Epsilon caprolactam compositions

US5925754A · kind A · utility

Assignee

• Union Carbide Chemicals & Plastics Technology LLC · US

Inventors

• John Michael Maher · Charleston, US
• David R. Bryant · South Charleston, US
• Johnathan E. Holladay · Kennewick, US
• Thomas C. Eisenschmid · Cross Lanes, US
• John R. Briggs · Charleston, US
• Kurt D. Olson · Cross Lanes, US

Key dates

• Filing date: Oct 23, 1997
• Grant date: Jul 20, 1999
• Expiry date: Oct 23, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a composition comprising (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 comp…