Alpha, omega-allyl terminated linear poly(methacrylic acid) macromonomers for end-linked hydrogels and method of preparation
First Claim
1. A method for making an α
- ,ω
-allyl-terminated macromonomer comprising a plurality of units of an α
,β
-unsaturated carboxylic acid, the method comprising;
(a) forming a first mixture containing an ester of an α
,β
-unsaturated carboxylic acid, a radical initiator comprising an allyl group and a halogen, and a catalyst comprising a transition metal complex, wherein the ester is capable of reacting with a mixture containing trifluoroacetic acid to form the α
,β
-unsaturated carboxylic acid;
(b) stirring the first mixture to form a second mixture containing an α
-allyl,ω
-halogen terminated macromonomer comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid;
(c) adding to the second mixture a third mixture containing a compound having at least one transferable allyl group to form a fourth mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid;
(d) separating the α
,ω
-allyl terminated macromonomer formed in step (c) from the fourth mixture;
(e) mixing the α
,ω
-allyl terminated macromonomer formed in step (c) with a mixture containing trifluoroacetic acid to form a fifth mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid; and
(f) separating the α
,ω
-allyl terminated macromonomer formed in step (e) from the fifth mixture.
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a method for making α,ω-allyl terminated macromonomers comprising a plurality of units of an α,β-unsaturated carboxylic acid. The method comprises forming a first mixture containing an ester of an α,β-unsaturated carboxylic acid, a radical initiator comprising an allyl group and a halogen, and a catalyst comprising a transition metal complex. The ester of the α,β-unsaturated carboxylic acid is an ester capable of reacting with a mixture comprising trifluoroacetic acid (TFA) to form the α,β-unsaturated carboxylic acid. The mixture is stirred to form a second mixture containing an α-allyl, ω-halogen-terminated macromonomer comprising a plurality of units of the ester of the α,β-unsaturated carboxylic acid. A third mixture comprising a compound containing at least one transferable allyl group is then added to the second mixture to form a fourth mixture containing a first α,ω-allyl terminated macromonomer comprising a plurality of units of the ester of the α,β-unsaturated carboxylic acid. The first α,ω-allyl terminated macromonomer is separated from the fourth mixture and is mixed with a mixture containing TFA to form a fifth mixture containing the α,ω-allyl terminated macromonomer comprising a plurality of units of the α,β-unsaturated carboxylic acid. The α,ω-allyl terminated macromonomer comprising a plurality of units of the α,β-unsaturated carboxylic acid is then separated from the fifth mixture. Also enclosed is a related method for making end-linked hydrogels comprising a plurality of units of an α,β-unsaturated carboxylic acid. The method comprises forming a first mixture containing an α,ω-allyl terminated macromonomer comprising a plurality of units of the α,β-unsaturated carboxylic acid and a radical initiator. The first mixture is treated with UV-radiation, visible light, or heat to form a second mixture comprising an end-linked hydrogel comprising a plurality of units of the α,β-unsaturated carboxylic acid.
7 Citations
48 Claims
-
1. A method for making an α
- ,ω
-allyl-terminated macromonomer comprising a plurality of units of an α
,β
-unsaturated carboxylic acid, the method comprising;
(a) forming a first mixture containing an ester of an α
,β
-unsaturated carboxylic acid, a radical initiator comprising an allyl group and a halogen, and a catalyst comprising a transition metal complex, wherein the ester is capable of reacting with a mixture containing trifluoroacetic acid to form the α
,β
-unsaturated carboxylic acid;
(b) stirring the first mixture to form a second mixture containing an α
-allyl,ω
-halogen terminated macromonomer comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid;
(c) adding to the second mixture a third mixture containing a compound having at least one transferable allyl group to form a fourth mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid;
(d) separating the α
,ω
-allyl terminated macromonomer formed in step (c) from the fourth mixture;
(e) mixing the α
,ω
-allyl terminated macromonomer formed in step (c) with a mixture containing trifluoroacetic acid to form a fifth mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid; and
(f) separating the α
,ω
-allyl terminated macromonomer formed in step (e) from the fifth mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- ,ω
-
23. An α
- ,ω
-allyl terminated macromonomer comprising a plurality of units of an α
,β
-unsaturated carboxylic acid. - View Dependent Claims (24)
- ,ω
-
25. A method for making a macromonomer comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, the method comprising(a) mixing a macromonomer comprising a plurality of units of an ester of the α
,β
