公开(公告)号：AT179861T

公开(公告)日：1999-05-15

申请号：AT96901342

申请日：1996-02-01

Applicant: DEGUSSA

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

IPC: A01N35/02 ,  C02F1/50 ,  C07C45/59 ,  C09K23/00

Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldehyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acide with a pKs of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.

公开(公告)号：AU691690B2

公开(公告)日：1998-05-21

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：NO973148L

公开(公告)日：1997-07-07

申请号：NO973148

申请日：1997-07-07

Applicant: DEGUSSA

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

IPC: A01N35/02 ,  C02F1/50 ,  C07C45/59 ,  C09K23/00

Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldehyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acide with a pKs of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.

公开(公告)号：AU1168695A

公开(公告)日：1995-08-24

申请号：AU1168695

申请日：1995-02-10

Applicant: DEGUSSA

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

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

Abstract: Acrolein (2-propenal) polymers (I) with an average wt. (Mw) of 2000-6000 (see calculation) and a carbonyl content of 0.5-5 mol/kg are new. Also claimed are:(1) prodn. of (I) by adding acrolein and a catalyst simultaneously to a reaction medium having a temp. of ≤ 25 degrees C and a pH of 10-11, stirring the mixt., and separating (I);(2) preservation of materials by adding (I); and(3) biocidal compsns. contg. (I). Mw = ni Mi / ni Mi where Mw = average weight, ni = molar number and Mi = molecular weight.

公开(公告)号：ITTO910282U1

公开(公告)日：1992-05-20

申请号：ITTO910282

申请日：1991-11-19

Applicant: DEGUSSA

Inventor： SOLDAVINI HEINZ ,  LOSS CARL ,  HELMLING OSWALD

IPC: B01D53/30 ,  B01D53/50 ,  C01B17/74

公开(公告)号：HUT57631A

公开(公告)日：1991-12-30

申请号：HU157591

申请日：1991-05-10

Applicant: DEGUSSA

Inventor： VON WEDEL WEDIGO ,  SENFF ELKE ,  HELMLING OSWALD

IPC: B01D53/94 ,  B01D53/86 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J21/16 ,  B01J21/18 ,  B01J23/74 ,  B01J23/755 ,  B01J29/06 ,  B01J31/08 ,  C01B21/38 ,  C01B21/40 ,  B01D53/36 ,  B01D53/34

Abstract: A method for the removal of nitrogen oxides from waste gases and for obtaining nitric acid is described. The waste gas is charged with the required amount of hydrogen peroxide, converted into the gas phase, and the gas mixture is reacted on a solid catalyst to hydrogen nitrate, which is either withdrawn for further use or is converted into nitric acid either by condensation or by scrubbing with water. The method permits the removal of NOx at low concentrations below 2000 ppm with efficiencies above 90%.

公开(公告)号：FI904088A0

公开(公告)日：1990-08-17

申请号：FI904088

申请日：1990-08-17

Applicant: DEGUSSA

Inventor： MEIER JUERGEN ,  ARNOLD GERHARD ,  HELMLING OSWALD

IPC: D21C9/10 ,  D21C9/147 ,  D21C9/16 ,  D21C

Abstract: Delignification and bleaching of lignocellulosic material is enhanced after the pulp has been treated with peroxomonosulfuric acid.

公开(公告)号：PT89533A

公开(公告)日：1989-10-04

申请号：PT8953389

申请日：1989-01-26

Applicant: DEGUSSA

Inventor： HELMLING OSWALD ,  SUSS HANS ULRICH ,  MEIER JURGEN

IPC: D21C9/10 ,  D21C3/00 ,  D21C9/00

公开(公告)号：FI871956A

公开(公告)日：1987-11-18

申请号：FI871956

申请日：1987-05-04

Applicant: DEGUSSA

Inventor： SUESS HANS ULRICH ,  EUL WILFRIED ,  HELMLING OSWALD ,  MAIER JUERGEN

IPC: D21C5/02 ,  D21C9/10 ,  D21C

公开(公告)号：BR9607392A

公开(公告)日：1997-11-25

申请号：BR9607392

申请日：1996-02-01

Applicant: DEGUSSA

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

IPC: A01N35/02 ,  C02F1/50 ,  C07C45/59 ,  C09K23/00

Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldehyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acide with a pKs of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.