NOVEL WHITENING AGENTS FOR CELLULOSIC SUBSTRATES

摘要

This invention relates to novel whitening agents for cellulosic substrates. The whitening agents are comprised of at least two components: at least one chromophore component and at least one polymeric component. Suitable chromophore components generally fluoresce blue, red, violet, or purple color when exposed to ultraviolet light, or they may absorb light to reflect these same shades. The whitening agents are further characterized by having a dispersion component value of the Hansen Solubility Parameter of less than or equal to about 17 MPa0.5. This invention also relates to laundry care compositions including but not limited to liquid and/or powder laundry detergent formulations and rinse added fabric softening (RAFS) compositions that comprise such whitening agents.

主权项

1. A laundry care composition comprising:
a. an enzyme selected from the group consisting of protease, lipase, cutinase, cellulase, and amylase; and b. a whitening agent, said whitening agent comprising:
(i) at least one chromophore component that comprises a thiophene colorant, and(ii) at least one polymeric component; wherein the whitening agent is characterized by the following structure:Wherein R1 and R2 can independently be selected from:
a) [(CH2CR′HO)x(CH2CR″HO)yH]
wherein R′ is selected from the group consisting of H, CH3, CH2O(CH2CH2O)zH, and mixtures thereof; wherein R″ is selected from the group consisting of H, CH2O(CH2CH2O)zH, and mixtures thereof; wherein x+y≦5; wherein y≧1; andwherein z=0 to 5; b) R1=alkyl, aryl or aryl alkyl and R2═[(CH2CR′HO)x(CH2CR″HO)yH]
wherein R′ is selected from the group consisting of H, CH3, CH2O(CH2CH2O)zH, and mixtures thereof; wherein R″ is selected from the group consisting of H, CH2O(CH2CH2O)zH, and mixtures thereof; wherein x+y≦10; wherein y≧1; andwherein z=0 to 5; c) R1=[CH2CH2(OR3)CH2OR4] and R2=[CH2CH2(OR3)CH2O R4]
wherein R3 is selected from the group consisting of H, (CH2CH2O)zH, and mixtures thereof; and wherein z=0 to 10;wherein R4 is selected from the group consisting of (C1-C16)alkyl, aryl groups, and mixtures thereof; and d) wherein R1 and R2 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.