US 4,065,427 AGranted

Polychromophoric heterocyclic ultraviolet stabilizers and their use in organic compositions

AssigneeEastman Kodak Company

InventorsDavid M. Pond, Richard H. S. Wang, Gether Irick, Jr.

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Abstract

The invention relates to polychromophoric heterocyclic ester compounds which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing a stabilizing amount of these polychromophoric heterocyclic ester compositions to prevent such degradation. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may also be incorporated into the organic compositions in the polymer melt or dissolved in the polymer dope, coated on the exterior of the molded article, film or extruded fiber.

Claims20

Dependent claims

An organic composition susceptible to ultraviolet light degradation stabilized against such degradation with a stabilizing amount of at least one aromatic ester compound having the formula:

##STR20## wherein A is a group having the structure:
##STR21## ##STR22## and B is a group having the structure:
##STR23## wherein Q is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms;
R.sub.1, r.sub.2, r.sub.3 and R.sub.4 are hydrogen, lower alkyl, phenyl, chlorine, bromine, lower alkyl phenyl, lower alkyloxy, carboxy, nitrile;
I is the same as R.sub.1, R.sub.2, R.sub.3 and R.sub.4, and is present on all positions of the benzenoid ring, except the carbon atom attached to the Y substituent and the carbon atoms attached to the carboxyl group connecting the heterocyclic aromatic A group with the heterocyclic aromatic B group.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/730,120Filed 7 Oct 1976 · division
Priority: 14 Nov 1974
Granted: 27 Dec 1977
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61K 8/49
Containing organic compounds: containing heterocyclic compounds
A61K 8/496
With more than one nitrogen as the only hetero atom: triazoles or their condensed derivatives, e.g. benzotriazoles
A61Q 17/04
Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g.…
D06M 13/248
With compounds containing sulfur or phosphorus: with compounds containing sulfur