To provide a structure superior in crack traceability, finishing characteristics of an upper layer and the resistance to blistering.
The urethane type coated structure comprises at least two layers of a lower layer (A) and an upper layer (B), wherein the lower layer (A) includes a polyurethane resin with a Shore A hardness of at least 85 and an elongation of at least 200% made by curing (a-1) an urethane prepolymer with isocyanate group at the molecular end, (a-2) a compound with an active hydrogen and (a-3) an activated aluminum powder as an essential component, and the upper layer (B) includes a polyurethane resin with a Shore D hardness of at least 50 made by curing (b-1) a polyisocyante compound, (b-2) a bisphenol modified active hydrogen compound, (b-3) a natural fat or its derivative and (a-3) the activated aluminum powder as an essential component.
COPYRIGHT: (C)2007,JPO&INPIT
TAKADA YASUHIRO
JPH0649975A | 1994-02-22 | |||
JP2001317166A | 2001-11-16 | |||
JP2002086627A | 2002-03-26 | |||
JPH07138468A | 1995-05-30 |
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