1. Biocide composition for killing microorganisms in aqueous or water containing system which comprises 2,2-dibrommalonamid and biocide containing electrophile selected from the group consisting of 2-bromo-2-nitropropane-1,3-diol, bromnitrostirol, methylenebis (thiocyanate) and 1,2-dibromo-2,4-ditsianobutan.2. A composition according to claim 1, wherein the 2,2-dibrommalonamida weight to weight ratio of the biocide containing electrophile is from about 100: 1 to about 1: 100.3. A composition according to claim 1, wherein the biocide containing electrophile is 2-bromo-2-nitropropane-1,3-diol and the weight ratio of 2,2-dibrommalonamida by weight of 2-bromo-2-nitropropane-1,3-diol It is from about 32: 1 to about 1: 2.4. A composition according to claim 1, wherein the biocide containing electrophile is bromnitrostirol and the weight ratio of 2,2-dibrommalonamida to bromnitrostirola weight is from about 32: 1 to about 1: 2.5. A composition according to claim 1, wherein the biocide containing electrophile is methylenebis (thiocyanate), and the weight ratio of 2,2-dibrommalonamida the weight of methylenebis (thiocyanate) is from about 32: 1 to about 4: 1.6. A composition according to claim 1, wherein the biocide containing electrophile is 1,2-dibromo-2,4-ditsianobutan and the weight ratio of 2,2-dibrommalonamida the weight of 1,2-dibromo-2,4-ditsianobutana is from about 8 : 1 to about 2: 1.7. A composition according to any one of claims 1-6, which is a paint, a coating, an aqueous emulsion, latex, binder, ink, pigment dispersion, household chemical means or means for cleaning industrial premises, detergent, dishwashing detergent, mineral suspension polymer emulsions, putty, binding material, for the compound1. Биоцидная композиция, предназначенная для уничтожения микроорганизмов в водной или содержащей воду системе, которая содержит 2,2-диброммалонамид и биоцид, содержащий электрофил, выбранный из группы, включающей 2-бром-2-нитропропан-1,3-диол, бромнитростирол, метиленб