Two-component mixed polyurea resin composition production raw material and polyurea resin composition
AssigneeUnitika Ltd.
InventorShohei SAKASHITA
Life of this patent
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Abstract
A two-component mixed polyurea resin composition production raw material containing a component (A) that contains a polyisocyanate compound (a) and a component (B) that contains an aromatic polyamine compound (b), wherein the two-component mixed polyurea resin composition production raw material is characterized in that the usable time from immediately after component (A) and component (B) are mixed until the viscosity value measured in an organic-solvent-free state doubles is 10 minutes or longer.
Claims14
A two-component mixed polyurea resin composition production raw material comprising a component (A) containing a polyisocyanate compound (a) and a component (B) containing an aromatic polyamine compound (b), wherein
- the two-component mixed polyurea resin composition production raw material has the usable time until a viscosity value becomes twice a viscosity value measured in an organic-solvent-free state immediately after mixing the component (A) with the component (B) of 10 minutes or more.
A polyurea resin composition comprising:
- a component (A) containing a polyisocyanate compound (a);
- and
- a component (B) containing an aromatic polyamine compound (b), wherein
- all of the following conditions (1) to (3) are satisfied:
- (1) the usable time until a viscosity value becomes twice a viscosity value measured in an organic-solvent-free state immediately after mixing the component (A) with the component (B) is 10 minutes or more;
- (2) the polyisocyanate compound (a) has a viscosity of 3,000 mPa·s or less at 25° C.;
- (3) the polyisocyanate compound (a) contains an aliphatic isocyanate compound or a derivative thereof.
A method for producing a polyurea resin composition, comprising mixing a component (A) containing a polyisocyanate compound (a) containing an aliphatic polyisocyanate compound or a derivative thereof in an amount of more than 50% by mass with a component (B) containing an aromatic polyamine compound (b) represented by the following general formula (1):
- wherein R represents an n-valent polyalkylene, polyalkylene ether or polyalkylene polyester having an average molecular weight of 80 or more, and A represents an oxygen atom or an imino group, provided that the polyalkylene may contain an unsaturated bond;
- m represents an integer of 1 to 3, and n represents an integer of 2 to 4.
A coating method comprising:
- preparing a coating material by mixing a component (A) containing a polyisocyanate compound (a) containing an aliphatic polyisocyanate compound or a derivative thereof in an amount of more than 50% by mass with a component (B) containing an aromatic polyamine compound (b) represented by the following general formula (1);
- and
- applying the prepared coating material to an object to be coated,
- wherein R represents an n-valent polyalkylene, polyalkylene ether or polyalkylene polyester having an average molecular weight of 80 or more, and A represents an oxygen atom or an imino group, provided that the polyalkylene may contain an unsaturated bond;
- m represents an integer of 1 to 3, and n represents an integer of 2 to 4.
Dependencies are inferred from the claim text.