Ciba-geigy Corporation

Michael R Thoseby

Bryan Dobinson

William M Rolfe

Christopher M Andrews

Bernard Peter Stark

A process for the production of glycidyl ether of an aliphatic, cycloaliphatic or araliphatic primary or secondary alcohol, comprising:

Glycidyl ether from alcohol and epichlorohydrin

The new compound N,N,N'N'-tetraglycidyl-3,3'-diethyl-4,4'-diaminodiphenylmethane and curable resin compositions containing it.

N-glycidyl compound

A process for the production of a material having an increased molecular weight relative to the diepoxide starting material the material being either a hydroxy-terminated or an epoxy-terminated material comprising

Production of compounds

A compound having the formula (I): ##STR1## in which n is an integer ranging from 2 to 6; X is the residue of an optionally substituted primary or secondary aliphatic or cycloaliphatic polyol of formula II:

Polyglycidyl compounds

A process for the production of a glycidyl ether of an alcohol, comprising reacting an alcohol with epichlorohydrin, in substantially the stoichiometric proportions required to produce the 1:1 adduct, in the presence, as catalyst, of a salt of perchloric acid or trifluoromethane sulphonic acid with a metal of Group IIIA of the Periodic Table of Elements (according to the IUPAC 1970 convention); and then dehydrochlorinating the product so obtained.

Production of glycidyl compounds

An epoxide resin having the formula I: ##STR1## in which R.sup.1 to R.sup.4 are the same or different and each is hydrogen or C.sub.1 -C.sub.12 alkyl; R.sup.5 to R.sup.12 are the same or different and each is C.sub.1 -C.sub.12 alkyl or alkenyl or the glycidyl residue such that at least two R.sup.5 to R.sup.12 groups are glycidyl residues; and R.sup.13 to R.sup.20 are the same or different and are hydrogen, halogen C.sub.1 -C.sub.12 alkyl or alkenyl.

Calixerene epoxide resins and hardeners

Aromatic N-glycidylamines are prepared by treatment of an amine having at least one, and preferably two or more aromatic amino hydrogen atoms, with epichlorohydrin in the presence, as catalyst, of a di- or higher-valent metal salt of nitric or perchloric acid, or of a carboxylic or sulphonic acid substituted by fluorine, chlorine or bromine on the carbon atom alpha to the carboxylic or sulphonic acid group, and dehydrochlorinating the product. The presence of the metal salt gives a product having a higher glycidyl content and a lower viscosity than does the same reaction in the absence of such a salt. Suitable aromatic amines include aniline, phenylene diamines, phenylene diamines substituted on the aromatic ring and bis(4-aminophenyl)methane. The metal salt may be of, for example, magnesium, calcium, zinc, manganese, nickel, iron, lanthanum, vanadium, ytterbium or uranium.

Preparation of N-glycidyl compounds

Thermosettable resin compositions which, when cured, are electrically conducting, comprise an adduct of an aliphatic diglycidyl ether with a haloanilic acid and, as curing agent, an aromatic amine containing at least three hydrogen atoms directly attached to nitrogen atoms which are themselves directly attached to aromatic nuclei.

Growing community of inventors

Cambridge, United Kingdom

Michael R Thoseby