公开(公告)号：NO972216A

公开(公告)日：1997-07-07

申请号：NO972216

申请日：1997-05-14

Applicant: DEGUSSA

Inventor： WERLE PETER ,  HELMLING OSWALD ,  JAKOB HARALD ,  TRAGESER MARTIN

IPC: A01N35/02 ,  A01N43/28 ,  C07C43/303 ,  C07C45/51 ,  C07C45/59 ,  C02F1/50

CPC classification number: C07C45/513 ,  A01N35/02 ,  A01N43/28 ,  C07C43/303 ,  C07C45/59 ,  A01N2300/00 ,  C07C47/22

公开(公告)号：NO972216D0

公开(公告)日：1997-05-14

申请号：NO972216

申请日：1997-05-14

Applicant: DEGUSSA

Inventor： WERLE PETER ,  HELMLING OSWALD ,  JAKOB HARALD ,  TRAGESER MARTIN

IPC: A01N35/02 ,  A01N43/28 ,  C07C43/303 ,  C07C45/51 ,  C07C45/59

公开(公告)号：AU3868495A

公开(公告)日：1996-06-17

申请号：AU3868495

申请日：1995-10-23

Applicant: DEGUSSA

Inventor： WERLE PETER ,  HELMLING OSWALD ,  JAKOB HARALD ,  TRAGESER MARTIN

IPC: A01N35/02 ,  A01N43/28 ,  C07C43/303 ,  C07C45/51 ,  C07C45/59 ,  C02F1/50

公开(公告)号：NO950512A

公开(公告)日：1995-08-14

申请号：NO950512

申请日：1995-02-10

Applicant: DEGUSSA

Inventor： WERLE PETER ,  HOPP MATHIAS ,  HELMLING OSWALD ,  ARNTZ DIETRICH

IPC: A01N35/02 ,  C08F16/34 ,  C08F116/34

CPC classification number: C08F116/34 ,  A01N35/02

公开(公告)号：CA2129606A1

公开(公告)日：1995-02-08

申请号：CA2129606

申请日：1994-08-05

Applicant: DEGUSSA

Inventor： WERLE PETER ,  GEISSLER BERND ,  TRAGESER MARTIN

IPC: B01J19/18 ,  B01J19/24 ,  C02F1/50 ,  C02F1/68 ,  A01N31/02

Abstract: Stretches of flowing water are doped with acrolein for the purpose of preventing excessive growth of plants and algae. In order to avoid transport of acrolein, by means of the method according to the invention using the device according to the invention, acrolein is produced at the site where it is required by deacetalation of an acrolein acetal in the presence of an aqueous mineral acid, for which no electrical energy is necessary. According to the invention, an acrolein acetal and an aqueous mineral acid solution are delivered from compression-proof storage tanks into a mixing chamber by the application of pressure from a pressure cylinder and the mixture is passed through a deacetalation reactor; the reactor to be used comprises a tubular part and a containershaped part.

公开(公告)号：ZA919491B

公开(公告)日：1992-08-26

申请号：ZA919491

申请日：1991-12-02

Applicant: DEGUSSA

Inventor： WERLE PETER ,  PETER WERLE ,  TRAGESER MARTIN ,  MARTIN TRAGESER ,  PIANA HERMANN ,  HERMANN PIANA

IPC: C02F1/50 ,  C07C45/51 ,  C07C47/22 ,  C02F ,  A01N

Abstract: The direct dosing of aqueous solutions with acrolein as a microbiocide is problematic because of the associated laborious safety measures and the hitherto known use of reaction mixtures from the deacetalisation has proven not to be very economical. … According to the invention, aqueous solutions can be dosed in a simple, safe and economical manner with acrolein at a sufficient concentration level to be active as a biocide by cleaving acrolein acetals in the aqueous phase in the presence of a strongly acid deacetalisation catalyst into acrolein and the alcohol component, continuously removing the resulting acrolein from the deacetalisation mixture and transferring the acrolein into the aqueous solution to be dosed using an inert gas stream or a liquid jet pump with the aqueous solution to be dosed as the jet liquid.

公开(公告)号：CA2037873A1

公开(公告)日：1991-09-11

申请号：CA2037873

申请日：1991-03-08

Applicant: DEGUSSA

Inventor： POHL GERHARD ,  WERLE PETER

IPC: A23K20/105 ,  A23K20/24 ,  C07C51/41 ,  C07C51/347 ,  A23K1/16 ,  C07C53/06

Abstract: Calcium formate can be produced with high space-time yields and low engineering expenditure by reacting methyl formate and calcium hydroxide in a molar ratio of substantially 2:1 in an aqueous suspension at 20 to 100.degree.. At the start of the reaction the weight ratio of calcium hydroxide to water is 1:1 to 1:5. Prior to or upon distilling off the methanol formed, the crystalline calcium formate is separated from the aqueous phase and dried. The calcium formate thus produced is better suited as a feed additive than calcium formate obtained as by-product in the production of polyols.

公开(公告)号：DK149453C

公开(公告)日：1986-11-17

申请号：DK167280

申请日：1980-04-18

Applicant: DEGUSSA

Inventor： WERLE PETER ,  MERK WOLFGANG ,  POHL GERHARD ,  HOEVELS FRIEDHELM

IPC: C07C45/00 ,  C07C47/058 ,  C07C67/00 ,  C07D251/18 ,  C09K15/30

公开(公告)号：DK149453B

公开(公告)日：1986-06-16

申请号：DK167280

申请日：1980-04-18

Applicant: DEGUSSA

Inventor： WERLE PETER ,  MERK WOLFGANG ,  POHL GERHARD ,  HOEVELS FRIEDHELM

IPC: C07C45/00 ,  C07C47/058 ,  C07C67/00 ,  C07D251/18 ,  C09K15/30

公开(公告)号：DK487782A

公开(公告)日：1983-05-06

申请号：DK487782

申请日：1982-11-03

Applicant: DEGUSSA

Inventor： WERLE PETER ,  FOCKE HOLGER ,  POPP KLAUS ,  MERK WOLFGANG

IPC: C07C45/86 ,  C07D251/70 ,  C07D ,  C07C

Abstract: There is described new alkylene bismelamines and their production. They correspond to the formula in which o is a number from 10 to 18. Alkylene bismelamines serve as stabilizers for formaldehyde solutions and as such have an outstanding suitability and activity.