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：DE4326575A1

公开(公告)日：1995-02-09

申请号：DE4326575

申请日：1993-08-07

Applicant: DEGUSSA

Inventor： WERLE PETER DR ,  GEISLER BERND ,  TRAGESER MARTIN

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

Abstract: Flowing waters are dosed with acrolein to prevent excessive plant and algal growth. In order to avoid transport of acrolein, the process according to the invention, using the apparatus according to the invention, generates acrolein at the site of use by deacetylization of an acrolein acetal in the presence of an aqueous mineral acid, for which no electrical energy is required. According to the invention an acrolein acetal solution and an aqueous mineral acid solution are transported from pressure-resistant storage vessels (1) and (2) into a mixing chamber (11) by applying a pressure from a pressurized gas cylinder (3) and the mixture is passed through a deacetalization reactor; the reactor to be used comprises a tubular (14) and a vessel-like (15) part.

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：DK0493658T3

公开(公告)日：1993-11-29

申请号：DK91118027

申请日：1991-10-23

Applicant: DEGUSSA

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

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

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：DE59100347D1

公开(公告)日：1993-10-07

申请号：DE59100347

申请日：1991-10-23

Applicant: DEGUSSA

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

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

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：DE4142128A1

公开(公告)日：1993-06-24

申请号：DE4142128

申请日：1991-12-20

Applicant: DEGUSSA

Inventor： WERLE PETER DR ,  WALZER EGON DR ,  TRAGESER MARTIN

IPC: A01N43/66 ,  C07C331/04 ,  C07D251/38 ,  C07D277/74 ,  C07D285/12 ,  C07D285/125

Abstract: 2,4,6-Tris(thiocyanatomethylthio)- 1,3,5-triazine (Ia) is new. Also claimed is prodn. of thiocyanatomethylthio-substd. cpds. of formula (I) by reacting an alkali(ne earth) metal or NH4 salt of a mercapto cpd. of formula R(SH)n (II) with the stoichiometric amt. of methylene bisthiocyanate R(SCH2SCN)n (III). In the formulae, R = an aliphatic, alicyclic, aromatic or heteroaromatic gp.; n = 1-4. The reaction is pref. effected at 10-100 (esp. 40-70) deg.C in H2O. (II) pref. have R = a 5- or 6-membered heteroaromatic gp. contg. 2 or 3 heteroatoms. USE/ADVANTAGE - Cpds. (I), including (Ia), are biocides, esp. with fungicidal and algicidal activity. The process gives high yields (e.g., 86-96%) in shorter reaction times than prior art processes

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：DE4002404A1

公开(公告)日：1991-08-01

申请号：DE4002404

申请日：1990-01-27

Applicant: DEGUSSA

Inventor： WERLE PETER DR ,  TRAGESER MARTIN ,  STOBER REINHARD DR

IPC: A01N33/00 ,  A01N47/44 ,  A01N61/00 ,  C07C279/12 ,  C08G73/02 ,  C08G73/04