Ciba Specialty Chemicals Corporation

Vantico Limited

Ramaswami Sreenivasan

Carl W Mayer

Barbara Wagner

Hans-Thomas Schacht

Gilbert Moegle

Kikkeri Divakar

Mudaliar Dayal Chandrasekhar

Charles Edward Monnier

Heat curable compositions comprising: (A) at least one compound which is capable of undergoing cationic polymerization; (B) at least one quaternary ammonium salt of an aromatic-N-heterocyclic cation and of a non-nucleophilic anion; (C) at least one 1,1,2,2-substituted-1,2-ethane-diol and/or a derivative thereof, and (D) optionally further additives; and wherein said component (C) is a compound of formula (I), wherein each of R , R , and R independently of the other is unsubstituted phenyl or has one of the meanings of R ; R is substituted phenyl optionally substituted &agr;-naphthyl or &bgr;-naphthyl, or an optionally substituted aromatic heterocyclic ring system or each of R and R and/or R and R independently of the other form a residue of formula (II), wherein each of R and R independently of the other is hydrogen or (C -C )alkyl; R is &mdash;(CH ) &mdash; or &mdash;S&mdash; or &mdash;O&mdash;; and n is 0, 1, 2, or 3.

Heat curable epoxy compositions

Method for producing thermally cleavable, soluble pigment derivatives

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Mumbai, India

Ramaswami Sreenivasan