Industrial Technology Research Institute

Hsiang-In Tang

Tun-Fun Way

Lien-Tai Chen

Cheng Yu Yeh

A method for preparing a nylon 6 copolymer containing dimeric acid comonomers. The method includes reacting 80.0&tilde;99.9 mol % of caprolactam, 0.1&tilde;3.0 mol % of dimeric acid and 0.1&tilde;3.0 mol % of 2-methyl-1,5-pentadiamine in a polymerization reaction. Moreover, the invention provides a method for preparing a nylon 66 copolymer containing dimeric acid comonomers, which comprising reacting 60.0&tilde;90 mol % of hexadiacid and hexadiamine, 0.1&tilde;3.0 mol % of dimeric acid and 0.1-3.0 mol % of 2-methyl-1,5-pentadiamine in a polymerization reaction. The reaction temperature for both of the methods are at 200&tilde;280&deg; C.

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Hsiang-In Tang