摘要:
A radiation sensitive polymer material having (a) one or more repeating units of the formula: ##STR1## wherein R is an alkyl group, a halogen atom, a hydrogen atom or a dimethylamino group, and (b) an addition polymerizable repeating unit derived from a compound having a CH.sub.2 .dbd.C
摘要翻译:一种辐射敏感性聚合物材料,其具有(a)一个或多个下式的重复单元:其中R是烷基,卤素原子,氢原子或二甲基氨基,和(b)可加聚的重复单元衍生 从分子中具有CH 2 = C <基团的化合物可以得到具有优异的抗干蚀刻性和对辐射高度敏感的正型抗蚀剂。
摘要:
One or more parts having terminals can be mounted on a circuit board by coating an ultraviolet-curing and thermosetting resin composition comprising an ultraviolet-curing resin, an addition polymerizable monomer, a photosensitizer and a heat polymerization initiator, on the circuit board by screen printing with a prescribed pattern, mounting the parts on the printed resin composition, curing the resin composition by simultaneous irradiation of ultraviolet light and heat rays so as to bond the parts to the circuit board, and soldering the parts onto the circuit board.
摘要:
An electrode material for semi-conductor device such as solar cells comprises Ag powders, at least one metal of zirconium, hafnium, vanadium, niobium, and tantalum, an organic binder, and an organic solvent, and, if necessary, glass, Pd powders and Pt powders.The electrodes are prepared from the electrode material by printing, drying and firing at a low temperature and have a low contact resistance without any junction breakage or increase in leak current.
摘要:
A porcelain composition comprising Pb(Fe.sub.2/3 W.sub.1/3)O.sub.3, PbTiO.sub.3 and Pb(Yb.sub.1/2 Nb.sub.1/2)O.sub.3 preferably within the range as defined by closed area of A-B-C-D-A in the accompanying triangular diagram can give a sintered product by sintering at a temperature as low as 1000.degree. C. or lower. The resulting sintered product has a high relative dielectric constant and a small dielectric loss tangent.
摘要:
Metallic images of uniform quality can be formed on substrates having through-holes by a process using a positive type resist characterized by using as a coating solution for the substrate a solution of a photosensitive material of (a) at least one organic compound having at least one linkage of --M--M--M ).sub.n (M=Si, Ge or Sn; n=0, 1 or more) in the molecule or (b) a mixture of at least one organic compound (a) mentioned above and at least one photosensitizer, dissolved in a solvent such as a halogenated hydrocarbon, an aromatic hydrocarbon, a heterocyclic compound, or a mixture thereof, followed by irradiation with an actinic light through a photomask and electroless plating.
摘要翻译:可以通过使用正型抗蚀剂的方法在具有通孔的基板上形成具有均匀质量的金属图像,其特征在于使用作为基底的涂布溶液的(a)至少一种有机化合物的感光材料的溶液,所述有机化合物至少具有 分子中nMM(M = Si,Ge或Sn; n = 0,1或更多)的一个连接,或(b)上述至少一种有机化合物(a)和至少一种光敏剂的混合物, 溶解在溶剂如卤代烃,芳族烃,杂环化合物或其混合物中,然后通过光掩模和化学镀被光化的光照射。
摘要:
During recyclic use of a chemical copper plating solution, counter anions to copper ions, anions formed by oxidation of a reducing agent, and carbon dioxide by absorption of carbon dioxide from air, which all have an inhibiting effect upon the plating, and also sodium ions having no inhibiting effect are accumulated in the plating solution.These accumulated ions can be removed by electrodialysis. Particularly, regeneration can be satisfactorily regenerated by adjusting the pH of used chemical plating solution to 2-11 before the electrodialysis, and using a selectively monovalent anion permeable membrane as an anion exchange membrane at the electrodialysis.
摘要:
A process for producing solar cells which comprises applying a composition for anti-reflection coating formation on one side of a silicon base plate having a p-n junction therein, printing an Ag paste for contact formation on predetermined areas of the coat, and heat-treating the resulting plate at a temperature of 400.degree. to 900.degree. C. to complete anti-reflection coating and a light-receiving side contact, the process being characterized in that the composition for anti-reflection coating formation contains as essential component, (a) at least one member selected from the metal-organic ligand complex compounds represented by the general formula M(OR.sub.1).sub.n (L).sub.a-n wherein M is a metal selected from Zn, Al, Ga, In, Ti, Zr, Sn, V, Nb, Ta, Mo, and W; R.sub.1 is a C.sub.1 -C.sub.18 alkyl group; L is an organic ligand which forms an non-hydrolyzable bond with the metal ion; a is the valency of the metal M; and n is an integer satisfying 1.ltoreq.n
摘要:
The pH of a chemical copper plating solution is exactly measured for a prolonged time by utilizing a copper oxide prepared by etching metallic copper in an 0.1-1 N inorganic acid then oxidizing the etched metallic copper in an aqueous 0.1-1 N alkali metal hydroxide solution as a main electrode for pH measurement or reducing agent concentration measurement in terms of pH.A combination of the pH measurement with well known procedures for measuring concentrations of cupric ions and a complexing agent exactly measures the pH and the concentrations of a reducing agent, cupric ions and a complexing agent for a continuation of longer time than the conventional procedures.
摘要:
A dielectric paste for a thick film capacitor comprises barium titanate powder, glass frit, magnetite powder, an organic vehicle and a surface-active agent. A dielectric constant higher than 1,100 is obtained by firing at a temperature of 900.degree. C. or lower.
摘要:
A gas detection device and a method for detecting a gas where gas information including concentrations of gas components in a mixed gas, concentration, presence of specific gas components and the like is detected by measuring, e.g., the output voltages of a plurality of gas sensors having different gas selectivities. The gas selectivities, as a characteristic constant of the specific gas sensor, was previously determined. The measured output voltages and gas selectivities are then used for solving plural simultaneous equations for gas concentrations.