公开(公告)号：DE59001392D1

公开(公告)日：1993-06-17

申请号：DE59001392

申请日：1990-02-17

Applicant: DEGUSSA

Inventor： WERLE PETER DR ,  TRAGESER MARTIN ,  WEISS SVEA

IPC: A01N47/06 ,  A01N47/14 ,  A01N47/16 ,  C07C329/16 ,  C07C333/20

公开(公告)号：AT89270T

公开(公告)日：1993-05-15

申请号：AT90103086

申请日：1990-02-17

Applicant: DEGUSSA

Inventor： WERLE PETER DR ,  TRAGESER MARTIN ,  WEISS SVEA

IPC: A01N47/06 ,  A01N47/14 ,  A01N47/16 ,  C07C329/16 ,  C07C333/20

公开(公告)号：ZA922992B

公开(公告)日：1992-12-30

申请号：ZA922992

申请日：1992-04-24

Applicant: DEGUSSA

Inventor： WERLE PETER ,  PETER WERLE ,  TRAGESER MARTIN ,  MARTIN TRAGESER ,  DUDERSTADT ULRIKE ,  ULRIKE DUDERSTADT

IPC: C07C53/06 ,  C07C

Abstract: Calcium formate is produced in aqueous phase by reaction of calcium hydroxide with formaldehyde in the presence of hydrogen peroxide or by reaction of calcium peroxide with formaldehyde. The molar ratio of CaO or Ca(OH)2 to H2CO to H2O2 is 1 to 2 to 1-1.2 and the molar ratio of CaO2 to H2CO is 1 to 2. Calcium formate is obtained in an almost substantially quantitative yield and in highly pure form. The process avoids the disadvantages of prior processes for the production of calcium formate from calcium hydroxide and formaldehyde.

公开(公告)号：AT82565T

公开(公告)日：1992-12-15

申请号：AT89114631

申请日：1989-08-08

Applicant: DEGUSSA

Inventor： WERLE PETER ,  TRAGESER MARTIN

IPC: C07C45/86 ,  C07C47/058 ,  C09K15/30

公开(公告)号：ZA9109491B

公开(公告)日：1992-08-26

申请号：ZA9109491

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

CPC classification number: C02F1/50 ,  C07C45/515 ,  C07C47/22

公开(公告)号：NO914733L

公开(公告)日：1992-06-04

申请号：NO914733

申请日：1991-12-02

Applicant: DEGUSSA

Inventor： WERLE PETER ,  TRAGESER MARTIN ,  PIANA HERMANN

IPC: C02F1/50 ,  C07C45/51 ,  C07C47/22 ,  A01N35/02

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：NO914733A

公开(公告)日：1992-06-04

申请号：NO914733

申请日：1991-12-02

Applicant: DEGUSSA

Inventor： WERLE PETER ,  TRAGESER MARTIN ,  PIANA HERMANN

IPC: C02F1/50 ,  C07C45/51 ,  C07C47/22 ,  A01N35/02

CPC classification number: C02F1/50 ,  C07C45/515 ,  C07C47/22

公开(公告)号：FI915682A

公开(公告)日：1992-06-04

申请号：FI915682

申请日：1991-12-02

Applicant: DEGUSSA

Inventor： WERLE PETER ,  TRAGESER MARTIN ,  PIANA HERMANN

IPC: C02F1/50 ,  C07C45/51 ,  C07C47/22 ,  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：DE4038471A1

公开(公告)日：1992-06-04

申请号：DE4038471

申请日：1990-12-03

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：CA2056820A1

公开(公告)日：1992-06-04

申请号：CA2056820

申请日：1991-12-02

Applicant: DEGUSSA

Inventor： WERLE PETER ,  TRAGESER MARTIN ,  PIANA HERMANN

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.