NEW YORK, JAN. 21 -- Du Pont Co. unveiled a new line of refrigerants today designed to eventually replace existing chlorofluorocarbons, or CFCs, which have been linked to causing a hole in the Earth's ozone layer.

The new products have "low or no potential to deplete ozone," said Elwood P. Blanchard, Du Pont vice chairman.

The Suva-brand refrigerants are designed for new commercial and industrial refrigeration systems, new automobile air conditioners and new home refrigerators.

Du Pont said it is developing other products, called Suva blends, to replace refrigerants in existing and new systems in home refrigerators, automobiles and refrigerated transport.

The Suva refrigerants eventually are meant to replace coolants now used in refrigerators and air conditioners.

Other chemicals are replacing CFCs used in inflating foam and cleaning fluids.

Refrigerants are one of the largest markets for CFCs, using 40 percent of the coolant gas.

In 1989, an international agreement known as the Montreal Protocol called for the complete elimination of CFCs by the year 2000.

Tony Vogelsberg, environmental manager for Du Pont Fluorochemical, said the new refrigerants will "take care of the largest share of the refrigerant market that has to be phased out by the end of the century."

Vogelsberg said the Suva refrigerants will cause only about one-tenth as much "global warming" as currently used CFC products.