O-imino-iso-urea compounds and polymerizable compositions thereof

Abstract

The invention relates to the use of O-imino-iso-urea compounds as source of radicals to polymerizable compositions comprising these O-imino-iso-urea and to new O-imino-iso-urea compounds. The O-lmino-isoureas compounds are compounds of the Formula (I), wherein n is 1, 2, 3 or 4, Rand Rare independently H, Calkyl, C-Ccycloalkyl, C-Caryl, C-Cheteroaryl, C-Caralkyl, C-Cheteroaralkyl, Cyano, or Rand Rform together with the carbon to which they are attached a mono or polycyclic C-Ccarbocyclic or C-Cheterocyclic ring; Rand Rare independently C-Calkyl, C-Ccycloalkyl, C-Caryl, C-Caryl once or more than once substituted by C-Calkyl; C-Caralkyl, (CH)Si—; or Rand Rare C-Calkyl, C-Ccycloalkyl, C-Caryl, C-Caralkyl or Rand Rare C-Calkyl, C-Ccycloalkyl which are interrupted or substituted by O or by N containing groups selected from C-Calkylamino, bis(C-Calkyl)amino or tris(C-Calkyl)ammonium; Rif n is 1 is H, C-Calkyl, C-Ccycloalkyl, C-Caralkyl, C-Caryl or acyl selected from the group consisting of the following acyls —C(═O)—H, —C(═O)—C-Calkyl, —C(═O)—C-dalkenyl, —C(═O)—C-Caryl, —C(═O)—C-Calkenyl-C-Caryl, —C(═O)—O—CCalkyl, —C(═O)—O—C-Caryl, —C(═O)—NH—C-Calkyl, —C(═O)—NH—C-Caryl and —C(═O)—N(CCalkyl); or Rand Rif n is 1 form together with the nitrogen atom to which they are attached a 5 to 12 membered ring which may contain additional heteroatoms, Rif n is more than 1 is di-, tri-, tetra-C-Calkylidene, diacyls, triacyls or tetraacyls and salts thereof.