Benzotriazole uv-absorbers, having absorption spectrum shifted towards long-wave side, and use thereof

FIELD: chemistry.

SUBSTANCE: described are novel benzotriazole UV-absorbers, having absorption spectrum shifted towards the long-wave side with considerable absorption in the region up to 410-420 nm, having general formulae (a)-(k) (structural formula and values of radicals are given in the description), composition which is stabilised with respect to UV radiation and containing novel UV-absorbers, and use of the novel compounds as UV light stabilisers for organic materials.

EFFECT: obtaining novel benzotriazole UV-absorbers, having absorption spectrum shifted towards the long-wave side.

13 cl, 23 ex, 2 tbl

 

The text descriptions are given in facsimile form.

1. The compound of formula (a)-(k):
,,
,,
,,
,and
,or
,
where R1denotes hydrogen, having a linear or branched chain alkyl containing 1 to 24 carbon atoms having a chain unsubstituted or substituted C1-C24alkyl having a linear or branched chain With2-C24alkenyl,5-C12cycloalkyl or3-C6quinil may also include one or more groups-O-, -S-, -NH - or-NR22or combinations thereof;
R22means having a linear or branched chain C1-C18alkyl having a linear or branched chain With2-C18alkenyl,5-C10cycloalkyl, phenyl, naphthyl or7-C15phenylalkyl;
R102denotes hydrogen, -CN, -COR24having a linear or branched chain With1-C24alkyl having a linear or branched chain With2-C18alkenyl,2-C6quinil,5-C12cycloalkyl, phenyl, naphthyl or7-C15phenylalkyl; and
R24indicates OR22, Other22N(R22)2or has the same meaning as R22.

2. The compound of formula (a)-(k) according to claim 1, where
R1denotes hydrogen,having a linear or branched chain alkyl, containing from 1 to 12 carbon atoms, or phenylalkyl containing from 7 to 15 carbon atoms;
R2means having a linear or branched chain alkyl containing from 1 to 12 carbon atoms, or phenylalkyl containing from 7 to 15 carbon atoms, phenyl, or the phenyl or phenylalkyl substituted on the phenyl ring by 1-3 alkilani containing from 1 to 4 carbon atoms.

3. Composition, stabilised against caused by light degradation, which includes:
(a) an organic material subject caused by light decay, which is a natural, semisynthetic or synthetic polymer or coating; and
(b) a compound of the formula (a)-(k) according to claim 1.

4. The composition according to claim 3, which further comprises a sterically hindered amine stabilizer and/or UV absorber selected from the group including SIM-triazine, oxanilide, hydroxybenzophenone, benzoate, α-cyanoacrylate and benzotriazole different from formulas (a)-(k)specified in claim 1.

5. The composition according to claim 3, in which the organic material is a natural, semisynthetic or synthetic polymer.

6. The composition according to claim 5, in which the polymer is a thermoplastic polymer.

7. The composition according to claim 3, in which the organic material is a coating.

8. The composition according to claim 7, in which the coating p is ecstasy a road surface.

9. The composition according to claim 7, where the coating applied to the substrate, which is sensitive to electromagnetic radiation with wavelengths of 380 nm.

10. The composition of claim 8, representing the car floor, including:
a) primer coating, which by electrolytic deposited on a metal substrate;
b) at least one pigmented primary coating that is in direct contact with a primer coating containing a compound of the formula (a)-(k) according to claim 1;
c) a transparent coating that is in direct contact with pigmented primary coating containing a UV-absorber selected from the group including SIM-triazine, oxanilide, hydroxybenzophenone, benzoate, α-cyanoacrylate and benzotriazole different from formulas (a)-(k)specified in claim 1; and
d) optional primer coating contains a compound of the formula (a)-(k) according to claim 1.

11. The composition according to claim 10, in which the primer coating contains a compound of the formula (a)-(k) according to claim 1.

12. The composition according to claim 3, in which the compound of formula (a)-(k) is contained in an amount of 0.1 to 30 wt.% in terms of the mass of organic material.

13. The use of the compounds of formula (a)-(k) according to claim 1 as an absorber of ultraviolet (UV) and visible (VIEW) radiation in the coating.



 

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19 cl, 9 ex, 2 tbl

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7 cl, 4 ex, 1 tbl

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23 cl, 3 tbl, 25 ex

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20 cl, 1 tbl, 3 dwg, 10 ex

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Antiviral compound // 2441010

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13 cl, 1 tbl, 10 ex

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FIELD: medicine, pharmaceutics.

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EFFECT: production of a pharmaceutical composition prevention or treatment of diseases caused by β-amyloid.

7 cl, 392 ex, 12 tbl

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