82537-67-5Relevant articles and documents
PROCESS FOR PREPARING 3-ALKYL-7,7,9,9-TETRAMETHYL-1,3,8-TRIAZASPIRO[4,5]DECANE DERIVATIVE
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Page/Page column 13-14, (2008/12/08)
A process for preparing a 3-alkyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4,5]decane derivative of the formula (IV) wherein R1 represents for example hydrogen and R2 represents a C6-C18 alkyl group; which comprises reacting a 7,7,9,9-tetramethyl-1,3,8-triazaspiro[4,5]decane derivative of the formula (I) wherein R1 has the same meaning as defined above, or a salt thereof with a base; using an alkylating agent of the formula (II) R2-X wherein R2 has the same meaning as defined above and X represents an elimination group; in an inert solvent in the presence of a quaternary ammonium salt of the formula (III) (R3)4N+ Y- wherein R3 independently represents a radical selected from the group consisting of an alkyl group and an aralkyl group, and Y- represents an anion; and a base.
4-Formyl amino-n-methylpiperidine derivatives, the use thereof as stabilisers and organic material stabilised therewith
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, (2008/06/13)
The present invention relates to 4-formylamino-N-methylpiperidine derivatives of the formula (I) where the variables are as defined in the Description, to a process for preparing these piperidine derivatives, to the use of these piperidine derivatives of the invention, or prepared according to the invention, for stabilizing organic material, in particular for stabilizing plastics or coating materials, and also to the use of these piperidine derivatives of the invention, or prepared according to the invention, as light stabilizers or stabilizers for wood surfaces. The present invention further relates to stabilized organic material which comprises these piperidine derivatives of the invention or prepared according to the invention.
Stabilizer mixture
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, (2008/06/13)
Mixtures of compounds comprising a compound G2 and at least one further compound from the group G0, G1, G3, G4, G5, G6, the compounds G0-G6 each corresponding to formula (I) in which, in the compound G0, the radicals R1, R2, R3, R4, R5 and R6 are each hydrogen; G1, the radical R1 is Q and R2, R3, R4, R5 and R6 are each hydrogen; G2, the radicals R1 and R2 independently of one another are each Q and R3, R4, R5 and R6 are each hydrogen; G3 the radicals R1, R2 and R3 independently of one another are each Q and R4, R5 and R6 are each hydrogen; G4, the radicals R1, R2, R3 and R4 independently of one another are each Q and R5 and R6 are each hydrogen; G5, the radicals R1, R2, R3, R4 and R5 independently of one another are each Q and R6 is hydrogen; G6, the radicals R1, R2, R3, R4, R5 and R6 independently of one another are each Q; and Q and the other symbols are as defined in claim 1, are effective as stabilizers for organic material with respect to damaging exposure to light, oxygen and/or heat.