Ciba-geigy Corporation

Christopher P Banks

Edward Irving

Alfred Renner

Christopher G Demmer

Terence J Smith

Christian Vonlanthen

Jonathan W Goodin

A method of making a metallic pattern on a substrate having a surface comprising bare metal in predetermined areas and metal coated with a resist in remaining areas which comprises

Method of making patterns

Images are formed by the following process:

Method for forming images

The present invention provides a method for making a metallic pattern on a substrate having a surface comprising bare metal in predetermined areas and metal coated by a resist in remaining areas which comprises (i) protecting the bare metal by coating with a film-forming resin, (ii) removing any film-forming resin from the resist, (iii) removing the resist from said remaining areas using a solvent which will not remove the film-forming resin, thereby exposing metal in said remaining areas, (iv) etching the metal exposed in (iii) using an etchant which does not remove the film-forming resin and (v) removing the film-forming resin with a suitable solvent.

Method for making metallic patterns

A method of making a pattern on an electrically conductive material such as a printed circuit comprises

Method of making electrically conductive patterns

Imides of the formula I ##STR1## In which R.sub.1, R.sub.2 and R.sub.4 independently of one another are hydrogen or methyl, R.sub.3 is a direct bond or a C.sub.2 -C.sub.20 aliphatic radical which can be interrupted by O atoms or a mononuclear or polynuclear C.sub.5 -C.sub.20 cycloaliphatic or C.sub.6 -C.sub.20 aromatic radical or is a group of the formula II ##STR2## in which T is methylene, isopropylidene, CO, O, S or SO.sub.2 and R.sub.5 is hydrogen or phenyl, can be crosslinked either photochemically or by heat and produce polymers having excellent properties, in particular a very high resistance to heat. They are particularly suitable for the production of heat-resistant photolithographs or as matrix resins for the production of composite materials.

Substituted, unsaturated, bireactive bicycle imides and the use thereof

Metallic patterns, such as printed circuits, are prepared by immersing metal substrates, bearing electrodeposited films and resist films in patterned areas, into an aqueous solution or dispersion of a hardening agent so that the hardening agent diffuses only into the electrodeposited film. This is followed by curing the hardening agent by heat or irradiation to render it resistant to the solvent used to remove the resist film and to the etchant solution for the metal exposed when the resist film is removed.

Method of making a metallic pattern on a substrate

A method of making a pattern of an electrically conductive material which comprises

Method of making a pattern

A process for the formation of an image comprises

Process for forming images

A polymerizable composition comprises a mixture of

Polymerizable compositions

A method of making a metallic pattern on a substrate having a surface comprising bare metal in predetermined areas and metal coated by a resist in remaining areas comprises

Process for the formation of an image

The invention provides a process for the production of an image which comprises

Method of forming images

Metallic surfaces, especially of ferrous metals, are coated by passing an electric current at a voltage of at least 15 V between the metallic surface as anode and a cathode in contact with a composition comprising

Method of electrocoating metallic surfaces

A process for the production of an image on a substrate comprises

Process for the production of images

Cationically polymerizable materials, such as epoxide resins, phenoplasts, and aminoplasts, are polymerized by passing an electric current through a composition comprising

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Saffron Walden, United Kingdom

Christopher P Banks