Modified lignin biopolymer useful in cleaning compositions
First Claim
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1. A modified lignin polymer comprising:
- a randomly substituted lignin backbone comprising substituted lignin monomer residues and unsubstituted lignin monomer residues, wherein at least two or more of the hydroxyl groups on the randomly substituted lignin backbone have been substituted with R substituent groups,wherein each R substituent group is independently an R substituent type selected from the group consisting of quaternary nitrogen containing substituents R1 with a substitution weight percentage ranging from 0% to 75%, anionic substituents R2 with a substitution weight percentage ranging from 0% to 90%, alkoxy substituents R3 with a substitution weight percentage ranging from 0% to 90%, and combinations of any thereof, provided that the randomly substituted lignin backbone comprises at least two different R substituent types;
wherein the modified lignin polymer has a weight average molecular weight ranging from 2,000 Daltons to 300,000 Daltons.
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Abstract
Novel modified lignin polymers containing anionic, cationic, and/or alkoxy substitution are disclosed. Further, new cleaning compositions including the novel substituted lignin polymers are disclosed. Methods of forming the modified lignin polymers and cleaning compositions are disclosed.
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Citations
18 Claims
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1. A modified lignin polymer comprising:
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a randomly substituted lignin backbone comprising substituted lignin monomer residues and unsubstituted lignin monomer residues, wherein at least two or more of the hydroxyl groups on the randomly substituted lignin backbone have been substituted with R substituent groups, wherein each R substituent group is independently an R substituent type selected from the group consisting of quaternary nitrogen containing substituents R1 with a substitution weight percentage ranging from 0% to 75%, anionic substituents R2 with a substitution weight percentage ranging from 0% to 90%, alkoxy substituents R3 with a substitution weight percentage ranging from 0% to 90%, and combinations of any thereof, provided that the randomly substituted lignin backbone comprises at least two different R substituent types; wherein the modified lignin polymer has a weight average molecular weight ranging from 2,000 Daltons to 300,000 Daltons. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A modified lignin polymer comprising:
a randomly substituted lignin backbone having a structure - View Dependent Claims (18)
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12. A cleaning composition comprising a modified lignin polymer having a randomly substituted lignin backbone comprising:
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substituted lignin monomer residues and unsubstituted lignin monomer residues, wherein at least two or more of the hydroxyl groups on the randomly substituted lignin backbone have been substituted with R substituent groups, wherein each R substituent group is independently an R substituent type selected from the group consisting of nitrogen containing substituents R1 with a substitution weight percentage ranging from 0% to 75%, anionic substituents R2 with a substitution weight percentage ranging from 0% to 90%, alkoxy substituents R3 with a substitution weight percentage ranging from 0% to 90%, and combinations of any thereof, provided that the randomly substituted lignin backbone comprises at least two different R substituent types; wherein the modified lignin polymer has a weight average molecular weight ranging from 2,000 Daltons to 300,000 Daltons. - View Dependent Claims (13, 14)
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15. A method for making a cleaning composition comprising:
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adding a modified lignin polymer to the cleaning composition, wherein the modified lignin polymer has a randomly substituted lignin backbone comprising; substituted lignin monomer residues and unsubstituted lignin monomer residues, wherein at least two or more of the hydroxyl groups on the randomly substituted lignin backbone have been substituted with R substituent groups, wherein each R substituent group is independently an R substituent type selected from the group consisting of nitrogen containing substituents R1 with a substitution weight percentage ranging from 0% to 75%, anionic substituents R2 with a substitution weight percentage ranging from 0% to 90%, alkoxy substituents R3 with a substitution weight percentage ranging from 0% to 90%, and combinations of any thereof, provided that the randomly substituted lignin backbone comprises at least two different R substituent types; wherein the modified lignin polymer has a weight average molecular weight ranging from 2,000 Daltons to 300,000 Daltons. - View Dependent Claims (16, 17)
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Specification