Epsilon caprolactam compositions and byproducts

Details Epsilon caprolactam compositions and byproducts Epsilon caprolactam compositions and byproducts

C - Chemistry, Metallurgy

07

D

C07D 201/02 (2006.01) C07D 201/08 (2006.01) C08G 69/02 (2006.01) C08G 69/14 (2006.01) C08G 69/36 (2006.01)

Patent

CA 2286071

This invention relates to a composition commprising (a) epsilon caprolactam and (b) one or more of 5-[4,5-di(3-carboxypropyl)-2-pyridyl]pentanoic acid or salt or amide, 4-[4,5-di(2-carboxypropyl)-2-pyridyl]-2-methylbutanoic acid or salt or amide, 2-[2-(2-carboxybutyl)-5-(1-carboxypropyl)-4-pyridyl]butanoic acid or salt or amide, 5-[3,5-di(3-carboxypropyl)-2-pyridyl]pentanoic acid or salt or amide, 4-[3,5-di(2-carboxypropyl)-2-pyridyl]-2-methylbutanoic acid or salt or amide, 2-[2-(2-carboxybutyl)-5-(1-carboxypropyl)-3-pyridyl]butanoic acid or salt or amide, 5-amino-4-methylpentanamide, 4-amino-3-ethylbutanamide, 5-[4,5-di(4-hydroxybutyl)-2-pyridyl]pentanol, 4-[4,5-di(2-methoxypropyl)-2- pyridyl]-2-methylbutanol, 2-[2-(2-methoxybutyl)-5-(1-methoxypropyl)-4- pyridyl]butanol, 5-[3,5-di(4-hydroxybutyl)-2-pyridyl]pentanol, 4-[3,5-di(2- methoxypropyl)-2-pyridyl]-2-methylbutanol, 2[2-(2-methoxybutyl)-5-(1- methoxypropyl)-3-pyridyl]butanol, 5-amino-4-methyl-1-pentanol, 5-imino-2- methyl-1-pentanamine, 5-amino-2-methyl-1-pentanol, 5-imino-4-methyl-1- pentanamine and 2-butyl-4,5-dipropylpyridine, wherein the weight ratio of component a) to component b) is at least about 99 to 1. The epsilon caprolactam compositions are useful in the preparation of nylon 6.

Cette invention se rapporte à une composition comprenant: (a) de l'epsilon-caprolactame; et (b) un ou plusieurs des composés suivants: l'acide 5-[4,5-di(3-carboxypropyle)-2-pyridyle]pentanoïque ou son sel ou amide, l'acide 4-[4,5-di(2-carboxypropyle)-2-pyridyle]-2-méthylbutanoïque ou son sel ou amine, l'acide 2-[2-(2-carboxybutyle)-5-(1-carboxypropyle)-4-pyridyle]butanoïque ou son sel ou amide, l'acide 5-[3,5-di(3-carboxypropyle)-2-pyridyle]pentanoïque ou son sel ou amide, l'acide 4-[3,5-di(2-carboxypropyle)-2-pyridyle]-2-méthylbutanoïque ou son sel ou amide, l'acide 2-[2-(2-carboxybutyle)-5-(1-carboxypropyle)-3-pyridyle]butanoïque ou son sel ou amide, le 5-amino-méthylpentanamide, le 4-amino-3-éthylbutanamide, le 5-[4,5-di(4-hydroxybutyle)-2-pyridyle]pentanol, le 4-[4,5-di(2-métroxypopyle)-2-pyridyle]-2-méthylbutanol, le 2-[2-(2-méthoxybutyle)-5-(1-méthoxypropyle)-4-pyridyle]butanol, le 5-[3,5-di(4-hydroxybutyle)-2-pyridyle]pentanol, le 4-[3,5-di(2-méthoxypropyle)-2-pyridyle]-2-méthylbutanol, le 2-[2-(2-méthoxybutyle)-5-(1-métoxypropyle)-3-pyridyle]butanol, le 5-amino-4-méthyle-1-pentanol, la 5-imino-2-méthyle-1-pentanamine, le 5-amino-2-méthyle-1-pentanol, la 5-imino-4-méthyle-1-pentanamine et la 2-butyle-4,5-dipropylpyridine, le rapport en poids entre le constituant (a) et le constituant (b) étant compris au moins entre environ 99 et 1. Ces compositions à base d'epsilon-caprolactame sont utiles dans la préparation du nylon 6.

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