Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Primo Carrozza

Valerio Borzatta

Giovanni Da Roit

Manuele Vitali

Nicola Lelli

Piero Piccinelli

Markus Grob

Chryssostomos Chatgilialoglu

Andrea Landuzzi

Ramanathan Ravichandran

Roberto Scrima

The invention relates to novel compounds of the formula I, II; III or IV wherein the general symbols are as defined in claim. These compounds are useful as surface modifiers for polymers in order to improve resistance to fog formation or water and oil repellency.

Permanent surface modifiers

The invention relates to novel compounds of the formula I, II; III or IV wherein the general symbols are as defined in claim 1. These compounds are useful as surface modifiers for polymers in order to improve resistance to fog formation or water and oil repellency. 

A compound containing a silane backbone and a group of formula (A) wherein R is hydrogen, C -C alkyl, &mdash;O, &mdash;OH, &mdash;CH CN, C -C alkoxy, C -C cycloalkoxy, C -C alkenyl, C -C phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C -C alkyl; or C -C acyl; is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.

Polysilane stabitizers containing sterically hindered amine groups

Polysilanes

Peperidine compounds containing silane groups as stabilizers for organic

The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilizing an organic material against thermal, oxidative and light-induced degradation.

Piperidine compounds containing silane groups for use as stabilizers for

Compounds of the formula (I) ##STR1## in which m and n are numbers from 1 to 50; A is --O-- or &gt;N--R.sub.6 where R.sub.6 is e.g. hydrogen or C.sub.1 -C.sub.18 alkyl; R.sub.1 and R.sub.4, which may be identical or different, are C.sub.1 -C.sub.18 alkyl, phenyl, C.sub.1 -C.sub.8 alkoxy, OH, ONa or OK; R.sub.2 is e.g. C.sub.2 -C.sub.12 alkylene; R.sub.3 is e.g. hydrogen or C.sub.1 -C.sub.8 alkyl; R.sub.5 is e.g. a group of the formula ##STR2## in which R.sub.9 is e.g. 2,2,6,6-tetramethyl-4-piperidyl; A' has one of the meanings of A; p is e.g. 1 and R.sub.10 is e.g. C.sub.2 -C.sub.18 alkylene; X.sub.1 has one of the meanings of R.sub.1 or is a group (R.sub.27).sub.3 SiO-- where R.sub.27 is C.sub.1 -C.sub.18 alkyl; X.sub.2 is hydrogen, Na, K, C.sub.1 -C.sub.8 alkyl or a group (R.sub.27).sub.3 Si-- with R.sub.27 as defined above and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together can also represent a direct linkage; are useful as stabilizers for organic materials against degradation induced by light, heat or oxidation.

Piperidine compounds containing silane groups as stabilizers for organic

New stabilizers of the formula (I) ##STR1## in which m+n is a number from 1 to 100 and n varies from zero to 90% of the sum of m+n,

1-hydrocarbyloxy-piperidine compounds containing silane groups for use

The present invention relates to novel piperidine compounds of the formula (I) V5 V pV ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 are as defined in the text. The compounds of the invention can be used as fight stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.

Derivatives of 2,2,6,6-tetramethyl-4-piperidinol for use as light

Novel polymethylpiperidine compounds of general formula (I) containing silane groups and effective as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials. The meanings of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and n are defined in the text. ##STR1##

Siloxane derivatives of 2,2,6,6-tetramethylpiperidine compounds as

A process for preparing a compound of the formula (I) ##STR1## in which R.sub.1 is e.g. hydrogen, R.sub.2 is e.g. C.sub.2 -C.sub.12 alkylene and R.sub.3 is e.g. C.sub.1 -C.sub.18 alkyl; which process comprises reacting, in water, in the absence of an organic solvent, a compound of the formula (II)

Process for preparing

The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilizing an organic material against thermal, oxidative and light-induced degradation.

The present invention relates to novel co-oligomers containing recurring units of the formulae (Ia) and (Ib) ##STR1## which have a number average molecular weight of e.g. from 1,000 to 5,000 and a (Ia):(Ib) ratio of e.g. 1:1, and in which R.sub.1 and R.sub.5 are e.g. N-(2,2,6,6-tetramethyl-4-piperidyl)-n-butylamino, R.sub.2 is e.g. 2,2,6,6-tetramethyl-4-piperidyl, R.sub.3 is e.g. hexamethylene, R.sub.4 is e.g. hydrogen and X is e.g. a group ##STR2## These compounds are particularly suitable for stabilizing organic materials against light, heat and oxidation.

Piperidine-triazine co-oligomers for use as stabilizers for organic

The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilising an organic material against thermal, oxidative and light-induced degradation.

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Verona, Italy

Primo Carrozza