KR0138245B1 - 유기 불순물을 함유한 저순도 카프로락탐의 정제방법 - Google Patents
유기 불순물을 함유한 저순도 카프로락탐의 정제방법Info
- Publication number
- KR0138245B1 KR0138245B1 KR1019930032070A KR930032070A KR0138245B1 KR 0138245 B1 KR0138245 B1 KR 0138245B1 KR 1019930032070 A KR1019930032070 A KR 1019930032070A KR 930032070 A KR930032070 A KR 930032070A KR 0138245 B1 KR0138245 B1 KR 0138245B1
- Authority
- KR
- South Korea
- Prior art keywords
- lactam
- purity
- present
- low
- aqueous solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/12—Preparation of lactams by depolymerising polyamides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Abstract
Description
Claims (1)
- 폴리카프로이미드를 인산 촉매하에서 해중합시켜 수득한 회수락탐을 정제하는 방법에 있어서,(1) 저순도의 카프로락탐을 40 내지 80% 수용액으로 만들고,(2) 상기 수용액에 염기성 무기물을 첨가한 후,(3) 자외선 광원하에서 오존으로 산화처리하고,(4) 이를 활성탄탑에 통액시키고, 이어서(5) 이를 농축 증류시키는 것을 특징으로 하는 유기불순물을 함유한 저순도 카프로락탐의 정제방법.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930032070A KR0138245B1 (ko) | 1993-12-31 | 1993-12-31 | 유기 불순물을 함유한 저순도 카프로락탐의 정제방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930032070A KR0138245B1 (ko) | 1993-12-31 | 1993-12-31 | 유기 불순물을 함유한 저순도 카프로락탐의 정제방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950017951A KR950017951A (ko) | 1995-07-22 |
| KR0138245B1 true KR0138245B1 (ko) | 1998-05-15 |
Family
ID=19374997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019930032070A Expired - Fee Related KR0138245B1 (ko) | 1993-12-31 | 1993-12-31 | 유기 불순물을 함유한 저순도 카프로락탐의 정제방법 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0138245B1 (ko) |
-
1993
- 1993-12-31 KR KR1019930032070A patent/KR0138245B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR950017951A (ko) | 1995-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20020059811A (ko) | 염수를 재순환하여 폴리카보네이트를 제조하는 방법 및 장치 | |
| WO2000032303A1 (en) | A process for the recovery of iodine from aqueous solutions containing iodinated organic compounds | |
| JPH1171346A (ja) | N−メチル−2−ピロリドンの精製方法 | |
| KR0138245B1 (ko) | 유기 불순물을 함유한 저순도 카프로락탐의 정제방법 | |
| JP3104312B2 (ja) | アセトニトリルの精製方法 | |
| JP5734429B2 (ja) | ジシクロヘキシルジスルフィドの製造方法 | |
| EP1172331A1 (en) | Method for purification of phosphoric acid and high purity polyphosphoric acid | |
| US1401937A (en) | Purification of maleic acid by reducing agents | |
| US4153600A (en) | Process for the recovery of ε-caprolactam from a distillation residue containing ε-caprolactam | |
| US4704476A (en) | Working up reaction mixtures containing cyclohexyl hydro-peroxide, cyclohexanol and cyclohexanone | |
| KR102529310B1 (ko) | 니트릴계 용매의 정제 방법 | |
| EP0084285A2 (fr) | Procédé de traitement des eaux résiduaires contenant des amines aromatiques | |
| KR100311914B1 (ko) | 저순도카프로락탐의정제방법 | |
| KR0134874B1 (ko) | 저순도 카프로락탐내 유기불순물의 효율적인 제거방법 | |
| US3248388A (en) | 6alpha-fluoro-delta1, 4-pregnadien-16alpha, 17alpha, 21-triol-3, 20-diones and intermediates in the production thereof | |
| JPS5943945B2 (ja) | ε↓−カプロラクタムの精製方法 | |
| KR19980050084A (ko) | 저순도 카프로락탐의 정제방법 | |
| AT408755B (de) | Verfahren zur herstellung von l-asparaginsäure | |
| JP3794040B2 (ja) | 過酸化水素の精製法 | |
| JPH05140070A (ja) | アセトニトリルの精製方法 | |
| US3406167A (en) | Purification of caprolactam | |
| US3987071A (en) | Method for refining 11-cyano-undecanoic acid | |
| SU184830A1 (ru) | Способ получения адипиновой кислоты | |
| KR100316687B1 (ko) | 유기불순물을함유한저순도카프로락탐의정제방법 | |
| JPS63222009A (ja) | 精製リン酸中の溶解有機物の除去法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| A201 | Request for examination | ||
| PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
|
| PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
| GRNT | Written decision to grant | ||
| PR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-PR0701 |
|
| PR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-PR1002 Fee payment year number: 1 |
|
| PG1601 | Publication of registration |
St.27 status event code: A-4-4-Q10-Q13-nap-PG1601 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 4 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 7 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 8 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 9 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| FPAY | Annual fee payment |
Payment date: 20070102 Year of fee payment: 10 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 10 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| PC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-PC1903 Not in force date: 20080218 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
|
| PC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-PC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 20080218 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |