A siloxane compound for use as bonding agent in an adhesive formulation or a sealant formulation comprising at least one building block according to formula wherein R a is selected from the group consisting of and in which R a1, R a4, R a5, R a6 and R a7 are independently selected from the group consisting of alkyl group and aryl group, R a2 is selected from hydrogen and methyl group, each R a3 is independently selected from hydrogen and methyl group, c is an integer ranging from 1 to 40, d, e, f and g are integers independently ranging from 2 to 6, R w is an alkyl group, each R x is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, w is selected from 0 and 1, and x is selected from 0, 1 and 2, with the proviso that the sum of w and x ranges from 0 to 2, and at least one building block according to formula wherein R b is selected from the group consisting of and in which L is a C3-C8-alkanediyl group, R b1, R b2 and R b3 are selected from the group consisting of alkyl group and aryl group, h, i and j are integers independently ranging from 2 to 6, each R y is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, R z is an alkyl group, y is selected from 0, 1 and 2, z is selected from 0 and 1 with the proviso that the sum of y and z ranges from 0 to 2, or a salt of the siloxane compound. R a is selected from the group consisting of and in which R a1, R a4, R a5, R a6 and R a7 are independently selected from the group consisting of alkyl group and aryl group, R a2 is selected from hydrogen and methyl group, each R a3 is independently selected from hydrogen and methyl group, c is an integer ranging from 1 to 40, d, e, f and g are integers independently ranging from 2 to 6, R w is an alkyl group, each R x is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, w is selected from 0 and 1, and x is selected from 0, 1 and 2, with the proviso that the sum of w and x ranges from 0 to 2, and at least one building block according to formula wherein R b is selected from the group consisting of and in which L is a C3-C8-alkanediyl group, R b1, R b2 and R b3 are selected from the group consisting of alkyl group and aryl group, h, i and j are integers independently ranging from 2 to 6, each R y is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, R z is an alkyl group, y is selected from 0, 1 and 2, z is selected from 0 and 1 with the proviso that the sum of y and z ranges from 0 to 2, or a salt of the siloxane compound. R a1, R a4, R a5, R a6 and R a7 are independently selected from the group consisting of alkyl group and aryl group, R a2 is selected from hydrogen and methyl group, each R a3 is independently selected from hydrogen and methyl group, c is an integer ranging from 1 to 40, d, e, f and g are integers independently ranging from 2 to 6, R w is an alkyl group, each R x is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, w is selected from 0 and 1, and x is selected from 0, 1 and 2, with the proviso that the sum of w and x ranges from 0 to 2, and at least one building block according to formula wherein R b is selected from the group consisting of and in which L is a C3-C8-alkanediyl group, R b1, R b2 and R b3 are selected from the group consisting of alkyl group and aryl group, h, i and j are integers independently ranging from 2 to 6, each R y is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, R z is an alkyl group, y is selected from 0, 1 and 2, z is selected from 0 and 1 with the proviso that the sum of y and z ranges from 0 to 2, or a salt of the siloxane compound. R b is selected from the group consisting of and in which L is a C3-C8-alkanediyl group, R b1, R b2 and R b3 are selected from the group consisting of alkyl group and aryl group, h, i and j are integers independently ranging from 2 to 6, L is a C3-C8-alkanediyl group, R b1, R b2 and R b3 are selected from the group consisting of alkyl group and aryl group, h, i and j are integers independently ranging from 2 to 6, each R y is independently selected from the group consisting of hydroxy group, oxyalkyl group, oxyalkanediyloxyalkyl group, oxyaryl group and oxyacyl group, R z is an alkyl group, y is selected from 0, 1 and 2, z is selected from 0 and 1 with the proviso that the sum of y and z ranges from 0 to 2, or a salt of the siloxane compound.