Urethane composition for coating film waterproof material
AssigneeDyflex Corporation
InventorsKenji YOSHINO, Yoichi KAI
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Abstract
A urethane composition is disclosed for a coating film waterproof material which does not contain any of specific chemical substances, has work efficiency that is the same as that of a general-purpose highly extensible urethane coating film waterproof material, an elongation rate of a highly extensible urethane coating film waterproof material, and strength of a high-strength urethane coating film waterproof material, has no decrease in weather resistance of a top coat resulting from a plasticizer, and is suitable for a non-bleeding type of coating by hand that is not affected by migration of a low fraction of asphalt.
Claims4
A urethane composition for a coating film waterproof material comprising:
- a primary material (A) which contains an isophorone diisocyanate prepolymer formed as a reaction of polypropylene glycol which has two or more hydroxyl groups and whose hydroxyl group equivalent is 1,500 or more, and short-chain polyhydric alcohol with isophorone diisocyanate;
- and
- a curing material (B) which contains diethyl toluene diamine, water, polypropylene glycol which has two or more hydroxyl groups and whose hydroxyl group equivalent is 1,500 or more, and a terminal-esterified polyfunctional polyether-based or polyoxyalkylene monoalkyl ether acetate ester-based plasticizer.
Dependencies are inferred from the claim text.