公开(公告)号：JP2574406B2

公开(公告)日：1997-01-22

申请号：JP15702288

申请日：1988-06-27

Applicant: BASF AG

Inventor： RIHIARUTO KURABETSUTSU ,  GERUTO DEYUMUGEN ,  FURANTSU MERUGAA ,  MIHAERU IEEGAA ,  FURITSUTSU CHIISEN ,  HERUBERUTO FUOOGERU

IPC: B01J27/19 ,  C07B63/04 ,  C07C51/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C67/00

Abstract: Methacrylic acid can be prepared with advantage by gas phase oxidation of methacrolein or isobutyraldehyde over Mo- and P-containing catalysts at from 250 DEG to 400 DEG C. with cooling of the hot reaction gas to below 100 DEG C., absorption of the methacrylic acid in a water-operated absorption column, at below 100 DEG C. and partial recycling into the oxidation reactor after admixture of methacrolein or isobutyraldehyde and oxygen by feeding a quantity of methacrolein or isobutyraldehyde equal to the quantity of methacrolein or isobutyraldehyde consumed in the reaction in liquid form together with a polymerization inhibitor into the reactor gas in the lower two-thirds of the absorber column and upstream of the feed point for the fresh methacrolein or isobutyraldehyde or down-stream of the absorption column splitting off the reactor off-gas a side stream which is washed in a wash column operated with water at

公开(公告)号：JPS5136415A

公开(公告)日：1976-03-27

申请号：JP9263775

申请日：1975-07-31

Applicant: BASF AG

Inventor： HAINTSU ENGERUBATSUHA ,  RIHIARUTO KURABETSUTSU ,  GERUTO DEYUMUPUGEN ,  KAARU HAINTSU BIRAAJIN ,  URURITSUHI REEBERUTO ,  FURITSUTSU CHIISEN

IPC: C07C57/05 ,  C07C45/35 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

公开(公告)号：JPS6429339A

公开(公告)日：1989-01-31

申请号：JP15702288

申请日：1988-06-27

Applicant: BASF AG

Inventor： RIHIARUTO KURABETSUTSU ,  GERUTO DEYUMUGEN ,  FURANTSU MERUGAA ,  MIHAERU IEEGAA ,  FURITSUTSU CHIISEN ,  HERUBERUTO FUOOGERU

IPC: B01J27/19 ,  C07B63/04 ,  C07C51/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C67/00

Abstract: Methacrylic acid can be prepared with advantage by gas phase oxidation of methacrolein or isobutyraldehyde over Mo- and P-containing catalysts at from 250 DEG to 400 DEG C. with cooling of the hot reaction gas to below 100 DEG C., absorption of the methacrylic acid in a water-operated absorption column, at below 100 DEG C. and partial recycling into the oxidation reactor after admixture of methacrolein or isobutyraldehyde and oxygen by feeding a quantity of methacrolein or isobutyraldehyde equal to the quantity of methacrolein or isobutyraldehyde consumed in the reaction in liquid form together with a polymerization inhibitor into the reactor gas in the lower two-thirds of the absorber column and upstream of the feed point for the fresh methacrolein or isobutyraldehyde or down-stream of the absorption column splitting off the reactor off-gas a side stream which is washed in a wash column operated with water at

公开(公告)号：JPS598178B2

公开(公告)日：1984-02-23

申请号：JP6951877

申请日：1977-06-14

Applicant: Basf Ag

Inventor： RIHIARUTO KURABEETSU ,  WARUTAA HERUMAN ,  NORUBERUTO SHORUTSU ,  HAINTSU ENGERUBATSUHA ,  GERUTO YURUGEN ENGERUTO ,  KAARU HAINTSU UIRAAJIN ,  GERUTO DEYUMUPUGEN ,  FURITSUTSU CHIISEN

IPC: B01J23/00 ,  B01J23/24 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/34 ,  B01J23/88 ,  B01J23/89 ,  B01J37/02 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

