IP Library › Granted Patent US 7,935,773
Granted Patent B2
US 7,935,773 · App. 11/660,566 · Granted May 3, 2011

Water-swellable copolymers and articles and coatings made therefrom

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Quick Facts
Patent No.
US 7,935,773
App. No.
11/660,566
Granted
May 3, 2011
Kind
B2
Abstract

The present disclosure relates to compositions comprising a copolymer that includes a first monomer and a second monomer that is different from the first monomer, wherein both the first and second monomer are selected from the group consisting of 3-sulfopropyl acrylate potassium salt, sodium acrylate, N-(tris(hydroxyl methyl)methyl)acrylamide, and 2-acrylamideo-2-methyl-1-propane sulfonic acid. The present disclosure further relates to methods for preparing the copolymer compositions and shaped articles comprising the copolymers.

Claims (19)

1. A composition comprising a copolymer that includes a first monomer and a second monomer that is different from the first monomer, and a hydrophilicity modifying monomer, wherein both the first and second monomer are selected from the group consisting of 3-sulfopropyl acrylate potassium salt, sodium acrylate, N-(tris(hydroxyl methyl)methyl)acrylamide, and 2-acrylamido-2-methyl-1-propane sulfonic acid, and the hydrophilicity modifying monomer is selected from the group consisting of methylmethacrylate, butylacrylate, and cyclohexylacrylate.

2. A composition as in claim 1 wherein the first monomer is 3-sulfopropyl acrylate potassium salt and the second monomer is sodium acrylate.

3. A composition as in claim 1 wherein the first monomer is 3-sulfopropyl acrylate potassium salt and the second monomer is N-(tris(hydroxyl methyl)methyl)acrylamide.

4. A composition as in claim 1 wherein the first monomer is 3-sulfopropyl acrylate potassium salt and the second monomer is 2-acrylamido-2-methyl-1-propane sulfonic acid.

5. A composition as in claim 1 wherein the first monomer is sodium acrylate and the second monomer is N-(tris(hydroxyl methyl)methyl)acrylamide.

6. A composition as in claim 1 wherein the first monomer is sodium acrylate and the second monomer is 2-acrylamido-2-methyl-1-propane sulfonic acid.

7. A composition as in claim 1 wherein the first monomer is N-(tris(hydroxyl methyl)methyl)acrylamide and the second monomer is 2-acrylamido-2-methyl-1-propane sulfonic acid.

8. A composition as in claim 1 wherein the copolymer is crosslinked.

9. A composition as in claim 1 further comprising a therapeutically beneficial compound.

10. A composition as in claim 1 further comprising a contrasting agent.

11. A composition as in claim 1 further comprising a radioactive substance.

12. A composition as in claim 1 further comprising a dye.

13. A composition comprising a copolymer that includes 3-sulfopropyl acrylate potassium salt and N-(tris(hydroxyl methyl)methyl)acrylamide.

14. A composition as in claim 13 wherein the copolymer is crosslinked.

15. A composition as in claim 13 further comprising a therapeutically beneficial compound.

16. A composition as in claim 13 further comprising a contrasting agent.

17. A composition as in claim 13 further comprising a radioactive substance.

18. A composition as in claim 13 further comprising a dye.

19. A composition as in claim 13 further comprising a hydrophilicity modifying monomer.

Assignments (1)
CHANGE OF NAME Recorded Oct 2, 2012
From: TYCO HEALTHCARE GROUP LP
To: COVIDIEN LP
Reel/Frame 029065/0448 →