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Caprolactam epsilon

Dissolution/reprecipitation processes were evaluated for the recycling of poly-epsilon-caprolactam (PA6) and polyhexamethyleneadipamide (PA66). The process involved solution of the polyamide in an appropriate solvent, precipitation by the addition of a non-solvent, and recovery of the polymer by washing and drying. Dimethylsulphoxide was used as the solvent for PA6, and formic acid for PA66, and methylethylketone was used as the non-solvent for both polymers. The recycled polymers were evaluated by determination of molecular weight, crystallinity and grain size. Excellent recoveries were achieved, with no deterioration in the polymer properties. 33 refs. [Pg.43]

Patent Number US 5556890 A 19960917 RECLAIMING EPSILON-CAPROLACTAM FROM CARPET WASTE... [Pg.69]

The present invention is for a method of preparing purified epsilon-caprolaetam from earpet waste containing nylon-6. Contaminated epsilon-eaprolaetam is obtained by depolymerising nylon-6 from earpet waste. A mixture of the contaminated epsilon-eaprolaetam and water is then hydrogenated in the presenee of hydrogen and a hydrogenation catalyst in order to produce purified epsilon-caprolactam. The amount of contaminated epsilon-caprolactam in the mixture ean be between 10 and 95% by weight. [Pg.69]

Epsilon-caprolactam from epsilon-caprolactam, 4-ethyl-2-pyrrolidinone, 5-methyl-2-piperdinone, 3-ethyl-2-pyrrolidinone, 3-methyl-2-piperdinone Silicalite-1 Methanol, acetonitrile [197,198[... [Pg.186]

Fang, X., Hutcheon, R. and Scola, D.A., Microwave syntheses of poly(epsilon-caprolactam-co-epsilon-caprolactone), /. Polym. Sci., Part A Polym. Chem., 2000, 38,1379. [Pg.170]

Others 1,4-dioxane, 1,3,5-trioxane, terahydrofuran, 2-butyl tetrahydrofuran, N,N-dimethylformamide, N,N-dimethylacetamide, epsilon-caprolactam, benzothiazole, biphenyl, pyrazine, 2-butanone oxime, l-methyl-2-pyrrolidone, N,N-dimethyl-aniline, N,N-dimethyl-p-toluidine, l-methyl-7-isopropyl phenanthrene, dibenzyl-amine, hexamethylenetetramine, squalene, 2-ethylanthraquinone... [Pg.408]

C6H11NO epsilon-caprolactam 105-60-2 9.340E+09 70.930 9202 C6H15N di-propylamine 142-84-7 1.063E+10 76.340... [Pg.653]

C6H11NO epsilon-caprolactam 105-60-2 3.761 9247 C6H15N3 N-aminoethyl piperazine 140-31-8 4.225... [Pg.665]

C6H4CIN02 p-chloronitrobenzene 100-00-5 gas 2,830 1 8101 C6H11NO epsilon-caprolactam 105-60-2 in benzene 0.387 1... [Pg.676]

B-H in the above equation is a "blocking" agent, that is, a labile active hydrogen-containing compound, which includes phenol, nitrophenol, and epsilon-caprolactam. [Pg.21]

Other special aliphatic imide forming compounds claimed in patents, like 2-oxazolidone [85] or epsilon-caprolactame, lead to polymers having aliphatic chains. These chains are responsible for the lower Tg of the cured films in comparison with the polymers having aromatic diamines. No commercial polyfes-ter-imide) wire enamel in western Europe contains them. [Pg.55]

Another imide modified unsaturated polyester is obtained when trimellitic anhydride is reacted with epsilon-caprolactam, followed by esterification with THEIC, neopentyl glycol, and maleic anhydride. The product is claimed for coating motor windings [215]. [Pg.71]

Synonyms/Trade Names Aminocaproic lactam, epsilon-Caprolactam, Hexahydro-2H-azepin-2-one, 2-Oxohexamethyleneimine ... [Pg.50]

E. Konig, B. Baumbach, and C. Fiissel. Polyiscrcyanates blocked with epsilon-caprolactam and either diisopropylamine or 1,2,4-triazole, their preparation and use. US Patent 6723817, assigned to Bayer AktiengeseUschaft (Leverkusen, DE), April 20, 2004. [Pg.326]

COMPLEX THERMOPHYSICAL PROPERTIES OF EPSILON-CAPROLACTAM AND POLY-EPSILON-CAPROLACTAM. [Pg.141]

PHYSICOCHEMICAL ANALYSIS OF A SULFURIC ACID-EPSILON-CAPROLACTAM SYSTEM. [Pg.178]

ACID-EPSILON-CAPROLACTAM. //ENGLISH TRANSLATION OF ZH. PRIKL KHIM. 40 /8/ 1859-62,1967.//... [Pg.222]

No.9, 1997,p.2067-75 STUDY OF THE CONFORMATIONS OF POLY(EPSILON-CAPROLACTAM) AND POLY(EPSILON-CAPROLACTAM)-POLYBUTADIENE BLOCK COPOLYMERS BY FTIR SPECTROSCOPY WITH PHOTOACOUSTIC DETECTION AND BY MICRO-RAMAN CONFOCAL SPECTROSCOPY Schmidt P Fernandez M R Pastor J M Roda J Czech Republic,Academy of Sciences ... [Pg.88]

FTIR spectroscopy with photoacoustic detection and micro-Raman confocal spectroscopy were used to study the conformations of poIy(epsilon caprolactam) and poly(epsilon-caprolactam)-polybutadiene block copolymers. In the block copolymers prepared by anionic polymerisation, the fraction of the planar conformation of poly(epsilon-caprolactam) chains decreased with increasing polybutadiene content. In the surface layers formed by rapid saw cutting and in the islands formed by microtome cutting, the content of the planar conformation was lowered. This was substantially increased by water treatment, especially at elevated temperatures. 15 refs. [Pg.88]

See other pages where Caprolactam epsilon is mentioned: [Pg.94]    [Pg.140]    [Pg.32]    [Pg.1332]    [Pg.24]    [Pg.128]    [Pg.224]    [Pg.331]    [Pg.442]    [Pg.562]    [Pg.608]    [Pg.708]    [Pg.120]    [Pg.396]    [Pg.384]    [Pg.390]    [Pg.396]    [Pg.385]    [Pg.389]    [Pg.170]    [Pg.382]    [Pg.389]    [Pg.393]    [Pg.35]    [Pg.58]    [Pg.22]   


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