Patent ID: 8022100

Claim:
A whitening agent for cellulosic substrates comprising: (a) at least one chromophore component that comprises a thiophene colorant, and (b) at least one polymeric component; wherein the whitening agent is characterized by the following structure: Wherein R 1 and R 2 are independently selected from: a) ((CH 2 CR′HO) x (CH 2 CR″HO) y H) wherein R′ is selected from the group consisting of H, CH 3 , CH 2 O(CH 2 CH 2 O) z H; wherein R″ is selected from the group consisting of H, CH 2 O(CH 2 CH 2 O) z H; wherein x+y≦5; wherein y≧1; and wherein z=0 to 5; b) R 1 =alkyl, aryl or aryl alkyl and R 2 ═((CH 2 CR′HO) x (CH 2 CR″HO) y H) wherein R′ is selected from the group consisting of H, CH 3 , CH 2 O(CH 2 CH 2 O) z H; wherein R″ is selected from the group consisting of H, CH 2 O(CH 2 CH 2 O) z H; wherein x+y≦10; wherein y≧1; and wherein z=0 to 5; c) R 1 ═(CH 2 CH 2 (OR 3 )CH 2 OR 4 ) and R 2 ═(CH 2 CH 2 (OR 3 )CH 2 OR 4 ) wherein R 3 is selected from the group consisting of H, (CH 2 CH 2 O) 2 H; and wherein z=0 to 10; wherein R 4 is selected from the group consisting of (C 1 -C 18 )alkyl, aryl groups; and d) wherein R 1 and R 2 can independently be selected from the amino addition product of styrene oxide, glycidyl methyl ether, isobutyl glycidyl ether, isopropylglycidyl ether, t-butyl glycidyl ether, 2-ethylhexylgycidyl ether, and glycidylhexadecyl ether, followed by the addition of from 1 to 10 alkylene oxide units; and Wherein R 5 , R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, oxyalkyl, oxyaryl, sulfonaidoalkyl, sulfonamidoaryl, amidoalkyl, amidodialkyl, amidoaryl, amidodiaryl, halogen, thioalkyl and thioaryl.