Basf Se Corporation

Ciba Specialty Chemicals Corporation

Dietmar Mäder

Kurt Hoffmann

Bruno Rotzinger

Pierre Rota-Graziosi

Hans-Werner Schmidt

Michèle Gerster

Neil Dunski

Kerstin Schrinner

Pascal Xanthopoulos

The invention describes a process for stabilizing an organic material against oxidative, thermal or light-induced degradation, which comprises incorporating therein or applying thereto at least a compound of the formula (I) wherein the general symbols are as defined in claim. The compounds of the formula I are especially useful as processing stabilizers for synthetic polymers. 

Stabilization of organic materials

The invention relates to a flame retardant composition, which comprises a) At least one ester of a phosphorus containing oxo acid selected from the group consisting of phosphonous and phosphorous acid; b) At least one flame retardant component based on a nitrogen compound; particularly melamine cyanurate, and c) A polyurethane polymer base.

Polyurethane flame retardant compositions

The present invention pertains to compositions comprising wherein Rand Rare each independently C-Calkyl or C-Calkyoxy,

Stabilization of polyether polyol, polyester polyol or polyurethane compositions

A composition containing (1) a crystalline polypropylene resin and (2) one or more &#x3b2;-nucleating agents of the formula (I), wherein R, Rand R, independently of one another, are C-Calkyl, C-Calkyl substituted by C-Calkylamino, di(C-Calkyl)amino, C-Calkyloxy or hydroxy; C-Calkenyl, C-Ccycloalkyl, C-CCycloalkyl substituted by 1, 2 or 3 C-Calkyl; cyclohexylmethyl; cyclohexylmethyl substituted by 1, 2 or 3 C-Calkyl; C-Ccycloalkenyl, C-Ccycloalkenyl substituted by 1, 2 or 3 C-Calkyl; phenyl substituted by 1, 2 or 3 radicals selected from the group consisting of C-C-oalkyl, C-Calkyloxy, hydroxy, halogen, trihalogenmethyl, trihalogenmethoxy, benzoyl, phenylamino, acylamino and phenylazo; C-Cphenylalkyl, C-Cphenylalkyl which is substituted on the phenyl by 1, 2 or 3 radicals selected from the group consisting of C-Calkyl, C-Calkoxy and hydroxy; naphthyl, naphthyl substituted by CCalkyl, adamantyl, or a 5 to 6 membered heterocyclic group; characterized in that the polypropylene resin has a content of &#x3b2;-form crystals of at least 10% calculated by means of the following equation &#x3b2;-form crystal content (%)=100&#xd7;P,/(P+P+P+P) where Pto Pare respective peak heights (maxima) of the a-form and Pis a peak height (maximum) of the &#x3b2;-form determined by wide angle X-ray scattering. 

&#x3b2; Crystalline polypropylenes

The invention describes novel mixtures comprising i) a processing stabilizer selected from the group consisting of hydroxylamine stabilizers, nitrone stabilizers, benzofuran-2-one stabilizers and/or a compound of the formula I wherein Ris C-Calkyl, Ris C-Calkyl, and ii) an antistatic agent selected from the group consisting of an ethoxylated amine and/or an ethoxylated amide, as stabilizers for protecting organic materials, in particular synthetic polymers, against oxidative, thermal or lightinduced degradation 

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Freiburg, Germany

Dietmar Mäder