C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 51/06 (2006.01) B32B 25/08 (2006.01) B32B 27/08 (2006.01) B32B 27/28 (2006.01) B32B 27/32 (2006.01) C08L 23/02 (2006.01) C08L 23/26 (2006.01) C08L 25/04 (2006.01) C08L 53/00 (2006.01) C08L 53/02 (2006.01) F25D 23/06 (2006.01)
Patent
CA 2164487
Disclosed herein is a composition for barrier layers for use in insulative cabinet walls structures, particularly those used in appliances such as refrigerators and dishwashers. The compositions of the barrier layer is resistant to the action of polyurethane foam blowing agents, and has (i) an effective amount of a modified polyolefin, which is most preferably, a polyethylene modified with a compound selected from the group consisting of maleic anhydride, maleic acid, maleic anhydride derivatives, maleic acid derivatives, and mixtures thereof; and (ii)an effective amount of a rubber. Optionally, and most preferably, the barrier layer composition may further contain (iii) an effective amount of a polyolefin selected from the group consisting of polyethylene, polypropylene, polybutylene, and copolymers thereof. The invention further provides thermoformable composites incorporating the above-described barrier layer as well as insulative cabinet wall structures incorporating the thermoformable composite. Finally, the invention further provides a method of making a thermoformable composite incorporating the barrier layer of the invention.
Basf Corporation
Robic
LandOfFree
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