Non-linear stimuli-responsive block copolymers for architectural coating applications

Inventor: Elizabeth Marie Glogowski (Eau Claire, WI)

Assignee: WiSys Technology Foundation, Inc.

C08G83/003 C08K3/22 C08K2003/2241

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Quick Facts

Patent No.: US 12662578
App. No.: 18/830,711
Granted: Jun 23, 2026
Kind: B2

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Abstract

Provided are non-linear stimuli-responsive block copolymers, methods for synthesizing the block copolymers, and coating compositions comprising the block copolymers. In an embodiment, a composition is provided that comprises a non-linear stimuli-responsive block copolymer comprising a polyethylene glycol (PEG) block and a poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA) block, wherein the non-linear stimuli-responsive block copolymer comprises a core region and three or more branches extending away from the core region, wherein the three or more branches comprise a branch comprising the PEG block, a branch comprising the PDMAEMA block, a branch comprising both the PEG block and the PDMAEMA block, or a combination thereof.

Claims (20)

1 . A composition comprising a non-linear stimuli-responsive block copolymer comprising a polyethylene glycol (PEG) block and a poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA) block, wherein the non-linear stimuli-responsive block copolymer comprises a core region and three or more branches extending away from the core region, wherein the three or more branches comprise a branch comprising the PEG block, a branch comprising the PDMAEMA block, a branch comprising both the PEG block and the PDMAEMA block, or a combination thereof, wherein the non-linear stimuli-responsive block copolymer has a star morphology wherein the core region comprises a central molecular moiety and the three or more branches extend radially away from the core region, and further wherein the central molecular moiety is a sorbitan moiety, a branched alkyl moiety, or a diamide moiety.

2 . The composition of claim 1 , wherein the non-linear stimuli-responsive block copolymer comprises multiple PEG blocks and the PDMAEMA block.

3 . The composition of claim 1 , wherein the three or more branches comprise at least one PEG-PDMAEMA branch.

4 . The composition of claim 1 , wherein the central molecular moiety is the sorbitan moiety.

5 . The composition of claim 4 , wherein the three or more branches comprise a PEG branch and multiple PEG-PDMAEMA branches.

6 . A composition comprising a non-linear stimuli-responsive block copolymer comprising a polyethylene glycol (PEG) block and a poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA) block, wherein the non-linear stimuli-responsive block copolymer comprises a core region and three or more branches extending away from the core region, wherein the three or more branches comprise a branch comprising the PEG block, a branch comprising the PDMAEMA block, a branch comprising both the PEG block and the PDMAEMA block, or a combination thereof, wherein the non-linear stimuli-responsive block copolymer has a star morphology wherein the core region comprises a central molecular moiety and the three or more branches extend radially away from the core region, wherein the central molecular moiety is a sorbitan moiety, wherein the three or more branches comprise a PEG branch and multiple PEG-PDMAEMA branches, and wherein the PEG branch comprises a fatty acid moiety covalently bound to a PEG block of the PEG branch.

7 . The composition of claim 5 , wherein there are three PEG-PDMAEMA branches.

8 . The composition of claim 5 , wherein the PEG branch comprises a fatty acid moiety covalently bound to a PEG block of the PEG branch and-there are three PEG-PDMAEMA branches.

9 . The composition of claim 8 , wherein a total number of repeating oxyethylene units in the non-linear stimuli-responsive block copolymer is in a range of from 20 to 80 and a molar ratio of oxyethylene units to (2-dimethylamino)ethyl methacrylate units is in a range of from 1:0.1 to 1:5.

10 . The composition of claim 9 , wherein the fatty acid moiety is selected from lauric acid, oleic acid, stearic acid, and palmitic acid.

11 . The composition of claim 1 , wherein the non-linear stimuli-responsive block copolymer consists of the core region, wherein the central molecular moiety is the sorbitan moiety; four branches consisting of a PEG branch having the PEG block, a first PEG-PDMAEMA branch having the PDMAEMA block, a second PEG-PDMAEMA branch, and a third PEG-PDMAEMA branch; and a fatty acid moiety covalently bound to the PEG block of the PEG branch.

12 . A composition comprising a non-linear stimuli-responsive block copolymer comprising a polyethylene glycol (PEG) block and a poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA) block, wherein the non-linear stimuli-responsive block copolymer comprises a core region and three or more branches extending away from the core region, wherein the three or more branches comprise a branch comprising the PEG block, a branch comprising the PDMAEMA block, a branch comprising both the PEG block and the PDMAEMA block, or a combination thereof, wherein the non-linear stimuli-responsive block copolymer has a comb morphology wherein the core region comprises an extended, polymeric molecular chain and the three or more branches are distributed along the extended, polymeric molecular chain and extend away therefrom.

13 . The composition of claim 12 , wherein the core region is a polyether moiety and the three or more branches comprise a PEG branch and multiple PEG-PDMAEMA branches.

14 . The composition of claim 12 , wherein the core region is a polyalkyl moiety and the three or more branches comprise a PDMAEMA branch and multiple PEG branches.

15 . The composition of claim 1 , wherein the non-linear stimuli-responsive block copolymer is a polymerization product of reactants comprising a halide-functionalized PEG precursor and (2-dimethylamino)ethyl methacrylate (DMAEMA).

16 . The composition of claim 15 , wherein the halide-functionalized PEG precursor is selected from halide-functionalized poly(oxyethylene) n-sorbitan-monolaurate, wherein n=20; halide-functionalized poly(oxyethylene) n-sorbitan-monolaurate, wherein n=80; halide-functionalized polyoxyethylene sorbitan monooleate; halide-functionalized polyoxyethylene sorbitan monostearate; and halide-functionalized polyoxyethylene sorbitan monopalmitate.

17 . The composition of claim 1 , wherein the composition further comprises pigment particles and a solvent.

18 . A composition comprising a non-linear stimuli-responsive block copolymer comprising a polyethylene glycol (PEG) block and a poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA) block, wherein the non-linear stimuli-responsive block copolymer comprises a core region and three or more branches extending away from the core region, wherein the three or more branches comprise a branch comprising the PEG block, a branch comprising the PDMAEMA block, a branch comprising both the PEG block and the PDMAEMA block, or a combination thereof, wherein the composition further comprises pigment particles and a solvent, and further wherein the pigment particles comprise TiO 2 particles.

19 . The composition of claim 1 , wherein the branched alkyl moiety is unsubstituted.

20 . The composition of claim 1 , wherein the central molecular moiety is non-polymeric.