Process for the preparation of laminates
CA 1308641 C · Owner: Ciba-Geigy Ag · Inventors: Scharf, Wolfgang; Meier, Kurt; Haug, Theobald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of laminates Abstract, A process is described for the preparation of a laminate comprising thesteps i) preparation of a layer by bringing into contact a fibrous substrate with a curable mixture containing an epoxy resin having on average at least two 1,2-epoxide groups per molecule or a mixture of these epoxy resins and a compound of the formula I (I), or a mixture of these compounds, in which a and b are independent of one another 1 or 2, R1 is a .pi.-arene R2 is a .pi.-arene or an indenyl-, or cyclopentadienyl anion X- is an anion LQm- or an anion of a, partly fluorinated or perflourinated aliphatic or aromatic sulfonic acid, L is P, As or Sb, Q is fluorine or …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.