-
1.发明专利Separation of methanol from mixture of methylmethacrylate and methanol water 失效甲醇从甲基丙烯酸甲酯和甲醇水的混合物中分离甲醇
公开(公告)号：JPS58180457A
公开(公告)日：1983-10-21
申请号：JP5284483
申请日：1983-03-30
Applicant: Basf Ag
-
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：JPS58188831A
公开(公告)日：1983-11-04
申请号：JP6381783
申请日：1983-04-13
Applicant: Basf Ag
-
Patent Agency Ranking
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
-
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：JPH0454652B2
公开(公告)日：1992-08-31
申请号：JP6381783
申请日：1983-04-13
Applicant: BASF AG
-
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：JPS61212531A
公开(公告)日：1986-09-20
申请号：JP4876186
申请日：1986-03-07
Applicant: BASF AG
Inventor： PEETAA BASURAA , GERUTO DEYUMUGEN , GERUTO FUOUKIYUUTO , RIHIARUTO KURABETSUTSU , FURANTSU MERUGAA , FURIIDOBERUTO NEESU , HERUBERUTO FUOOGEN
IPC: C07C51/00 , C07C51/25 , C07C57/055 , C07C67/00
-
-
-
-
-
-
-
Search Results
8
records
(took 0.036 seconds)
