Polysilanes

Details Polysilanes Polysilanes

1997-12-22

1999-12-21

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524267, 528 15, 528 31, 556430, 556470, C08K 554

Patent

active

060050365

DESCRIPTION:

BRIEF SUMMARY
The instant invention relates to a composition containing an organic material subject to oxidative, thermal or actinic degradation and a polysilane derivative, to the use of polysilane derivatives as process stabilizers and to novel polysilane derivatives.
Polyphenylsilanes and their use in photography are for example described in Derwent 94-297018/37. Photo and radiation-sensitive organopolymeric materials containing silane bonds are described in EP-A-129 834. The use of polysilane derivatives as fibres and films is described in U.S. Pat. No. 5,241,029. Polyolefin compositions comprising an organic polysilane are described, for example, in JP-A-Sho 63/105 048 and JP-A-Hei 3/212 438. Poly[(phenylsilylene)ethylene] grafted on polyethylene is described in Chemical Abstracts 73:67193.
In particular, the instant invention relates to a composition containing an organic material subject to oxidative, thermal or actinic degradation and at least one compound of the formula (I) ##STR2## wherein p+q is a number from 2 to 100 and q varies from 0 to 50% of the sum of p+q; alkyl, C.sub.5 -C.sub.12 cycloalkyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl; phenyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; naphthyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; or C.sub.7 -C.sub.9 phenylalkyl unsubstituted or mono-, di- or tri-substituted on the phenyl by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl; phenyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; naphthyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and or C.sub.2 -C.sub.20 alkanoyl; C.sub.7 -C.sub.9 phenylalkyl unsubstituted or mono-, di- or tri-substituted on the phenyl by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; chlorine, bromine, a group --(CH.sub.2).sub.2-3 --Si(E).sub.3 or a group --N(R).sub.2 with the radicals E being independently of one another C.sub.1 -C.sub.8 alkyl or phenyl and the radicals R being independently of one another hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.5 -C.sub.12 cycloalkyl or phenyl unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.2 -C.sub.20 alkanoyl; X.sub.2 which are identical or different are C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.12 alkylene interrupted by oxygen or a group >N--R with R being as defined above; C.sub.2 -C.sub.12 alkenylene, C.sub.2 -C.sub.12 alkynylene, phenylene, biphenylene or a group of the formula (II) ##STR3## wherein R.sub.3 and R.sub.4 which are identical or different have one of the meanings given for R.sub.1 and R.sub.2 and Z is oxygen, a group >N--R or a group --N(R)--N(R)-- with R being as defined above; and R.sub.1 and R.sub.2 or are hydrogen, a group --OSi(E).sub.3 or a group --Si(E).sub.3 with E being as defined above; when p+q is a number from 3 to 10, A and B together also form a direct bond; and each of the radicals R.sub.1, R.sub.2, X.sub.1, X.sub.2 and Y as well as the variables m and n have the same or different definitions in the recurring structural units contained in the formula (I) and, when the compounds of the formula (I) are copolymeric, they have a random, alternate or block distribution of the individual structural units.
Examples of alkyl having not more than 18 carbon atoms are methyl, ethyl, propyl, isopropyl, butyl, 2-butyl, isobutyl, t-butyl, pentyl, 2-pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, t-octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, hexadecyl and octadecyl. In the compounds of the formula (I), a preferred meaning of R.sub.1 and R.sub.2 is C.sub.1 -C.sub.10 alkyl, particularly C.sub.1 -C.sub.8 alkyl, for example C.sub.1

REFERENCES:
patent: 5087685 (1992-02-01), Satori et al.
patent: 5087719 (1992-02-01), Tilley et al.
patent: 5663271 (1997-09-01), Hatanaka
Derwent Abst. 361941 for JP 04264132.
Derwent Abst. 186472 for JP 06122796.

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