Silicone compounds containing sterically hindered cyclic amine f

Details Silicone compounds containing sterically hindered cyclic amine f Silicone compounds containing sterically hindered cyclic amine f

1996-06-11

1998-08-11

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 28, 528 33, 528125, 528220, 528100, 528103, 528 88, 528 92G, C08G 7704

Patent

active

057928258

ABSTRACT:
The present invention relates to linear, cyclic or branched polyorganosiloxanes having, per molecule, at least three siloxy units, including at least one functional unit of formula: ##EQU1## where R.sup.1 represents a C.sub.1 to C.sub.4 alkyl or phenyl radical and X contains a secondary or tertiary cyclic amine functional group bonded to the silicon via an Si--A--C bond where A is a residue comprising a cyclic acetal group. X more specifically represents a monovalent group of formula: ##STR1## The present invention also relates to the use of such polyorganosiloxanes in polymers for improving in particular their photostabilization.

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