Structures having a polymer composition covalently bonded to the surface of the structure, methods of attaching the polymer to the surface of the structure, methods of decreasing the amount of microorganisms formed on a structure, and the like, are disclosed.

A novel alkoxylated polyamines obtainable by a process including the steps a) to d) and having amphiphilic properties. According to step a), a polyamine containing up to 10 amine-groups as such is reacted with a first alkylene oxide (AO1) in order to obtain a first intermediate (I1). Said first intermediate (I1) is reacted with a lactone and/or a hydroxy carbon acid in step b) in order to obtain a second intermediate (I2) followed by step c), wherein said second intermediate (I2) is reacted optionally with alkylene oxide in order to obtain a third intermediate (I3). Afterwards, said third intermediate (I3) is reacted in optional step d) with a second alkylene oxide (AO2) in order to obtain the novel alkoxylated polyamines. The alkoxylated polyamines may also be included in cleaning compositions and/or in fabric and home care products, and the compositions or products as such.

A method for treating a pathogen, comprising the steps of: forming a polyethylenimine with hydrochloric acid in a solution, the polyethylenimine comprising secondary amines, the secondary amines being at least partially protonated; adding sodium hydroxide to the solution of the polyethylenimine to increase a pH of the solution by at least one pH unit, such as to above 9; removing at least five percent of non-amine cations, such as sodium ions, in the solution from the solution; lowering the pH, subsequent to the step of removing, of the solution, such as to below 6, to yield a protonation level of the secondary amines in excess of fifty percent; and inactivating at least 50% of a bacteria within 10 minutes of contact of the bacteria with the solution.