Patent ID: 7988863

Claim:
A method for reducing the formation of aluminosilicate containing scale in an industrial process having an alkaline process stream comprising the step of: adding to the alkaline process stream an aluminosilicate containing scale inhibiting amount of 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=1-100, 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 ; B is chosen from —N(CH 2 ) 1-20 —Si(OR″) 3 and —N—Ar—Si(OR″) 3 , wherein: Ar is aryl or aralkyl; and R″ is a substituent selected from the group consisting of H; a C1-C20 alkyl, alkenyl, aryl, or aralkyl group optionally substituted; a group I or II metal; and ammonium salts of formula NR1R2R3R4 + , wherein R1, R2, R3, R4, are independently selected from H; and a C1-C20 alkyl, alkenyl, aryl, or aralkyl group optionally substituted.