2-cyanoacrylic acid esters

Details 2-cyanoacrylic acid esters 2-cyanoacrylic acid esters

C - Chemistry, Metallurgy

07

C

C07C 255/41 (2006.01) A61K 47/14 (2006.01) A61K 47/22 (2006.01) C07B 63/04 (2006.01) C07C 255/19 (2006.01) C07C 255/23 (2006.01) C07C 255/30 (2006.01) C07C 255/42 (2006.01) C07C 323/12 (2006.01) C07D 211/46 (2006.01) C07D 311/58 (2006.01) C07H 13/04 (2006.01) C08K 5/315 (2006.01) C08K 5/3435 (2006.01) C09D 7/12 (2006.01) C09K 15/16 (2006.01)

Patent

CA 2204430

Described are 2-cyanoacrylic acid esters (I) in which the groups are defined as follows: R1 and R2 are hydrogen or a group with an isocyclic or heterocyclic ring system having at least one iso-aromatic or hetero-aromatic nucleus, whereby one of the groups R1 and R2 must be different from hydrogen, n is from 2 to 10, X in the case when n = 2 is a group of the formula (II) in which m is from 2 to 8, X in the case when n > 2 is an n-hydric aliphatic or cycloaliphatic polyol group with 3 to 20 C-atoms, whereby the cycloaliphatic polyol group may include 1 to 2 hetero-atoms and the aliphatic polyol group may include up to 8 non-adjacent oxygen atoms, sulphur atoms, imino groups or C1-C4 alkylimino groups in the carbon chain. Compounds of the formula (I) are suitable for use as light-protection agents.

L'invention concerne des esters d'acide 2-cyanoacrylique (I) dans lesquels les restes ont la notation suivante: R?1¿ et R?2¿ sont hydrogène ou un reste avec une combinaison isocyclique ou hétérocyclique possédant au moins un noyau iso-aromatique ou hétéro-aromatique, l'un des restes R?1¿ ou R?2¿ devant être différent de l'hydrogène, n vaut de 2 à 10, X, lorsque n = 2, est un reste de la formule (II) où m vaut de 2 à 8, X, lorsque n > 2, est le reste d'un polyol aliphatique ou cycloaliphatique n-hydrique avec 3 à 20 atomes de C, un reste cycloaliphatique pouvant contenir également 1 à 2 hétéro-atomes, et un reste aliphatique pouvant contenir dans la chaîne carbonée jusqu'à 8 atomes d'oxygène, atomes de soufre, groupes imino ou alkylimino C¿1?-C¿4? non adjacents. Les composés de la formule (I) s'utilisent comme filtres solaires.

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