Steven L Hauck

US Patent:

53402081, Aug 23, 1994

Filed:

Jun 16, 1993

Appl. No.:

8/077309

Inventors:

Steven M. Hauck - Piscataway NJ
Jeffrey P. Viola - Manalapan NJ

Assignee:

BASF Corporation - Parsippany NJ

International Classification:

A47B 8100

US Classification:

312406

Abstract:

A refrigerator cabinet is provided with a plastic liner, the inside wall of the refrigerator, which is resistant to chemical degradation by fluorocarbons. Freon and Freon substitutes used as blowing agents for foaming the insulation contained between an outer metal cabinet and on the inside wall of the refrigerator can cause blistering, cracking, and sometimes dissolution of materials used to form the plastic liner which is the inside wall of the refrigerator. There is provided a plastic liner which is resistant to those blowing agents and particularly to those blowing agents which are partially halogenated and tend to be more aggressive than Freon. The plastic liner wall maintains impact strength and toughness after exposure to fluorohydrocarbons conventionally employed in refrigerator units for in situ polyurethane foam production.

US Patent:

52211363, Jun 22, 1993

Filed:

Sep 12, 1991

Appl. No.:

7/758641

Inventors:

Steven M. Hauck - Piscataway NJ
Jeffrey P. Viola - Manalapan NJ

Assignee:

BASF Corporation - Parsippany NJ

International Classification:

A47B 8100

US Classification:

312406

Abstract:

A refrigerator cabinet is provided with a plastic liner, the inside wall of the refrigerator, which is resistant to chemical degradation by fluorocarbons. Freon and Freon substitutes used as blowing agents for foaming the insulation contained between the outer metal cabinet and the inside wall of the refrigerator can cause blistering, cracking, and sometimes dissolution of materials used to form the plastic liner, which is the inside wall of the refrigerator. There is now provided a plastic liner which is resistant to those blowing agents and particularly to those blowing agents which are partially halogenated and tend to be more aggressive than Freon. The plastic liner wall maintains impact strength and toughness after exposure to fluorohydrocarbons conventionally employed in refrigerator units for in situ polyurethane foam production.