NEW YORK - Stanislaw (Stanley) B. Skora, a developer of additives for powder coatings and founder of Estron Chemical Inc., died May 27 in New York after a long battle with cancer. He was 69.

Dr. Skora, who was born in Poland, emigrated from Europe to the United States in 1969 to take a research position with Reichhold Inc. Dr. Skora, who had previously worked for BASF in Germany, founded Estron Chemical in 1976 with the objective of developing additives and resins for the expanding powder-coatings industry. The company grew to become an important supplier to the powder-coatings segment.

Dr. Skora's son and the current president of Estron, Alexander Skora, said his father was regarded as an authority on various coatings-technology chemistries, but achieved his most notable successes with acrylic polymers. Dr. Skora held a number of patents and invented several additive and resin products used in powder and liquid coatings, including flow and leveling agents, matting agents, and others.

In addition to his son, Dr. Skora is survived by his wife, Ingrid, and one granddaughter.