Basf Se Corporation

Basf Aktiengesellschaft

Gunter Scherhag

Wolfgang Siegel

Klemens Massonne

Larry D Timberlake

Mark V Hanson

Matthias Maase

Klaus Mundinger

Dagmar Pascale Kunsmann-Keitel

Gerold Braun

Lars Wittenbecher

Alexander Tishkov

Calvin Emanuel

Ingo M&uuml;nster

The present invention is related to the use of specific cyclic and/or polymeric aryl-phosphines as flame retardants and to a method for reducing the flammability of organic material by incorporating into the material these specific cyclic and/or polymeric phosphines. Moreover, the invention is related to a polymeric composition containing a polymeric material and at least one of the specific cyclic and/or polymeric phosphines in an amount of from 1 to 15% by weight, based on the weight of the polymeric material. The invention also relates to a composition comprising at least one of the specific cyclic and/or polymeric phosphines and at least one polymerizable monomer.

Cyclic phosphines as flame retardants

A process for preparing N,N-dihydrocarbylhydroxylamines of the general formula (I) where R, R, Rand Rare selected independently from among hydrogen, aliphatic, cycloaliphatic, heteroaromatic and aromatic radicals, or Rand Rand/or Rand Rare joined to form a ring, and not more than one radical among R, R, Rand Ris hydrogen, which comprises the steps a) reaction of hydroxylamine HNOH or a salt of hydroxylamine with a compound of the general formula (II) or (III) where R, R, Rand Rare as defined in formula (I), b) hydrogenation of the compound formed in step a) in the presence of a catalyst, c) further reaction of the compound formed in step b) with a compound of the general formula (II) or (III) and hydrogenation of the reaction mixture in the presence of a catalyst and d), if appropriate, reaction of the salt of the dihydrocarbylhydroxylamine formed in step c) with a base.

Process for preparing symmetrical and unsymmetrical N,N-dihydrocarbylhydroxylamines

The present invention describes a process for preparing isophoronenitrile by adding HCN to isophorone. The catalyst used is CaO which has a BET surface area of >1.5 m /g. The use of such a catalyst achieves high yields and selectivities.

CaO-catalyzed preparation of isophoronenitrile

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Heidelberg, Germany

Gunter Scherhag