Defoamer formulations containing: organopolysiloxanes containing per molecule at least one structural unit of general formula O 1/2 R 2 Si-Y-SiRO 2/2 and at least 2 units of general formula R 1 R 2 SiO 1/2 and units of general formula R 2 SiO 2/2, wherein R may be identical or different and represents a monovalent SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms which may contain one or more nonadjacent oxygen atoms and which is free from aliphatic carbon-carbon multiple bonds and R 1 is R or an alkenyl radical having 2 to 30 carbon atoms, preferably a methyl radical or a vinyl radical, wherein at least one alkenyl radical per molecule is present, Y represents a divalent hydrocarbon radical having 2 to 30 carbon atoms, with the proviso that the organopolysiloxane contains a structural element of formula R 2 Y 2 SiO-(SiR 2 O) x1 -SiRY 1 O-(SiR 2 O) x2 -SiR 2 R 1, wherein R and R 1 are as defined above, Y 1 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiR 2 O 1/2, Y 2 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiRO 2/2, and x 1 and x 2 is 0 or an integer, with the proviso that the sum of x 1 +x 2 is x, wherein x is on average more than 5, preferably more than 10, and less than 100, by preference less than 80, preferably less than 60, fillers, organopolysiloxane resins composed of units of general formula R 2 e (R 3 O f SiO (4-e-f)/2, wherein R 2 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted, SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms, R 3 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted hydrocarbon radical having 1 to 4 carbon atoms, e is 0, 1, 2 or 3 and f is 0, 1, 2, or 3, with the proviso that the sum of e+f is not more than 3 and that the sum of e+f is 2 in less than 50% of all units of formula in the organopolysiloxane resin, and phosphoric acid. organopolysiloxanes containing per molecule at least one structural unit of general formula O 1/2 R 2 Si-Y-SiRO 2/2 and at least 2 units of general formula R 1 R 2 SiO 1/2 and units of general formula R 2 SiO 2/2, wherein R may be identical or different and represents a monovalent SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms which may contain one or more nonadjacent oxygen atoms and which is free from aliphatic carbon-carbon multiple bonds and R 1 is R or an alkenyl radical having 2 to 30 carbon atoms, preferably a methyl radical or a vinyl radical, wherein at least one alkenyl radical per molecule is present, Y represents a divalent hydrocarbon radical having 2 to 30 carbon atoms, with the proviso that the organopolysiloxane contains a structural element of formula R 2 Y 2 SiO-(SiR 2 O) x1 -SiRY 1 O-(SiR 2 O) x2 -SiR 2 R 1, wherein R and R 1 are as defined above, Y 1 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiR 2 O 1/2, Y 2 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiRO 2/2, and x 1 and x 2 is 0 or an integer, with the proviso that the sum of x 1 +x 2 is x, wherein x is on average more than 5, preferably more than 10, and less than 100, by preference less than 80, preferably less than 60, R may be identical or different and represents a monovalent SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms which may contain one or more nonadjacent oxygen atoms and which is free from aliphatic carbon-carbon multiple bonds and R 1 is R or an alkenyl radical having 2 to 30 carbon atoms, preferably a methyl radical or a vinyl radical, wherein at least one alkenyl radical per molecule is present, Y represents a divalent hydrocarbon radical having 2 to 30 carbon atoms, R and R 1 are as defined above, Y 1 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiR 2 O 1/2, Y 2 represents a divalent hydrocarbon radical having 2 to 30 carbon atoms which is bonded to a group having the formula SiRO 2/2, and x 1 and x 2 is 0 or an integer, fillers, organopolysiloxane resins composed of units of general formula R 2 e (R 3 O f SiO (4-e-f)/2, wherein R 2 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted, SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms, R 3 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted hydrocarbon radical having 1 to 4 carbon atoms, e is 0, 1, 2 or 3 and f is 0, 1, 2, or 3, with the proviso that the sum of e+f is not more than 3 and that the sum of e+f is 2 in less than 50% of all units of formula in the organopolysiloxane resin, and R 2 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted, SiC-bonded hydrocarbon radical having 1 to 30 carbon atoms, R 3 may be identical or different and represents a hydrogen atom or a monovalent, optionally substituted hydrocarbon radical having 1 to 4 carbon atoms, e is 0, 1, 2 or 3 and f is 0, 1, 2, or 3, phosphoric acid.