener.
摘要:
The invention provides epoxide resin molding compositions for protectively covering semiconductor components, which are accessible in a cost-effective manner and have good processibility. The epoxide resin molding compositions provide virtually inflammable molded materials with a high glass transition temperature and a low thermal expansion coefficient without the addition of flameproofing agents, when they contain the following constituents:(A) an aromatic and/or heterocyclic polyepoxide resin which is free of phosphorous, optionally in combination with an aliphatic epoxide resin;(B) an epoxide-group-containing phosphorous compound;(c) an aromatic polyamine as a curing agent; and(D) filler material.
摘要:
The invention relates to a method for impregnating and embedding electrical windings, especially coils of transformers, by means of an impregnating or casting resin based upon polyepoxide-polyisocyanate mixtures in the presence of a reaction accelerator latent at the processing conditions, which employs conditions that prevent the formation of gas and shrinkage voids in the cast in winding. To this end, the resin including, if applicable, additives, is dried at reduced pressure and while stirring at temperatures of up to 110.degree. C. and the winding is cast-in with the dried resin at reduced pressure and at temperature of up to 110.degree. C.; then the reduced pressure is removed and the winding is exposed to overpressure. Subsequently, generating by an elevated temperature in the electrical winding by Joule heat in the conductor, the cross-linking reaction of the resin is started and is controlled as a function of the reaction heat, until the winding is removed from the mold and post-hardened.