Process for producing polyurea resin

Details Process for producing polyurea resin Process for producing polyurea resin

C - Chemistry, Metallurgy

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402/168

C08G 18/50 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/68 (2006.01)

Patent

CA 1332646

ABSTRACT OF THE DISCLOSURE A process for producing polyurea resin in which an amine compound containing aromatic polyamine and specific aminobenzoate derivative and polyisocyanate are reacted. The amine compound has the formula: Image wherein R represents n-valent polyalkylene, polyalkylene ether, or polyalkylene polyester group with an average molecular weight of 200 or more, provided that the group may contain unsaturated bond; A represents an oxygen atom or an imino group, m is an integer of 1 to 3, and n is an integer of 2 to 4. The polyurea resin is decreased in temperature dependence and improved in hardness, strength, toughness, and heat resistance.

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