Composition including polysiloxane phosphate or phosphonate and method of making a treated article

A method of making a treated article having a metal surface, the method comprising treating at least a portion of the metal surface with a composition comprising a polysiloxane functionalized with at least one of a phosphate or phosphonate group, wherein the polysiloxane comprises first divalent units independently represented by formula:

• and at least one of
• a second divalent unit represented by formula:
• or
• a terminal unit represented by formula —R1-Q′-(Z)z or —R1—(S)y—W;
• wherein
• each R is independently alkyl having up to 8 carbon atoms, haloalkyl having up to 8 carbon atoms, alkenyl having up to 8 carbon atoms, phenyl that is unsubstituted or substituted by at least one alkyl or alkoxy having up to 4 carbon atoms or halogen, or benzyl that is unsubstituted or substituted by at least one alkyl or alkoxy having up to 4 carbon atoms or halogen;
• each R1 is independently alkylene, arylene, or alkylene interrupted or terminated by arylene;
• each Q is independently a bond, alkylene, arylalkylene, alkylarylene, or arylene, wherein the alkylene, arylalkylene, alkylarylene, and arylene are optionally at least one of interrupted or terminated by at least one ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, thiourea, or a combination thereof;
• each Q′ is independently a bond or divalent or multivalent alkylene, arylalkylene, alkylarylene, or arylene, wherein the divalent or multivalent alkylene, arylalkylene, alkylarylene, and arylene are optionally at least one of interrupted or terminated by at least one ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, thiourea, or a combination thereof;
• y is 0 or 1;
• z is 1 or 2;
• each W independently comprises divalent units represented by formula
• or a combination thereof;
• each R′ is independently hydrogen or methyl;
• each G is independently selected from the group consisting of —O—, —S—, and —N(R11)—;
• each R11 is independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms;
• each V is independently alkylene that is optionally interrupted by at least one ether linkage or amine linkage;
• each Z is independently —P(O)(OM)2 or —O—P(O)(OM)2;
• and
• each M is independently hydrogen, alkyl, trialkylsilyl, a counter cation, or a bond to the metal surface.

A polysiloxane comprising first divalent units independently represented by formula:

• and at least one of
• a second divalent unit represented by formula:
• or
• a terminal unit represented by formula —R1-Q1-Z or —R1—(S)y—W;
• wherein
• each R is independently alkyl having up to 8 carbon atoms, haloalkyl having up to 8 carbon atoms, alkenyl having up to 8 carbon atoms, phenyl that is unsubstituted or substituted by at least one alkyl or alkoxy having up to 4 carbon atoms or halogen, or benzyl that is unsubstituted or substituted by at least one alkyl or alkoxy having up to 4 carbon atoms or halogen;
• each R1 is independently alkylene, arylene, or alkylene optionally interrupted or terminated by arylene;
• each Q1 is independently alkylene, arylalkylene, alkylarylene, or arylene, wherein the alkylene, arylalkylene, alkylarylene, and arylene are at least one of interrupted or terminated by at least one amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea, thiourea, or a combination thereof;
• y is 0 or 1;
• each W independently comprises divalent units represented by formula
• or a combination thereof;
• each R′ is independently hydrogen or methyl;
• each G is independently selected from the group consisting of —O—, —S—, and —N(R11)—;
• each R11 is independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms;
• each V is independently alkylene that is optionally interrupted by at least one ether linkage or amine linkage;
• each Z is independently —P(O)(OM)2 or —O—P(O)(OM)2;
• and
• each M is independently hydrogen, alkyl, trialkylsilyl, or a counter cation.