Minnesota Mining and Manufacturing Company

Pernod Ricard

Francesco Squarcia

Ivano Delprato

Claudio Fuganti

Massimo Barbeni

Walter Beltramini

Rosanna Cardillo

Paolo Cabella

Giuseppe Sacerdote

The process for the microbiological production of gamma (R) decanolide and/or gamma (R) octanolide involves the culture of a micro-organism selected from the group comprising Aspergillus niger, Cladosporium suaveolens, Phanerochaete chrysosporium and Pichia etchellsii in a culture medium that includes a vegetable oil, particularly castor oil, sunflower oil and coconut oil and their hydrolysates.

Process for the microbiological production of gamma (R) decanolide and

Silver halide light-sensitive emulsions are protected against latent image fading by an effective amount of a 2-unsubstituted N-alkenyl-thiazolium salt compound.

Silver halide emulsion containing a 2-unsubstituted N-alkenyl-thiazolium

5-hydroxy-6-acylamino-benzoxazole-2-one compounds, such as those responding to the formula: ##STR1## wherein m is 0, 1; R represents a substituted or unsubstituted alkyl, aryl group or a heterocyclic group; R.sub.1 represents a substituted or unsubstituted alkyl or aryl group or R.sub.2 --X--, wherein X represents a member selected from the group consisting of CO, SO.sub.2, OCOCO and NHCO and R.sub.2 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; and V and W, the same or different, represent hydrogen, halogen or a lower alkyl or alkoxy group, are described as cyan dye-forming couplers for use in silver halide color photographic elements and processes.

2-equivalent cyan dye-forming 5-hydroxy-6-acylamino-benzoxazole-2-one

Growing community of inventors

Bologna, Italy

Francesco Squarcia