公开(公告)号：US3758498A

公开(公告)日：1973-09-11

申请号：US3758498D

申请日：1971-03-22

Applicant: HOECHST AG

Inventor： PFULLER P ,  KUHN W

IPC: C07D207/44 ,  C07D207/448 ,  C08F22/36 ,  C23F11/14 ,  C07D27/18

CPC classification number: C07D207/448 ,  C07D207/44 ,  C08F22/36 ,  C23F11/145

Abstract: PREPARATION OF N-SUBSTITUTED MALEIMIDES BY HEATING THE CORRESPONDING N-SUBSTITUTED MALEAMIC ACIDS OR MONO-AMMONIUM MALEIC ACID SALTS IN THE PRESENCE OF STREAM TO A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 100* TO 400*C.

公开(公告)号：AU506412B2

公开(公告)日：1980-01-03

申请号：AU2697477

申请日：1977-07-13

Applicant: HOECHST AG

Inventor： NEUNTEUFEL R A ,  PFULLER P

IPC: C01F17/00 ,  C01G3/00 ,  C01G5/00 ,  C01G15/00 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C07C45/76 ,  C07C45/77 ,  C07C49/76 ,  C07C49/794 ,  C07C49/80 ,  C07C49/92 ,  C22B3/26 ,  C07C45/00 ,  B01D11/04 ,  C09K3/00

Abstract: A compsn. comprises a mixt. of at least 3 different diketones of the formula:- In (I) R1 is methyl or 2-6C alkyl or alkenyl; R2, R3 and R4 are H, methyl or 2-3C alkyl or alkenyl; Y represents identical or different substituents chosen from H, Cl and F; pref. H; the sum of the C atoms(n) of R1 R2 R3 and R4 can amt. to 6 for each cpd. but the fraction in which n is 2-4 comprises at least 60%, pref. at least 70% of the mixture. The mixture is used, optionally in an inert water-insoluble solvent, to extract metals from aq. soln; the organic extract sepd is heated with acids to recore the metal. Metals extracted are Cu, Co, Ni, Fe, Ag, Be, Ga, Eu, In, Zn. The use of the mixture improves the solubility of the cpds. in organic solvents and gives a greater extraction capacity.

公开(公告)号：SE7613945L

公开(公告)日：1977-06-12

申请号：SE7613945

申请日：1976-12-10

Applicant: HOECHST AG

Inventor： FENCHEL D ,  SCHMIDT W ,  PFULLER P

IPC: C22B43/00 ,  C02F1/26 ,  C25B1/36

公开(公告)号：SE412926B

公开(公告)日：1980-03-24

申请号：SE7613945

申请日：1976-12-10

Applicant: HOECHST AG

Inventor： FENCHEL D ,  SCHMIDT W ,  PFULLER P

IPC: C22B43/00 ,  C02F1/26 ,  C25B1/36 ,  C02C5/02

公开(公告)号：BR7704602A

公开(公告)日：1978-04-25

申请号：BR7704602

申请日：1977-07-13

Applicant: HOECHST AG

Inventor： NEUNTEUFEL R ,  PFULLER P

IPC: C01F17/00 ,  C01G3/00 ,  C01G5/00 ,  C01G15/00 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C07C45/76 ,  C07C45/77 ,  C07C49/76 ,  C07C49/794 ,  C07C49/80 ,  C07C49/92 ,  C22B3/26 ,  C22B15/00

Abstract: A compsn. comprises a mixt. of at least 3 different diketones of the formula:- In (I) R1 is methyl or 2-6C alkyl or alkenyl; R2, R3 and R4 are H, methyl or 2-3C alkyl or alkenyl; Y represents identical or different substituents chosen from H, Cl and F; pref. H; the sum of the C atoms(n) of R1 R2 R3 and R4 can amt. to 6 for each cpd. but the fraction in which n is 2-4 comprises at least 60%, pref. at least 70% of the mixture. The mixture is used, optionally in an inert water-insoluble solvent, to extract metals from aq. soln; the organic extract sepd is heated with acids to recore the metal. Metals extracted are Cu, Co, Ni, Fe, Ag, Be, Ga, Eu, In, Zn. The use of the mixture improves the solubility of the cpds. in organic solvents and gives a greater extraction capacity.

公开(公告)号：SE7613945A

公开(公告)日：1977-06-12

申请号：SE7613945

申请日：1976-12-10

Applicant: HOECHST AG

Inventor： FENCHEL D ,  SCHMIDT W ,  PFULLER P

IPC: C22B43/00 ,  C02F1/26 ,  C25B1/36

CPC classification number: C02F1/26