Alkoxyamines containing unsaturated groups

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C525S479000, C528S027000, C528S031000, C546S247000, C546S248000, C526S258000

Reexamination Certificate

active

07812100

ABSTRACT:
The invention relates to new alkoxyamines suitable for hydrosilylation reactions, to siloxane modified alkoxamines and to siloxane modified polymers as well as to their use. The alkoxamines are compounds of formula (I) or (II) wherein A is a group capable of forming a stable free nitroxyl radical A. which is bound via its oxygen atom to the carbon atom; R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.1-C.sub.18-alkyl, C.sub.3-C.sub.8cycloalkyl or phenyl which are unsubstituted or substituted by NO.sub.2, halogen, amino, hydroxy, cyano, carboxy, C.sub.1-C.sub.4alkoxy, C.sub.1-C.sub.4alkylthio, C.sub.1-C.sub.4alkylamino or di(C.sub.1-C.sub.4alkyl)amino; R.sub.3, R.sub.4 and R.sub.5 independently of one another are hydrogen or C.sub.1-C.sub.18alkyl or phenyl; or R.sub.3 and R.sub.5 together with the linking group C.dbd.C form a 5 to 12 membered ring; R.sub.6 is X hydrogen or C.sub.1-C.sub.l8alkyl or phenyl; X is O, NH or NR.sub.7, wherein R.sub.7 is C.sub.1-C.sub.18alkyl, C.sub.3-C.sub.8cycloalkyl or phenyl; Y is a direct bond, C.sub.1-C.sub.30alkylene or C.sub.6-C.sub.12arylene.

REFERENCES:
patent: 6831130 (2004-12-01), Fujita et al.
patent: 6936670 (2005-08-01), Kramer et al.
patent: 7619050 (2009-11-01), Nesvadba et al.
patent: 2005/0065119 (2005-03-01), Couturier et al.
patent: 2005/0288435 (2005-12-01), Pfaendner et al.
patent: 2006/0160973 (2006-07-01), Harada et al.
C. Wetter et al., Chem. Commun., (2004), pp. 174-175.

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