Ciba-geigy Corporation

Ciba-geigy Ag

Alfred Renner

Theobald Haug

Abdul-Cader Zahir

Sameer H Eldin

Bruno Schreiber

Jacques-Alain Cotting

Rolf Hugi

Christian Vonlanthen

Edward Irving

Andre Schmitter

Christopher P Banks

Imre Forgo

Werner Margotte

Franz R Widmer

Andreas Kramer

Rolf Mulhaupt

Horst Zinke

Roland Moser

Rolf Schmid

Sheik A Zahir

Terence J Smith

Werner Stauffer

Heinz Rembold

Jurg Kiefer

Horst Lauterbach

Holger Andreas

Michael Fischer

Albrecht Muller

Klaus D Leifels

Peter Grutter

Free-flowing powdery compositions comprising: (A) liquid or semi-solid epoxy resins; and (B) solid colloidal condensation polymers of urea or melamine and formaldehyde having a pore volume greater than 1 cm .sup.3 /g and a specific surface area greater than 5 m.sup.2 /g. The novel compositions can be typically used as powder coating compositions, adhesives, casting resins and molding compounds.

Epoxy resin compositions

Free-flowing powdery compositions comprising

Compositions comprising aminoplast resins and solid colloidal

Biphosphites of formula I ##STR1## wherein m is 0, 1 or 2,

Biphosphites

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

A polymerizable composition comprises a mixture of

Polymerizable compositions

Polyglycidyl ethers which are obtainable by reacting acetophenone with 0.7 to 1.4 mol of formaldehyde per mol of acetophenone, in the presence of an alkaline catalyst and in the temperature range from 50.degree. to 100.degree. C., to a carbonylated acetophenone/formaldehyde resin, hydrogenating said carbonylated resin to a modified hydroxylated acetophenone/formaldehyde resin, subsequently converting said resin with epichlorohydrin, in the presence of a phase transfer catalyst, into the corresponding polychlorohydrin ether, and dehydrochlorinating said ether with a base, are suitable for use as epoxy resins, for example for the preparation of powder coating compositions having good resistance to chemicals and good adhesion.

Epoxidized modified acetophenone/formaldehyde resins

Thermosetting reactive systems, comprising

Thermosetting reactive systems

The invention relates to polycycloacetals of formula I ##STR1## wherein n is an integer from 1 to 500, x and y are each independently of the other 0 or 1, R.sup.1 is a carbon atom or a tetravalent hydrocarbon radical having a molecular weight not greater than 1000 and which can additionally contain ether oxygen atoms or oxygen atoms in hydroxyl, carbonyl or epoxy groups, and R.sup.2 is a tetravalent hydrocarbon radical derived from a dialdehyde or a diketone. The polycycloacetals can be used together with conventional hardeners and/or curing catalysts for epoxy resins for the fabrication of cross-linked (cured) products having good properties, especially having excellent fastness to solvents, light and weathering.

Epoxidized polycycloacetals

Polymers formed from anhydrides of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen or methyl. The novel polymers are suitable for use as curing agents for polyepoxide compounds.

Polymers formed from allyl-substituted or methallyl-substituted,

Compounds of formula ##STR1## wherein E and R' are each independently of the other a hydrogen atom or a methyl group,

Trisimides of allyl-substituted or methallyl-substituted

Heat-curable mixture containing substituted bicyclo (2.2.1)

Imides of the formula I ##STR1## in which E is allyl or methallyl, R is hydrogen, alkyl, alkenyl, cycloalkyl, aryl, benzyl, alkylene or arylene, and n is 1 or 2, are intermediates for the preparation of crosslinked polymers having excellent physical properties. The polymers can be used, in particular, for the preparation of glass fibre-reinforced and carbon fibre-reinforced plastics and heat-resistant composite materials, and as electrical insulation materials and whirl-sintered powder paints.

Substituted, unsaturated, bicyclic imides and polymers thereof

Imides of the formula I ##STR1## wherein R.sup.1, R.sub.2, R.sup.3 and n have the meanings defined in claim 1, are intermediates for producing polymers having excellent physical properties, and for producing sulfonic acid esters.

Substituted, unsaturated, bicyclic imides containing hydroxyl groups,

The invention relates to compounds with structures of the formulae I to IV ##STR1## in which formulae Tr is a radical of formula V or VI ##STR2## A is --O-- or --NR.sup.1 --, R.sup.1 is hydrogen or a monovalent organic radical,

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Muntelier, Switzerland

Alfred Renner