Star macromolecules for personal and home care
A polymer composition comprising star macromolecules is provided. Each star macromolecule has a core and five or more arms, wherein the number of arms within a star macromolecule varies across the composition of star molecules. The arms on a star are covalently attached to the core of the star; each arm comprises one or more (co)polymer segments; and at least one arm and/or at least one segment exhibits a different solubility from at least one other arm or one other segment, respectively, in a reference liquid of interest.
1. A star macromolecule represented by the Formula:
[(P1) q1 ] r -Core-[(P3) q3 -(P2) q2 ] s
wherein:
Core represents a crosslinked polymeric segment;
P1 independently represents the hydrophilic polymeric segment of the at least first polymeric arm comprised of monomeric residues of polymerized hydrophilic monomers comprising a mixture of acrylic acid and 2-acrylamido-2-methyl-1-propanesulfonic acid;
P2 independently represents the further segment of the at least second polymeric arm comprised of at least one monomeric residue of a polymerized hydrophobic monomer;
P3 independently represents the hydrophilic polymeric segment of the at least second polymeric arm comprised of monomeric residues of polymerized hydrophilic monomers comprising a mixture of acrylic acid and 2-acrylamido-2-methyl-1-propanesulfonic acid;
q1 independently represents the number of monomeric residues in P1;
q2 independently represents the number of monomeric residues in P2;
q3 independently represents the number of monomeric residues in P3;
r independently represents the number of the at least first polymeric arms covalently attached to the Core; and
independently represents the number of the at least second polymeric arms covalently attached to the Core.
2. The star macromolecule of claim 1 , wherein the one or more star macromolecules have a molecular weight of between 150,000 g/mol and 600,000 g/mol.
3. The star macromolecule of claim 1 , wherein the sum total number of arms (r+t) is between 15 and 45.
4. The star macromolecule of claim 1 , wherein the molar ratio of r tot is in the range of between 8:1 and 3:1.
5. The star macromolecule of claim 1 , wherein both q2 and q3 have a value greater than 100, and wherein q2 is greater than q3.