Expandable powder coating composition, method of coating a...

F - Mech Eng,Light,Heat,Weapons – 16 – M

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403/14, 117/161

F16M 1/00 (2006.01) B05D 7/14 (2006.01) B32B 5/18 (2006.01) B32B 27/40 (2006.01) C08G 18/40 (2006.01) C08G 18/62 (2006.01) C08G 18/80 (2006.01) C08G 18/86 (2006.01) C08J 9/06 (2006.01) C09D 175/04 (2006.01) F16L 59/02 (2006.01)

Patent

CA 1309554

EXPANDABLE POWDER COATING COMPOSITION, METHOD OF COATING A SUBSTRATE WITH HEAT-INSULATING FOAM AND COMPOSITE MATERIAL OBTAINED THEREBY Abstract An expandable, powder coating composition is disclosed which comprises (a) a thermoplastic resin containing a hydroxyl group-containing polymer, (b) a cross-linking agent containing a polyisocyanate compound which is capable of reacting with the hydroxyl groups of the polymer to crosslink the polymer at a temperature higher than the melting point of the thermoplastic resin and which is solid at room temperature, and (c) a blowing agent capable of decomposing and generating a gas when heated to a temperature higher than the melting point of the thermoplastic resin. Powder coating with the coating composition can give a heat-insulating, foamed sheath or lining over the surface of a metal tube or box to be used in air conditioners.

584814

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