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Caprolactam reaction with isocyanates

Impurities in caprolactam have also been destroyed by oxidation with ozone followed by distillation. Ozonation treatment of waste caprolactam leaves no ionic impurities. However, the most commonly used oxidizing agents are potassium permanganate, perboric acid, perborate, and potassium bromate. Treatment of caprolactam with these oxidizing agents is carried out in a neutral medium at 40-60°C. Strongly alkaline or acidic conditions accelerate the oxidation of caprolactam to form isocyanates. The undesirable oxidation reaction is fast above pH 7 because of the reaction with isocyanate to form carbamic acid salts, which shifts the equilibrium to form additional isocyanate. [Pg.703]

AP (504-29-0) Reacts with water, forming a strong base. Violent reaction with strong oxidizers, strong acids, isopropyl percarbonate, nitrosyl perchlorate. Aqueous solutions incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, glycols, isocyanates, ketones, maleic anhydride, nitrates, nitromethane, phenols, vinyl acetate. APARASIN (58-89-9) see lindane. APAVINPHOS (7786-34-7) see MEVINPHOS . [Pg.92]

See other pages where Caprolactam reaction with isocyanates is mentioned: [Pg.345]    [Pg.575]    [Pg.345]    [Pg.154]    [Pg.329]    [Pg.836]    [Pg.48]    [Pg.48]    [Pg.49]    [Pg.49]    [Pg.50]    [Pg.50]    [Pg.51]    [Pg.51]    [Pg.51]    [Pg.52]    [Pg.52]    [Pg.52]    [Pg.53]    [Pg.53]    [Pg.54]    [Pg.54]    [Pg.55]    [Pg.55]    [Pg.55]    [Pg.56]    [Pg.56]    [Pg.57]    [Pg.57]    [Pg.58]    [Pg.58]    [Pg.59]    [Pg.61]    [Pg.61]    [Pg.62]    [Pg.62]    [Pg.63]    [Pg.63]    [Pg.64]    [Pg.64]    [Pg.64]    [Pg.64]    [Pg.65]    [Pg.65]    [Pg.65]    [Pg.66]    [Pg.67]    [Pg.79]   
See also in sourсe #XX -- [ Pg.138 ]



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Caprolactam

Caprolactamate

Caprolactams

Isocyanate reaction with caprolactams

Isocyanates reaction

Reaction with isocyanate

With isocyanates

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