Abstract:
A resin composition for forming conductor patterns comprising a photo curable resin, a photopolymerization initiator, a thermosetting resin, photosensitive semiconductor particles, and if necessary a polyfunctional unsaturated compound is suitable for forming very fine conductor patterns in a build-up method.
Abstract:
Resin compositions for laminated sheets and laminated sheets produced therefrom are disclosed, the compositions comprising at least one allyl ester resin composed of a polybasic acid and a polyhydric alcohol, wherein an allyl ester group of said resin is bonded to at least one of terminals thereof.
Abstract:
A non-tacky, solid, adhesive composition which can be activated without C-staging the polymeric resin, upon application of sufficient heat or ultrasonic energy for a time period less than one second, comprising a) at least one film forming polymeric resin of number average molecular weight (M n ) of at least about 10 000 and having a hydroxyl, epoxide or unsaturated functionality greater than about 7, the polymeric resin being selected from the group of polyols consisting of polyesters, polyurethanes, phenoxies, epoxies and mixtures thereof; b) a plasticizer present in an amount which permits the activation without C-staging of the polymeric resin; c) a curing agent which is capable of crosslinking and curing the polymeric resin to a C-stage, the curing agent being present in an amount sufficient to C-stage the polymeric resin.
Abstract:
A method of and device for continuously fabricating a printed circuit laminate or electrically insulating laminate. The method comprises the steps of continuously conveying sheet-like substrates (6) impregnated with a thermosetting resin liquid which produces almost no by-products such as gas, liquid, etc. during the hardening reaction process, laminating the substrates (6), applying coatings (11) to both sides of the laminated substrates at the same time as the laminating step or thereafter, and then allowing the resin to set without the application of pressure.
Abstract:
A flame retarded copper clad laminate is provided comprising a plurality of paper substrate layers each impregnated with a halogen-containing unsaturated polyester resin containing about 1% to about 30% by weight of a basic filler, and a copper cladding adhesively bonded onto at least one side of the laminate.
Abstract:
This invention relates to an insulating laminate which consists of several sheets of reinforcements (1) impregnated with a curable resin and layers (2) of cured resin located between each reinforcement. Metal clad laminates are also disclosed which consist of reinforcements (1), layers (2) of cured resin and a metal foil (5) placed on the laminates. Each reinforcement (1) is substantially isolated by the resin layers (2).
Abstract:
La présente invention concerne un procédé d'impression comprenant une étape d'impression d'un motif sur le substrat, de préférence par jet d'encre, suivie d'une étape de « dorure » par contact entre le motif préimprimé à dorer et un dispositif de dépôt de « dorure », tel qu'une feuille métallique de préférence conductrice, par exemple un film multicouches comprenant une feuille métallique de préférence conductrice.