Caprolactam → HCID 23686479, compound

Participants

Reaction Conditions

Reaction Steps

Sodium caprolactamate is prepared from sodium tert. butoxide and dissolved in caprolactam in the amount of 0.3 mol %. 0.3 Mol % of 2,2,4-trimethyl-3-oxopentanoyl-(4'-phenylazo)aniline is dissolved in the solution thus obtained. The polymerization product containing 89.5% of thecolored polyamide is obtained after heating to 180° C for 15 minutes; the polyamide contains 100% of the dye incorporated therein. Evenif the polymerization is carried out for 60 minutes, 96.5% of the polymer is formed which exhibits over 90% of the original color absorption. On thecontrary, if 2-benzoyl-2-(4'-dimethylaminophenylazo)-acetanilide is used (adye of the Hansa Yellow type), only 10-20% of the original color absorptionremains in the polymer under the same conditions.

Provenance & Evidence