Robert Charles “Bob” Thies of Middlebury, a former Ridgefielder who had been a Union Carbide executive, died of cancer at his home Sunday morning. He was 84 years old and husband of the late Joy Thies.

Mr. Thies was born on Nov. 25, 1928, in Queens, N.Y., to Henry and Ellie Thies. He graduated from The City College of New York with a bachelor of science in chemistry.

Shortly after college, he met and married Joy Hart of New York, an artist and fashion model.  He then served in the Navy during the Korean War as an electronics specialist.

After the Navy, Mr. Thies took additional classes in chemistry at NYU, and began his career as a chemist at GAF. Preferring the business side of GAF, he soon became a salesman in the St. Louis office.  From there he moved to the San Francisco, Chicago, and New York offices before he left to join Union Carbide Corporation in 1963.  There, he worked in sales and marketing at the firm’s headquarters in New York City and then subsequently Danbury, where he was the marketing manager of the Hydrocarbons Group until his retirement in 1986.

Mr. Thies lived in Ridgefield from 1978 to 2007.

His interests included electronics and computers, sailing, and reading, his family said. “He was a devoted husband and father, and loved to spend weekends with his family.”

He is survived by his two sons and their spouses, Scott and Sharon Thies of Seattle, Wash., and Mark and Kathy Thies of North Salem, N.Y., as well as three grandchildren, Paul, Jack and Caroline Thies.

He was preceded in death by his wife,  and his brother Henry “Hank” Thies of Smithtown, N.Y.

Services will take place Saturday  at noon at St. Stephen’s Church.

Friends may call at Kane Funeral Home in Ridgefield on Friday from 5  to 8 p.m.