The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 1991
Filed:
Aug. 23, 1990
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A laminate prepared by combining at least two layers wherein at least one of which is made of a fibrous material, an epoxy resin having on average at least two 1,2-epoxide groups per molecule or a mixture of these epoxy resins and a ferrocene derivative of the formula [R.sup.1 (Fe.sup.II R.sup.2).sub.a ].sup.ab+ ab.[X].sup.-, wherein a and b independently of one another are 1 or 2, R.sup.1 is a .pi.-arene, R.sup.2 is a .pi.-arene or an indenyl- or cyclopentadienyl anion, X.sup..crclbar. is an anion [LQ.sub.m ].sup..crclbar. or an anion of a partly fluorinated or perfluorinated aliphatic or aromatic sulfonic acid, L is P, As or Sb, Q is fluorine or some of the Q substituents may also be hydroxyl groups, and m corresponds to a value which exceeds the valence of L by unity, subjecting the layers to compression molding at such a temperature and pressure that a liquid resin matrix is present at the beginning of this step and an initial fall in the viscosity is produced so that entrained gases can escape from the layers and crosslinking the laminated layers to obtain a rapid rise in viscosity such that the resin which flows out does not bind the compression mold.