摘要:
Printed wiring board for a chip size scale package, which overcomes the poor adhesion of solder balls to a base material which poor adhesion is caused by a recent decrease in the size of the solder balls, and in the chip size scale package. The distortion of the printed wiring board is decreased and the distortion of a semiconductor plastic package formed by mounting a semiconductor chip on the printed wiring board by wire bonding or flip chip bonding is decreased. The board has at least two blind via holes in one solder-balls-fixing pad.
摘要:
A copper-clad laminate of a highly-elastic glass fabric base material/thermosetting resin formed of prepreg obtained by impregnating a glass fabric base material made of a glass woven fabric having a thickness of 25 to 150 μm, a weight of 15 to 165 g/m2 and a gas permeability of 1 to 20 cm3/cm2/sec. with a thermosetting resin composition and drying it.
摘要翻译:一种高弹性玻璃织物基材/热固性树脂的覆铜层压板,其由预浸料形成,该浸渍玻璃织物通过浸渍由玻璃织物制成的玻璃织物基材,所述玻璃织物基材由厚度为25至150μm,重量为15至165g / m 2,透气度为1〜20cm 3 / cm 2 / sec。 用热固性树脂组合物干燥。
摘要:
A method for producing a rigid resin mold for preparing plastic moldings which comprises:(1) preparing a composition (I) consisting essentially of(A) a cyanate ester resin composition, and(B-1) a metallic substance which does not substantially accelerate gelation of the cyanate ester resin composition (A),(2) preparing a composition (II) consisting essentially of(C) epoxy resin, and(B-2) a metallic substance which accelerates gelation of the cyanate ester resin composition (A) and does not substantially accelerate gelation of the epoxy resin (C) at temperatures below or equal to 100.degree. C.,(3) mixing composition (I) of step (1) and composition (II) of step (2) to form composition (III),(4) casting composition (III) of step (3) into a mold(5) and gelling the cast resin.
摘要:
An adhesive composition comprising at least(A) at least one cyanate ester compound selected from the group consisting of:(i) polyfunctional aromatic cyanate ester monomers having the formulaR--O--C.tbd.N).sub.n wherein n is integer of 2-10 and R is an aromatic organic group, the cyanate groups being bonded to an aromatic ring or said aromatic organic group;(ii) homoprepolymers of (i) and(iii) coprepolymer of (i) and an amine, and(B) at least one thermoplastic saturated polyester resin which is non-crystalline, substantially non-crystalline or of low crystallinity is disclosed. The adhesive composition has excellent heat resistance, moisture resistance and chemical resistance.
摘要:
A copper-clad laminate of a highly-elastic glass fabric base material/thermosetting resin formed of prepreg obtained by impregnating a glass fabric base material made of a glass woven fabric having a thickness of 25 to 150 μm, a weight of 15 to 165 g/m2 and a gas permeability of 1 to 20 cm3/cm2/sec. with a thermosetting resin composition and drying it.
摘要翻译:一种高弹性玻璃织物基材/热固性树脂的覆铜层压板,其由预浸料形成,所述预浸料通过浸渍由厚度为25至150μm的玻璃织物制成的玻璃织物基材,重量为15至165g / m 2,气体渗透率为1至20cm 3 / cm 2 / sec。 用热固性树脂组合物干燥。
摘要:
A method of drilling a through-hole in a printed circuit board panel, which comprises placing a water-soluble lubricant sheet on one surface or each of two surfaces of a printed circuit board panel and drilling a through-hole through the printed circuit board panel, the water-soluble lubricant sheet being composed of a mixture of 20 to 90% by weight of a polyethylene glycol having a weight average molecular weight of not less than 10,000 with 10 to 80% by weight of a water-soluble lubricant and having a thickness of 0.05 to 3 mm.
摘要:
A thermosetting resin composition polyfunctional cyanate ester resin composition comprising:(I) a cyanate ester compound selected from the group consisting of a polyfunctional cyanate ester having at least two cyanate esters in its molecule, a prepolymer of such a cyanate ester and mixtures thereof; and(II) at least one non-branched aromatic compound in an amount of 5-40% by weight of the total resin composition, said aromatic compound having a number-average molecular weight of 178-800, an average number of aromatic nuclei of 2-6, and a boiling point of more than 300.degree. C., and in which the portion having aromatic nuclei of 2-6 constitutes more than 50% is disclosed.
摘要:
An adhesive composition comprising at least(A) at least one cyanate ester compound selected from the group consisting of:(i) polyfunctional aromatic cyanate ester monomers having the formulaR--O--C.tbd.N).sub.n wherein n is integer of 2-10 and R is an aromatic organic group, the cyanate groups being bonded to an aromatic ring or said aromatic organic group;(ii) homoprepolymers of (i) and(iii) coprepolymer of (i) and an amine, and(B) at least one thermoplastic saturated polyester resin which is non-crystalline, substantially non-crystalline or of low crystallinity is disclosed. The adhesive composition has excellent heat resistance, moisture resistance and chemical resistance.
摘要:
A process for producing a curable resin which comprises reacting (a) at least one cyanate ester compound selected from the group consisting of polyfunctional cyanate esters having two or more cyanato groups per one molecule, prepolymers of the cyanate esters or mixtures thereof with (b) at least one compound having hydroxy group(s) and radical-polymerizable unsaturated double bond(s) in its molecule, the cyanate ester compound (a) and the compound (b) being used so that the ratio of the cyanato group to the hydroxy is in the range of from about 1:0.1 to about 1:2, in the presence of (c) a radical polymerization inhibitor at a temperature of about 80.degree.-about 140.degree. C.The curable resin produced according to the present invention is capable of giving cured products having excellent heat resistance and electrical properties.
摘要:
A process for producing a curable resin comprises reacting (a) at least one cyanate ester compound selected from the group consisting of polyfunctional cyanate esters having 2 or more cyanato groups per one molecule, prepolymers of the cyanate esters or mixtures thereof with (b) at least one compound having 1,2-epoxy group(s) and radical-polymerizable unsaturated double bond(s) in its molecule, the cyanate ester compound (a) and the compound (b) being used so that the ratio of the cyanato group to the 1,2-epoxy group is in the range of about 1:0.25 to about 1:2, in the presence of (c) a radical polymerization inhibitor at a temperature of about 90.degree.--about 140.degree. C.The curable resin produced according to the present invention is capable of giving cured products having excellent heat resistance and electrical properties.