摘要:
A base board for a printed circuit board panel which permits easy inspection of a printed circuit by means of a fluorescence-applied circuit pattern inspection machine used for the inspection of printed circuit patterns and which is not altered in the properties as a printed circuit board, the base board having an insulating layer containing 5.0 to 0.00001% by weight of a compound of any one of the formulae (1), (2) and (3), ##STR1##
摘要:
A base board for a printed circuit board having a printed circuit formed from a copper foil on an insulating layer, the insulating layer containing a compound of the formula (1) or a compound of the formula (2). ##STR1##
摘要:
A process for the production of a copper-clad laminate which is improved in dimensional accuracy and freedom from bow and twist and shows nearly the same values of dimensional accuracy, thermal expansion coefficient and elastic modulus in the length and width directions, the process using:a prepreg (I) comprising a glass cloth (I-1) having a thickness of 190.+-.20 .mu.m, a weight of 210.+-.20 g/m.sup.2, warp and weft counts of 35 to 38 yarns/25 mm and a warp and weft difference of 2 yarns or less in count, anda copper foil (II) having a ductility, measured in atmosphere at 180.degree. C. in length and width directions, of at least 10% when it is a 1/2 oz/Ft.sup.2 foil, at least 15% when it is a 1 oz/Ft.sup.2 foil and at least 20% when it is a 2 oz/Ft.sup.2 foil, andthe set of the prepreg or prepregs and copper foil or copper foils is laminate-molded by curing it under predetermined heat in a laminate-molding step using a press machine, removing the application of pressure and then cooling the resultant laminate in the press machine.
摘要:
A resin composition for a laminate, containing at least 10% by weight of a vinyl compound represented by the formula (1), and a prepreg and a metal-clad laminate using the resin composition.
摘要:
A resin composition for a laminate, containing at least 10% by weight of a vinyl compound represented by the formula (1), and a prepreg and a metal-clad laminate using the resin composition.
摘要:
There is disclosed an Al alloy composite tube for refrigerant passages, made by extruding, or extruding and drawing a two-layer composite pipe obtained by shrink-fit of a tubular Al alloy inner material to the inside of a tubular Al alloy core, or a three-layer composite pipe obtained by shrink-fit of the two-layer composite pipe to the inside of a tubular Al alloy outer material; and a method for producing the same. This Al alloy composite tube for refrigerant passages causes less blisters at the interface between an inner pipe and an outer pipe, and can prevent debonding of the inner pipe.
摘要:
A polyphenylene ether resin composition having improved solvent resistance comprising (A) a modified polyphenylene ether obtained by modifying a polyphenylene ether with a modifier such as maleic anhydride and (B) a modified polyolefin obtained by modifying a polyolefin with both a modifier such as maleic anhydride and a vinyl or vinylidene compound such as styrene, and optionally (C) a binder such as phenylenediamine.
摘要:
A polyphenylene ether resin composition having improved solvent resistance comprising (A) a modified polyphenylene ether obtained by modifying a polyphenylene ether with a modifier such as maleic anhydride and (B) a modified polyolefin obtained by modifying a polyolefin with both a modifier such as maleic anhydride and a vinyl or vinylidene compound such as styrene, and optionally (C) a binder such as phenylenediamine.
摘要:
For constituting a pre-metal interlayer insulating film, such a method is considered as forming a CVD silicon oxide-based insulating film having good filling properties by ozone TEOS, reflowing the film to planarize it, stacking a silicon oxide film having good CMP scratch resistance by plasma TEOS, and further planarizing by CMP. However, in forming a contact hole, crack in the pre-metal interlayer insulating film is exposed in the contact hole, into which barrier metal intrudes to cause short-circuit defects. In the present invention, in the pre-metal process, after forming the ozone TEOS film over an etch stop film, the ozone TEOS film is once etched back so as to expose the etch stop film over a gate structure, a plasma TEOS film is formed over the remaining ozone TEOS film, and the plasma TEOS film is planarized by CMP.
摘要:
A tooth bleaching material that is safe and has good operability and high bleaching effect and a tooth bleaching method using the tooth bleaching material are provided by bleaching and removing colored sediments (colored or discolored deposits) on a tooth with a tooth bleaching material containing hydrogen peroxide and/or a compound generating hydrogen peroxide in an aqueous solution, and a dicarboxylic anhydride, and also containing a basic compound and a thickening agent, and a tooth bleaching method containing attaching the tooth bleaching material to a surface of a discolored tooth after dilution or without dilution irradiating with light.