公开(公告)号：US3894916A

公开(公告)日：1975-07-15

申请号：US39282173

申请日：1973-08-29

Applicant: BASF AG

Inventor： FISCHER ROMAN ,  MAIER SIEGFRIED ,  KOERNIG WOLFGANG

IPC: C07C27/30 ,  B01J23/00 ,  C07B61/00 ,  C07C27/00 ,  C07C29/80 ,  C07C33/02 ,  C07C33/025 ,  C07C45/00 ,  C07C45/84 ,  C07C47/20 ,  C07C47/21 ,  C07C67/00 ,  B01D3/34

CPC classification number: C07C45/84 ,  C07C47/21

Abstract: A process for separating, by distillation, a mixture consisting essentially of 3,3-dimethylacrolein and 3-methyl-3-buten-1-ol, wherein the mixture to be separated is distilled in the presence of water and glycerol, the 3,3-dimethyl-acrolein first being distilled off azeotropically with water and the 3-methyl-3-buten1-ol then being separated, as an azeotropic mixture with water, from the higher-boiling glycerol. It is also possible to isolate the 3,3-dimethylacrolein by distillation if the 3-methyl-3-buten1-ol is partially replaced by 3-methyl-2-buten-1-ol. The 3,3dimethylacrolein, which can be isolated in pure form by the process of the invention, is a valuable intermediate for the synthesis of natural substances such as citral, vitamin A and chrysanthemic acid.

Abstract translation: 通过蒸馏分离基本上由3,3-二甲基丙烯醛和3-甲基-3-丁烯-1-醇组成的混合物的方法，其中待分离的混合物在水和甘油的存在下蒸馏， 首先与水共沸蒸馏出3-三甲基 - 丙烯醛，然后将3-甲基-3-丁烯-1-醇与较高沸点甘油作为与水的共沸混合物分离。 如果3-甲基-3-丁烯-1-醇部分被3-甲基-2-丁烯-1-醇代替，也可以通过蒸馏分离3,3-二甲基丙烯醛。 可以通过本发明的方法以纯形式分离的3,3-二甲基丙烯醛是合成天然物质如柠檬醛，维生素A和菊酸的有价值的中间体。

公开(公告)号：US3575780A

公开(公告)日：1971-04-20

申请号：US3575780D

申请日：1969-05-06

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG ,  UNTERSTENHOEFER LEO ,  MAIER SIEGFRIED ,  BERBNER HEINZ

IPC: E01C13/04 ,  E04F15/22 ,  B32B3/12 ,  A63J3/00 ,  B32B3/30

CPC classification number: E01C13/045 ,  E04F15/22 ,  Y10S273/04 ,  Y10T428/24174 ,  Y10T428/24562 ,  Y10T428/26 ,  Y10T428/30 ,  Y10T428/31678

Abstract: SPECIAL SURFACES FOR PLAYING FIELDS COMPRISING AN UPPER LAYER, A1, A MIDDLE LAYER A2 AND A LOWER LAYER A3, LAYERS A1 AND A3 CONSISTING OF A THERMOPLASTIC MOLDING MATERIAL HAVING A SPECIAL COMPOSITION. THE LAYERS A1 AND A3 ARE WEBS OR BOARDS HAVING PARALLEL RIBS ON ONE SIDE, AND THE LAYER A2 IS A STRIP OR SHEET OF STEEL OR PLASTICS MATERIAL. THE RIBS ON THE LAYERS A1 AND A3 ARE IN CONTACT WITH THE MIDDLE LAYER A2 AND ARRANGED IN SUCH A WAY THAT THEY ARE STAGGERED AT EQUAL DISTANCES IN REALTION TO EACH OTHER.

公开(公告)号：US3591446A

公开(公告)日：1971-07-06

申请号：US3591446D

申请日：1969-06-03

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG ,  UNTERSTENHOEFER LEO ,  MAIER SIEGFRIED ,  BERBNER HEINZ

IPC: E01C13/04 ,  E04F15/22 ,  B32B3/00

CPC classification number: E01C13/045 ,  E04F15/22 ,  Y10T428/24174 ,  Y10T428/24562 ,  Y10T428/26 ,  Y10T428/31815 ,  Y10T428/31931

Abstract: SPECIAL SURFACES FOR PLAYING FIELDS COMPRISING AN UPPER LAYER (A1) AND A LOWER (A2), EACH LAYER CONSISTING OF A THERMOPLASTIC MOLDING MATERIAL HAVING A SPECIAL COMPOSITION. THE LAYERS (A1) AND (A2) ARE WEBS OR BOARDS PROVIDED WITH APRALLEL RIBS ON ONE SIDE ONLY, LAYER (A1) BEING ARRANGED ON TOP OF LAYER (A2) IN SUCH A WAY THAT THE RIBBED SIDES ARE IN CONTACT, THE RIBS OF ONE LAYER BEING AT AN ANGLE OF FROM 45* TO 90 TO THOSE OF THE OTHER LAYER.