公开(公告)号：US3597330A

公开(公告)日：1971-08-03

申请号：US3597330D

申请日：1968-04-24

Applicant: BASF AG

Inventor： WEGERICH ANTON ,  GROSSKINSKY OTTO-ALFRED ,  WINDERL SIEGFRIED ,  BLUM GERHARD

IPC: C07C51/44 ,  C07C51/50 ,  C07D201/16 ,  B01D3/34

CPC classification number: C07D201/16 ,  C07C51/44 ,  C07C51/50 ,  C07C55/14 ,  C07C55/12 ,  C07C55/10

Abstract: THE RECOVERY OF EPSILON CAPROLACTONE AND OF ALKANE DICARBOXYLIC ACIDS FROM MIXTURES SUCH AS ARE OBTAINED IN THE INDIVIDUAL WASHING STEPS OF THE PROCESS FOR OXIDATION OF CYCLOHEXANE WITH AIR AT ELEVATED TEMPERATURE AND AT SUPERATMOSPHERIC PRESSURE AND CONTAINING SUBSTANTIALLY MONOCARBOXYLIC ACIDS, DICARBOXYLIC ACIDS AND EPSILON-HYDROXYCAPROIC ACID (IF DESIRED AFTER PART OF THE ADIPIC ACID PRESENT HAS BEEN SEPARATED) BY REMOVING WATER (IF PRESENT) AND THE MAJOR PORTION OF THE MONOCARBOXYLIC ACIDS (IF PRESENT) BY DISTILLATION, ADDING 1 TO 30% BY WEIGHT OF PHOSPHORIC ACID OR A COMPOUND FORMING THE SAME OR BORIC ACID, HEATING THE MIXTURE OBTAINED UNDER SUBATMOSPHERIC COMPONENTS, CONDENSING THE INDIVIDUAL FRACTIONS AND RECTIFYING AND/OR CRYSTALLIZING THE FRACTIONS. DISTILLATION TEMPERATURES ABOVE 150*C. ARE AVOIDED. EPSILON CAPROLACTONE IS USEFUL FOR THE PRODUCTION OF CAPROLACTAM, A STARTING MATERIAL FOR THE PRODUCTION OF FIBERS.

公开(公告)号：US3485820A

公开(公告)日：1969-12-23

申请号：US3485820D

申请日：1966-08-15

Applicant: VICKERS ZIMMER AG

Inventor： HOFMANN HANSDIETER ,  CORSEPIUS HORST ,  KYBER MANFRED

IPC: C07D201/16 ,  C07D41/06

CPC classification number: C07D201/16

公开(公告)号：US3484434A

公开(公告)日：1969-12-16

申请号：US3484434D

申请日：1966-10-14

Applicant: PHILLIPS PETROLEUM CO

Inventor： NORELL JOHN R

IPC: C07D201/16 ,  C07D41/06

CPC classification number: C07D201/16

公开(公告)号：US3449216A

公开(公告)日：1969-06-10

申请号：US3449216D

申请日：1966-08-11

Applicant: ARTISAN IND

Inventor： BAIRD JAMES L

IPC: B01D1/26 ,  B01D3/14 ,  C07D201/16 ,  B01D3/10

CPC classification number: B01D1/26 ,  B01D3/148 ,  C07D201/16 ,  Y10S159/10 ,  Y10S203/18

公开(公告)号：US3406167A

公开(公告)日：1968-10-15

申请号：US50706065

申请日：1965-11-09

Applicant: ALLIED CHEM

Inventor： CHAO-SHING CHENG ,  HECKER RICHARD C ,  APOSTLE BASIL G ,  SNIDER ORVILL E

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US3404148A

公开(公告)日：1968-10-01

申请号：US52809766

申请日：1966-02-17

Applicant: STAMICARBON

Inventor： GARRITSEN JOHAN W

IPC: C07D201/04 ,  C07D201/16

CPC classification number: C07D201/16 ,  C07D201/04 ,  Y02P20/582

公开(公告)号：US3350392A

公开(公告)日：1967-10-31

申请号：US37357964

申请日：1964-06-08

Applicant: INVENTA AG

Inventor： HANS-JOACHIM SCHULTZE ,  CLAU BERTHER

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US3336298A

公开(公告)日：1967-08-15

申请号：US43691265

申请日：1965-03-03

Applicant: STAMICARBON

Inventor： DE ROOIJ ABRAHAM H

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US3245964A

公开(公告)日：1966-04-12

申请号：US23737762

申请日：1962-11-13

Applicant: ALLIED CHEM

Inventor： WIESNER ALBERT H ,  LE NOIR FRED W ,  APOSTLE BASIL G

IPC: C07D201/16 ,  C08G69/46

CPC classification number: C07D201/16 ,  C08G69/46

公开(公告)号：US3117964A

公开(公告)日：1964-01-14

申请号：US16428162

申请日：1962-01-04

Applicant: HALCON INTERNATIONAL INC

Inventor： LESTER NIRENBERG

IPC: C07D201/16

CPC classification number: C07D201/16