-unsaturated carboxylic acid with a first mixture comprising trifluoroacetic acid to form a second mixture comprising the macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid; and
(b) separating the macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid from the second mixture. - View Dependent Claims (26)
- ,β
-
27. A method for making end-linked hydrogels comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, the method comprising;
(a) forming a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid and a radical initiator; and
(b) treating the first mixture with at least one of UV-radiation, visible light, and heat to form a second mixture containing the end-linked hydrogel comprising a plurality of units of the α
,β
-unsaturated carboxylic acid. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
- ,β
-
37. An end-linked hydrogel comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, prepared by the method comprising;
(a) forming a first mixture comprising an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid and a radical initiator; and
(b) treating the first mixture with at least one of UV-radiation, visible light, and heat to form a second mixture containing the end-linked hydrogel comprising a plurality of units of the α
,β
-unsaturated carboxylic acid. - View Dependent Claims (38, 39, 40)
- ,β
-
41. A method for making end-linked hydrogels comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, the method comprising;
(a) forming a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of an ester of the α
,β
-unsaturated carboxylic acid and a radical initiator, wherein the ester is capable of reacting with a mixture comprising trifluoroacetic acid to form the α
,β
-unsaturated carboxylic acid;
(b) treating the first mixture with at least one of UT-radiation, visible light, and heat to form a second mixture containing an end-linked gel comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid;
(c) mixing the end-linked gel with a mixture comprising trifluoroacetic acid to form a third mixture containing the hydrogel comprising a plurality of units of the α
,β
-unsaturated carboxylic acid; and
(d) separating the end-linked hydrogel formed in step (c) from the third mixture. - View Dependent Claims (42, 43, 44)
- ,β
-
45. A method for coating a surface with a hydrogel comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, comprising;
(a) coating the surface with a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the;
α
,β
-unsaturated carboxylic acid and a radical initiator; and
(b) treating the coating of the first mixture on the surface with one of UV-radiation, visible light, and heat to form a coating comprising the end-linked hydrogel having a plurality of units of the α
,β
-unsaturated carboxylic acid.
- ,β
-
46. A surface coated with an end-linked hydrogel comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, wherein the surface is prepared by the method comprising;
(a) coating the surface with a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of the α
,β
-unsaturated carboxylic acid and a radical initiator; and
(b) treating the coating of the first mixture on the surface with one of UV-radiation, visible light, and heat to form a coating comprising the end-linked hydrogel having a plurality of units of the α
,β
-unsaturated carboxylic acid.
- ,β
-
47. A method for coating a surface with a hydrogel comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, comprising;
(a) coating the surface with a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of an ester of the α
,β
-unsaturated carboxylic acid and a radical initiator, wherein the ester is capable of reacting with a mixture comprising trifluoroacetic acid to form the α
,β
-unsaturated carboxylic acid;
(b) treating the coating of the first mixture with at least one of UV-radiation, visible light, and heat to form a coating containing an end-linked gel comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid; and
(c) treating the coating containing the end-linked gel with a mixture comprising trifluoroacetic acid to form a coating containing the hydrogel comprising a plurality of units of the α
,β
-unsaturated carboxylic acid.
- ,β
-
48. A surface coated with an end-linked hydrogel comprising a plurality of units of an α
- ,β
-unsaturated carboxylic acid, wherein the surface is prepared by the method comprising;
(a) coating the surface with a first mixture containing an α
,ω
-allyl terminated macromonomer comprising a plurality of units of an ester of the α
,β
-unsaturated carboxylic acid and a radical initiator, wherein the ester is capable of reacting with a mixture comprising trifluoroacetic acid to form the α
,β
-unsaturated carboxylic acid;
(b) treating the coating of the first mixture with at least one of UV-radiation, visible light, and heat to form a coating containing an end-linked gel comprising a plurality of units of the ester of the α
,β
-unsaturated carboxylic acid; and
(c) treating the coating containing the end-linked gel with a mixture comprising trifluoroacetic acid to form a coating containing the hydrogel comprising a plurality of units of the α
,β
-unsaturated carboxylic acid.
- ,β
Specification