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    Composition capable of releasing acraldehyde and its use
    11.
    发明专利
    Composition capable of releasing acraldehyde and its use 未知

    公开(公告)号：AU4539896A

    公开(公告)日：1996-09-04

    申请号：AU4539896

    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.

    ACROLEIN-RELEASING COMPOSITION AND USE THEREOF
    12.
    发明专利
    ACROLEIN-RELEASING COMPOSITION AND USE THEREOF 未知

    公开(公告)号：CA2205597A1

    公开(公告)日：1996-05-30

    申请号：CA2205597

    申请日：1995-10-23

    Applicant: DEGUSSA

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

    IPC: A01N35/02 ,  A01N43/28 ,  C07C43/303 ,  C07C45/51 ,  C07C45/59 ,  A01N43/24

    Abstract: The direct handling of acrolein for combating microbial, plant and animal parasites in water and soil is problematic owing to the potential risks posed by acrolein. According to the invention, an easy-to-handle acrolein-releasing composition is used, the acrolein being released at the site of use owing to contact with water. This composition contains (i) an acrolein acetal having a C1 to C6 alcohol with 1 to 4 hydroxyl groups and (ii) a chemically compatible acid which is soluble therein and has a pKs value of less than 4 and (iii) is anhydrous. A preferred composition contains as acetal 2-vinyl-1,3-dioxolane, as acid, anhydrous oxalic acid, fumaric acid or maleic acid or a mixture of mono and di(C1 to C3)alkylphosphate and additionally a non-ionic surfactant.

    14.
    发明专利
    未知

    公开(公告)号：NO950512D0

    公开(公告)日：1995-02-10

    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

    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.

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