MANUFACTURE OF FLAME-RETARDANT PAPER PHENOL COPPER-CLAD LAMINATE OF SUPERIOR PUNCHING PROPERSTY

PROBLEM TO BE SOLVED: To reduce the amount of use of tung oil while keeping a punching property, also reduce the cost thereof and use inexpensive tetrabromobisphenol-A just as it is. SOLUTION: A prepreg formed of a base paper impregnated with resin, heated and dried and a copper foil are laminated,...

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Bibliographische Detailangaben
1. Verfasser:	NANAUMI KEN
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS PUNCHING METAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the amount of use of tung oil while keeping a punching property, also reduce the cost thereof and use inexpensive tetrabromobisphenol-A just as it is. SOLUTION: A prepreg formed of a base paper impregnated with resin, heated and dried and a copper foil are laminated, heated and pressurized to manufacture a paper phenol copper-clad laminate. In that case, flexible phenol resin prepared by adding phenols into a reaction product composed of tung oil and phenols into a mixture of at least one of epoxy vegetable oil and epoxy butadiene with another reaction product composed of brominated bisphenols and bisphenols or bivalent bisphenols or by not adding bisphenols therein but reacting with formaldehyde under the presence of a basic catalyst is used.