公开(公告)号：US3849444A

公开(公告)日：1974-11-19

申请号：US13992271

申请日：1971-05-03

Applicant: BASF AG

Inventor： FUCHS H ,  RICKER E ,  SCHMIDT F ,  SCHWARTZ E ,  SPERBER H

IPC: C07D17/00

Abstract: 1. IN A PROCESS FOR THE PRODUCTION OF 1,4-BUTANEDIOLFORMAL WHEREIN A MIXTURE OF BUTANEDIOL-1,4M AN AQUEOUS SOLUTION OF FORMALDEHYDE OT A SUBSTANCE YIELDING FORALDEHYDE, AND AN ACID OR ACID SALT IS HEATED IN A REACTION VESSEL, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY (A) HEATING AT THE BOIL A CONSTANT AMOUNT OF SAID REACTION MIXTURE WHICH CONTAINS LESS THAN 1% BY WEIGHT OF A STRONG ACID OR LESS THAN 10% BY WEIGHT OF AN ACID SALT OR A WEAK ACID, (B) EVAPORATING THE PRODUCT OF THE SYNTHESIS FROM THE REACTION MIXTURE AT SUCH A VELOCITY THAT A MEAN RESIDUE TIME IN THE REACTION VESSEL OF LESS THAN 240 MINUTES IS SET UP FOR A REACTION MIXTURE, (C) CONDENSING THE VAPORS OF THE PRODUCT OF THE SYNTHESIS, (D) SEPARATING THE TWO LAYERS WHICH FORM IN A LIQUID CONDENSATE, (E) SUBJECTING THE UPPER LAYER TO TREATMENT WITH ALKALI, PASSING SAID LAYER THROUGH AN EVAPORATOR AND THEREAFTER FRACTIONALLY DISTILLING SAID TREATED LAYER, AND (F) SUBJECTING THE LOWER LAYER TO AZEOTROPIC DISTILLATION AND RECYCLING THE THE DISTILLATE TO THE UNCONDENSED PRODUCT STREAM WHICH LEAVES THE REACTION VESSEL.

公开(公告)号：US3852361A

公开(公告)日：1974-12-03

申请号：US4844470

申请日：1970-06-22

Applicant: BASF AG

Inventor： HAAS H ,  SPERBER H ,  FRIEDRICHSEN W

IPC: B01J23/881 ,  C07C45/38 ,  C07C45/16

CPC classification number: B01J23/881 ,  B01J2523/00 ,  C07C45/38 ,  C07C47/04 ,  B01J2523/51 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/41

Abstract: The production of formaldehyde by oxidation of methanol in the presence of a catalyst in the form of oxides of iron and of molybdenum on a silicate carrier. The formaldehyde which can be prepared according to the process of the invention is a disinfectant, tanning material, reducing agent and valuable starting material for the production of synthetic resins, adhesives, plastics and auxiliaries for many industrial fields.

Abstract translation: 在硅酸盐载体上以铁和钼的氧化物形式存在的催化剂存在下甲醇氧化制备甲醛。 根据本发明方法制备的甲醛是用于生产用于许多工业领域的合成树脂，粘合剂，塑料和助剂的消毒剂，鞣制材料，还原剂和有价值的原料。

公开(公告)号：US3836605A

公开(公告)日：1974-09-17

申请号：US33915973

申请日：1973-03-08

Applicant: BASF AG

Inventor： RICKER E ,  WILHELM H ,  SCHWARTZ E ,  SPERBER H ,  SANDER B ,  SCHMIDT F

IPC: C08G12/04 ,  C08G12/34 ,  C08L59/02 ,  C08L61/20 ,  C08G37/32 ,  C08G51/58

CPC classification number: C08G12/34 ,  C08G12/046 ,  C08K5/005 ,  C08L59/02 ,  C08L61/20

Abstract: A PROCESS FOR THE PRODUCTION OF POLYCONDENSATES BY POLYCONDENSING IN AQUEOUS ACID MEDIUM (A) DIAMIDES OF DICARBOXYLIC ACIDS HAVING AT LAST FOUR CARBON ATOMS, (B) N,N''-SUBSTITUTED UREAS AND (C) FORMALDEHYDE, PRODUCTS OBTAINED IN THIS WAY AND A STABILIZIED MOLDABLE ADMIXTURE OF SAID POLYCONDENSATES WITH OXYMETHYLENE POLYMERS.