Purification of caprolactam from recycled nylon
Abstract
A method is disclosed of removing 1,11-diamino-6-undecanone from the pyrolysis product of nylon comprising: (a) pyrolyzing nylon-6 to form a pyrolyzate containing a caprolactam mixture; (b) dissolving the caprolactam mixture in a solvent to form a solution; (c) passing carbon dioxide gas through the solution to form a precipitate; (d) removing the precipitate from the solution; and (e) recovering the purified caprolactam from the solution. 3 figs.
- Inventors:
- Issue Date:
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 6439874
- Patent Number(s):
- 5919927
- Application Number:
- PPN: US 9-058403
- Assignee:
- Midwest Research Inst., Kansas City, MO (United States)
- DOE Contract Number:
- AC36-83CH10093
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 9 Apr 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; CHEMICAL INDUSTRY; MATERIALS RECOVERY; NYLON; PYROLYSIS; PYROLYSIS PRODUCTS; RECYCLING; CHEMICAL REACTIONS; DECOMPOSITION; INDUSTRY; MANAGEMENT; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYAMIDES; POLYMERS; PROCESSING; SYNTHETIC MATERIALS; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management
Citation Formats
Moens, L. Purification of caprolactam from recycled nylon. United States: N. p., 1999.
Web.
Moens, L. Purification of caprolactam from recycled nylon. United States.
Moens, L. Tue .
"Purification of caprolactam from recycled nylon". United States.
@article{osti_6439874,
title = {Purification of caprolactam from recycled nylon},
author = {Moens, L},
abstractNote = {A method is disclosed of removing 1,11-diamino-6-undecanone from the pyrolysis product of nylon comprising: (a) pyrolyzing nylon-6 to form a pyrolyzate containing a caprolactam mixture; (b) dissolving the caprolactam mixture in a solvent to form a solution; (c) passing carbon dioxide gas through the solution to form a precipitate; (d) removing the precipitate from the solution; and (e) recovering the purified caprolactam from the solution. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}
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