A composition comprising: one or more polydiorganosiloxanes selected from the formulas and: wherein each occurrence of En is independently selected from the group consisting of hydrogen and -C(=O)-OR 1, wherein R 1 is selected from the group consisting alkyl, alkylaryl, and aryl groups, each group having up to 30 carbon atoms, T is independently selected from the group consisting of divalent optionally substituted hydrocarbyl residues having up to 60 carbon atoms, optionally comprising one or more heteroatoms, said group T being bond to Si and O-En via a carbon atom, which groups T are selected from (Si shown for indicating binding direction of T): Si-(alkyl)-(aryl)- Si-(alkyl)-O-(aryl)- Si(alkyl)-O-C -(aryl)-, and Si-(alkyl)-O-(alkyl)-, Ar is independently selected from the group consisting of divalent aromatic residues having up to 60 carbon atoms which can be independently from each other substituted with a substituent selected from the group consisting of halogen, alkyl and alkoxy groups, R is an organic group having up to 30 carbon atoms, n is an average value of from 10 to 400, and m is an average value of from 1 to 10 and 0.02 to 5.0 mmol/kg of the total of weight of and of one or more organic or inorganic salts. one or more polydiorganosiloxanes selected from the formulas and: wherein each occurrence of En is independently selected from the group consisting of hydrogen and -C(=O)-OR 1, wherein R 1 is selected from the group consisting alkyl, alkylaryl, and aryl groups, each group having up to 30 carbon atoms, T is independently selected from the group consisting of divalent optionally substituted hydrocarbyl residues having up to 60 carbon atoms, optionally comprising one or more heteroatoms, said group T being bond to Si and O-En via a carbon atom, which groups T are selected from (Si shown for indicating binding direction of T): Si-(alkyl)-(aryl)- Si-(alkyl)-O-(aryl)- Si(alkyl)-O-C -(aryl)-, and Si-(alkyl)-O-(alkyl)-, Ar is independently selected from the group consisting of divalent aromatic residues having up to 60 carbon atoms which can be independently from each other substituted with a substituent selected from the group consisting of halogen, alkyl and alkoxy groups, R is an organic group having up to 30 carbon atoms, n is an average value of from 10 to 400, and m is an average value of from 1 to 10 and En is independently selected from the group consisting of hydrogen and -C(=O)-OR 1, wherein R 1 is selected from the group consisting alkyl, alkylaryl, and aryl groups, each group having up to 30 carbon atoms, T is independently selected from the group consisting of divalent optionally substituted hydrocarbyl residues having up to 60 carbon atoms, optionally comprising one or more heteroatoms, said group T being bond to Si and O-En via a carbon atom, which groups T are selected from (Si shown for indicating binding direction of T): Si-(alkyl)-(aryl)- Si-(alkyl)-O-(aryl)- Si(alkyl)-O-C -(aryl)-, and Si-(alkyl)-O-(alkyl)-, Ar is independently selected from the group consisting of divalent aromatic residues having up to 60 carbon atoms which can be independently from each other substituted with a substituent selected from the group consisting of halogen, alkyl and alkoxy groups, R is an organic group having up to 30 carbon atoms, n is an average value of from 10 to 400, and m is an average value of from 1 to 10 0.02 to 5.0 mmol/kg of the total of weight of and of one or more organic or inorganic salts.