公开(公告)号：JPS588114A

公开(公告)日：1983-01-18

申请号：JP9763881

申请日：1981-06-25

Applicant: SNIA VISCOSA

Inventor： TOMASO BENAI ,  UUGO PAORETSUCHI ,  NOBEERO REONSHIINI

IPC: D01F2/06

公开(公告)号：JPS5782365A

公开(公告)日：1982-05-22

申请号：JP15370880

申请日：1980-10-31

Applicant: Snia Viscosa

Inventor： PAORO SENNI ,  MARIO KATONI ,  DOMENIKO ASUTARIITA

IPC: C07D201/16

公开(公告)号：JPS5725413A

公开(公告)日：1982-02-10

申请号：JP5687181

申请日：1981-04-15

Applicant: Snia Viscosa

Inventor： JIYORUJIYO KATSUTSUARO ,  ANTONIO KABUARURARO ,  ANTONIO SARAN ,  ARUDO TENPESUTEI

IPC: D01F6/60 ,  D01F6/90

公开(公告)号：JPS5692933A

公开(公告)日：1981-07-28

申请号：JP16274580

申请日：1980-11-20

Applicant: SNIA VISCOSA

Inventor： JIYANKARURO KARINIYAANI ,  ARUDO KIPURIAANI

IPC: B29C45/00 ,  B29C59/00 ,  B29C67/20 ,  C08G63/91 ,  C08J9/30

公开(公告)号：JPS55149249A

公开(公告)日：1980-11-20

申请号：JP5937880

申请日：1980-05-02

Applicant: SNIA VISCOSA

Inventor： PAORO SENNI ,  DOMENIKO ASUTARITA

IPC: C07D201/16

Abstract: A method for purifying raw caprolactam containing, as impurities, primary amides of the formula (I) R being a hydrocarbon radical having 1-14 carbon atoms, and other by-products is described. The operations, carried out in the following order, consist in (a) treating a solution of raw caprolactam in a water insoluble organic solvent with water to extract most of the caprolactam in purified form, (b) separating the aqueous caprolactam solution and isolating the caprolactam, (c) treating the remaining organic solution with mineral acid to cause the formation of two phases, (d) separating these phases into a heavy phase containing the mineral acid, dilution water and most of the amides and by-products and a light phase containing the organic solvent and any residual amides and by-products, and (e) preferably recycling the light phase to (a). Further object of the invention is the purified caprolactam thus obtained.

公开(公告)号：JPS55112223A

公开(公告)日：1980-08-29

申请号：JP17389479

申请日：1979-12-27

Applicant: SNIA VISCOSA

Inventor： JIOBANNI KORURADO ,  ERUBIO BERUTOTSUCHI ,  BURUUNO SOPINO

IPC: C08G63/00 ,  C08F2/44 ,  C08F299/04 ,  C08G20060101 ,  C08G63/52 ,  C08J5/00

公开(公告)号：JPS5589241A

公开(公告)日：1980-07-05

申请号：JP14595979

申请日：1979-11-10

Applicant: SNIA VISCOSA

Inventor： RANSESUKO SHIKURAARI ,  PIEERU PAORO ROTSUCHI ,  RUIGI KANABESHI

IPC: C07C55/02 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C67/00

公开(公告)号：JPS5512889A

公开(公告)日：1980-01-29

申请号：JP6900579

申请日：1979-06-04

Applicant: SNIA VISCOSA

Inventor： FURANSESUKO MANKA

IPC: D06M15/53 ,  C08G73/06 ,  D06M13/02 ,  D06M13/184 ,  D06M13/188 ,  D06M13/203 ,  D06M13/224 ,  D06M13/244 ,  D06M13/282 ,  D06M13/292 ,  D06M101/00 ,  D06M101/02 ,  D06M101/06 ,  D06M101/08

公开(公告)号：JPS51107398A

公开(公告)日：1976-09-22

申请号：JP1608576

申请日：1976-02-18

Applicant: SNIA VISCOSA

Inventor： JIOBANNI KOORAADO

IPC: C08G69/00 ,  C08F290/00 ,  C08F299/00 ,  C08G69/44 ,  H05K1/03

公开(公告)号：JPS5844651B2

公开(公告)日：1983-10-04

申请号：JP7973074

申请日：1974-07-11

Applicant: SNIA VISCOSA

Inventor： FURANSHISUKO SHIKURARI ,  PIETORO BAORO ROSHII

IPC: C08G69/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/34 ,  C07C51/367 ,  C07C59/147 ,  C07C59/74 ,  C07C67/00 ,  C07C227/00 ,  C07C227/06 ,  C07C227/08 ,  C07C227/16 ,  C07C229/08 ,  C07C229/30 ,  C07D323/02 ,  C08G63/06 ,  C08G69/08 ,  C08G69/14