CPC classification number: B01J23/887 ,  B01J23/002 ,  B01J23/24 ,  B01J23/34 ,  B01J37/0221 ,  B01J37/0236 ,  B01J2523/00 ,  C07C51/252 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/72 ,  B01J2523/43 ,  B01J2523/67 ,  B01J2523/33 ,  B01J2523/41 ,  B01J2523/51 ,  B01J2523/54 ,  B01J2523/842 ,  B01J2523/847

公开(公告)号：JPS61259762A

公开(公告)日：1986-11-18

申请号：JP10507186

申请日：1986-05-09

Applicant: BASF AG

Inventor： GERUTO DEYUMUGEN ,  RIHIARUTO KURABETSUTSU ,  FURANTSU MERUGAA ,  MATSUCHIASU SHIYUBUARUTSUMAN ,  FURITSUTSU CHIISEN ,  HERUBERUTO FUOOGERU

IPC: B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

公开(公告)号：JPS52153889A

公开(公告)日：1977-12-21

申请号：JP6951877

申请日：1977-06-14

Applicant: BASF AG

Inventor： RIHIARUTO KURABEETSU ,  WARUTAA HERUMAN ,  NORUBERUTO SHIYORUTSU ,  HAINTSU ENGERUBATSUHA ,  GERUTO YURUGEN ENGERUTO ,  KAARU HAINTSU UIRAAJIN ,  GERUTO DEYUMUPUGEN ,  FURITSUTSU CHIISEN

IPC: B01J23/00 ,  B01J23/24 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/34 ,  B01J23/88 ,  B01J23/89 ,  B01J37/02 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

公开(公告)号：JPS5820944B2

公开(公告)日：1983-04-26

申请号：JP17817980

申请日：1980-12-18

Applicant: BASF AG

Inventor： HAINTSU ENGERUBATSUHA ,  RIHIARUTO KURABETSUTSU ,  GERUTO DEYUMUPUGEN ,  KAARUUHAINTSU UIRAAJIN ,  URURITSUHI REEBERUTO ,  FURITSUTSU CHIISEN ,  PEETAA RUTSUKU

IPC: C07C27/14 ,  B01J21/00 ,  B01J23/00 ,  B01J23/88 ,  B01J23/89 ,  B01J27/186 ,  B01J27/192 ,  B01J27/195 ,  C07B61/00 ,  C07C27/00 ,  C07C45/00 ,  C07C45/34 ,  C07C45/35 ,  C07C47/22 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08

公开(公告)号：JPS5695144A

公开(公告)日：1981-08-01

申请号：JP17817980

申请日：1980-12-18

Applicant: BASF AG

Inventor： HAINTSU ENGERUBATSUHA ,  RIHIARUTO KURABETSUTSU ,  GERUTO DEYUMUPUGEN ,  KAARUUHAINTSU UIRAAJIN ,  URURITSUHI REEBERUTO ,  FURITSUTSU CHIISEN ,  PEETAA RUTSUKU

IPC: C07C27/14 ,  B01J21/00 ,  B01J23/00 ,  B01J23/88 ,  B01J23/89 ,  B01J27/186 ,  B01J27/192 ,  B01J27/195 ,  C07B61/00 ,  C07C27/00 ,  C07C45/00 ,  C07C45/34 ,  C07C45/35 ,  C07C47/22 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08

公开(公告)号：JPS52118419A

公开(公告)日：1977-10-04

申请号：JP3341377

申请日：1977-03-28

Applicant: BASF AG

Inventor： GERUTO DEYUMUGEN ,  HAINTSU ENGERUBATSUHA ,  GERUTO YURUGEN ENGERUTO ,  RIHIARUTO KURABETSUTSU ,  HORUSUTO SHIYAUERU ,  FURITSUTSU CHIISEN ,  KAARU HAINTSU UIRAAJIN

IPC: B01J27/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/05 ,  C07C67/00