Patent ID: 8119743

Claim:
A composition for preventing or reducing aluminosilicate scale in an industrial process having an alkaline process stream comprising a polymer according to the formula: A-{CH 2 CHOHCH 2 O—(CH 2 CH 2 O) x (CH 2 CH(CH 3 )O) y (CH 2 CH 2 O) z —CH 2 CHOHCH 2 O—(B)} a — wherein, a=2-100, x/x+y+z=5-100%, y/x+y+z and z/x+y+z=0-100%; A is chosen from —NH(CH 2 ) 1-20 —Si(OR″) 3 and —NH—Ar—Si(OR″) 3 ; repeating unit B is chosen from —N(CH 2 ) 1-20 —Si(OR″) 3 and —N—Ar—Si(OR″) 3 , wherein: Ar is an aryl or aralkyl group; and R″ is a substituent selected from the group consisting of H; a C 1 -C 20 alkyl, alkenyl, aryl, or aralkyl group optionally substituted; a group I or II metal; and ammonium salts of formula NR 1 R 2 R 3 R 4+ , wherein R 1 , R 2 , R 3 , R 4 , are independently selected from the group consisting of: H; and a C 1 -C 20 alkyl, alkenyl, aryl, or aralkyl group optionally substituted.