Process for the preparation of sterically hindered nitroxyl ethers
申请人:Schöning Kai-Uwe
公开号:US20100249401A1
公开(公告)日:2010-09-30
The present invention relates to a novel process for the preparation of a sterically hindered nitroxyl ether from the corresponding sterically hindered nitroxyl radical by reacting it with a carbonyl compound and a hydroperoxide. The compounds prepared by this process are effective stabilizers for polymers against harmful effects of light, oxygen and/or heat, as flame-retardants for polymers and as polymerization regulators.
[EN] PROCESS FOR THE PREPARATION OF STERICALLY HINDERED NITROXYL ETHERS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ÉTHERS DE NITROXYLE STÉRIQUEMENT ENCOMBRÉS
申请人:CIBA SC HOLDING AG
公开号:WO2008003602A1
公开(公告)日:2008-01-10
[EN] The present invention relates to a novel process for the preparation of a sterically hindered nitroxyl ether from the corresponding sterically hindered nitroxyl radical by reacting it with a carbonyl compound and a hydroperoxide. The compounds prepared by this process are effective stabilizers for polymers against harmful effects of light, oxygen and/or heat, as flame-retardants for polymers and as polymerization regulators. [FR] La présente invention concerne un procédé innovant de préparation d'un éther de nitroxyle stériquement encombré à partir du radical nitroxyle stériquement encombré correspondant en le faisant réagir avec un composé de carbonyle et un hydropéroxyde. Les composés préparés par ce procédé sont des stabilisants efficaces pour les polymères contre les effets nuisibles de la lumière, de l'oxygène et/ou de la chaleur, en tant qu'ignifugeants pour les polymères et que régulateurs de polymérisation.
Sterically hindered amines
申请人:BASF SE
公开号:EP2319832A1
公开(公告)日:2011-05-11
The present invention relates to an intermediate of the formula
, wherein R1 is linear C1-C7alkyl, and
to a process for the preparation of said intermediate.
Further, the present invention relates to a compound of the formula (A) which can be prepared by using said intermediate, and to an organic material stabilized with said compound.
wherein
X is a group of the formula (A-1) or (A-2)
and the radicals R1 are independently of one another linear C1-C7alkyl;
Y1 is C10-C20alkyl; and
Z1 is a direct bond or C2-C12alkylene uninterrupted or interrupted by sulfur.