Patent GB-930450-A (GB)
Title: Improvements in fungicides and algaecides
IPC: C07D207/452
Filed: 1961-12-29
Abstract: A paint composition contains 0,5 to 15% based on the weight of the solids of the paint of an N-(mononitro phenyl)- or an N-(dinitrophenyl)-itaconimide or an N-(nitrotolyl)-itaconimide to protect it from attack by fungi.  Specified paints are an acrylate resin latex paint (55% solids) and a soya alkyd resin marine paint containing 64% solids in an aliphatic hydrocarbon paint medium.ALSO:A paint composition contains 0,5 to 15% based on the weight of the solids of the paint of an N-(mono nitro phenyl)- or an N-(dinitro phenyl)-itaconimide or an N-(nitro tolyl)-itaconimide to protect it from attack by fungi.  Specified paints are an acrylate resin latex paint (55% solids) and a soya alkyd resin marine paint (64% solids) in an aliphatic hydrocarbon medium.ALSO:N-(nitrophenyl) itaconimides and N-(nitrotolyl) itaconimides are prepared by reacting the appropriate nitroaniline or nitroaminotoluene with itaconic anhydride to form the N-(nitrophenyl) itaconamic acid or the N-(nitrotolyl)-itaconamic acid which is reacted with acetic anhydride and sodium acetate to form the corresponding itaconimide. N-(3-nitrophenyl) itaconimide is prepared from 3-nitroaniline and N-(2-nitro-4-tolyl) itaconimide from 3-nitro-4-aminotoluene.  The compounds are used as fungicides (see Group VI).ALSO:Fabrics are protected from deterioration by fungi by treating the fabric with an N-(mononitrophenyl)- or an N-(dinitrophenyl)- or an N-(nitrotolyl)-itaconimide.  The fabric usually contains 0,1 to 10% of the itaconimide.  In an example white cotton duck is treated with an acetone solution of N-(3-nitrophenyl)-itaconimide.ALSO:Seeds are protected from attack by fungi by applying thereto, e.g. by coating or tumbling, an N- (mono-nitrophenyl)- or an N- (di-nitrophenyl)- itaconimide or an N- (nitro tolyl)-itaconimide.  The itaconimides may be employed as compositions containing a powdered solid carrier e.g. mica, talc, pyrophyllite and clays such as kaolin clay or a surface active agent, e.g. sodium laury lsulphate or sodium lignosulphate, with or without a powdered solid carrier.  The compositions may also be in the form of dusts containing sand or dirt or aqueous sprays containing a surface active agent with or without a powdered solid carrier.  Specified seeds treated are pea seeds.  Water infested with algae is freed from said algae by treatment with the above itaconimides.ALSO:A method of protecting seeds and seedlings emerging from seeds against attack by fungi comprises applying to the seeds e.g. by coating or to the soil in which the seeds are growing an N-(mono-nitrophenyl)- or an N-(di-nitrophenyl)-itaconimide or an N-(nitrotolyl)-itaconimide (for preparation see Group IV (b)). Plants are protected against attack by fungi by application of said itaconimides at a rate of 1/4 to 10 pounds per acre of the area in which the plants are growing.  The itaconimides may be employed as compositions containing a powdered solid carrier, e.g. mica, talc, pyrophillite and clays such as kaolin clay or a surface-active wetting-agent, e.g. sodium lauryl sulphate or sodium lignosulphate with or without a powdered solid carrier. The compositions may also be in the form of dusts containing sand or dirt or aqueous sprays containing a surface-active dispersing agent with or without a powdered solid carrier.  An example of an aqueous spray contains acetone, a condensate of an alkyl phenol and ethylene oxide as surface-active agent, N-(2-nitrophenyl) itaconimide and water. Specified itaconimides are N-(3-nitrophenyl), N-(4-nitrophenyl), N-(2-nitro-p-tolyl), N-(3-nitro-p-tolyl), N - (4 - nitro - o - tolyl), N - (5 - nitro - o - tolyl) and N-(3-5-dinitrophenyl)-itaconimide.