摘要:
A pretreatment agent for electroless plating is provided, which includes: a silane coupling agent; a surfactant; and ethylene-based glycol butyl ethers of formula: C 4 H 9 -(OC 2 H 4 ) n -OH where n is an integer of 1 to 4, and/or propylene-based glycol butyl ethers of formula: C 4 H 9 -(OC 3 H 6 ) n -OH where n is an integer of 1 to 4. Also provided are a method for pretreating a substrate to be used for a printed wiring board, and a process for producing a printed wiring board, both of which include using a pretreatment agent for electroless plating as described above.
摘要:
The present invention relates to a method of selectively treating the surface of copper or copper alloys without affecting other metals, particularly tin. The methods are suited for treating surfaces of copper or copper alloys in order to facilitate subsequent deposition of metal layers and enhance solderability of the surfaces of copper, copper alloys and said subsequently deposited metal layers. The methods are applied to printed circuit boards (PCBs) and lead frames or integrated circuit substrates (IC substrates).
摘要:
A method for forming a conductor pattern comprising the steps of (a) forming a photo-crosslinkable resin layer on a substrate provided with a conductive layer on its surface, (b) treating the photo-crosslinkable resin layer with an alkali aqueous solution to render it thinner, (c) carrying out exposure for a circuit pattern, (d) developing and (e) etching, the steps included in this order, said alkali aqueous solution being an aqueous solution containing 5 to 20 mass% of an inorganic alkaline compound, or method for forming a conductor pattern comprising the steps of (a') forming a photo-crosslinkable resin layer on a substrate provide with a conductive layer on its surface and inside a hole thereof, (i) curing the photo-crosslinkable resin layer on the hole alone or on the hole and a surrounding area thereof, (b') treating the photo-crosslinkable resin layer in an uncured portion with an alkali aqueous solution to render it thinner, (c) carrying out exposure for a circuit pattern, (d) developing and (e) etching, these steps included in this order, said alkali aqueous solution being an aqueous solution containing 5 to 20 mass% of an inorganic alkaline compound.
摘要:
The invention is directed to a method and composition for providing roughened copper surfaces suitable for subsequent multilayer lamination. The adhesion promoting composition consisting essentially of an oxidizer, a pH adjuster, a topography modifier (Fig.1), and a uniformity enhancer (Fig.2). A coating promoter may be used in place of the uniformity enhancer or in addition to the uniformity enhancer. The process may further comprise the step of contacting the uniform roughened copper surface with a post-dip, wherein the post-dip comprises an azole or silane compound or a combination of said azole and said silane. The post-dip may further comprise, alone or in combination, a titanate, zirconate, and an aluminate.
摘要:
Disclosed herein is a composition for etching a polycarbonate film comprising an alkali metal salt and an amine solubilizer. Also disclosed is a method for etching polycarbonate films with the etchant and an article containing the etched film. The article is useful for, e.g., flexible circuits and carrier tapes.
摘要:
L'invention concerne un procédé de valorisation de déchets de matériaux à base de résine époxyde, comprenant une étape de glycolyse du matériau à une température supérieure à 225°C, en présence d'au moins un polyalcool et de 10 à 25% de KOH en poids par rapport au poids de matériau.
摘要:
The invention relates to the manufacture of printed circuit boards having improved interlayer adhesion. More particularly, the present invention pertains to adhesiveless printed circuit boards having excellent thermal performance and useful for producing high-density circuits. A metal foil is laminated to an etched surface of a polyimide substrate having a polyimide film thereon. Etching the substrate surface allows for strong adhesion of a pure polyimide film to the substrate.