Articles with hydrophilic coating

• US 6,866,936 B2
• Filed: 05/15/2001
• Issued: 03/15/2005
• Est. Priority Date: 02/09/1996
• Status: Expired due to Fees

• Current Assignee: Surface Solutions Laboratories Incorporated
• Original Assignee: Surface Solutions Laboratories Incorporated
• Inventors: Opolski, Margaret P.
• Primary Examiner(s): REDDICK, MARIE L
• Application Number:
  US09/855,923
• Publication Number:
  US 20020018898A1
• Time in Patent Office: 1,400 Days
• Field of Search: 428/413, 428/500, 428/502, 428/507, 428/515, 428/520, 428/423.1, 428/34.3, 428/36.5, 428/411.1, 428/424.2, 428/425.1, 428/423.5, 524/502, 524/509, 524/510, 524/516, 524/521, 524/522, 524/35, 524/523, 524/500, 524/503, 524/507, 521/57, 604/265
• US Class Current: 428/413
• CPC Class Codes: A61L 27/34 Macromolecular materials
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: C08G 18/833 by nitrogen containing compounds by azo compounds C08G18/85
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 2666/16 Addition or condensation polymers of aldehydes or ketones according to C08L59/00 - C08L61/00; Derivatives thereof
• CPC Class Codes: C08L 2666/20 Macromolecular compounds having nitrogen in the main chain according to C08L75/00 - C08L79/00; Derivatives thereof
• CPC Class Codes: C08L 2666/22 Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
• CPC Class Codes: C08L 39/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C08L 61/20 Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen with aminophenols C08L61/04
• CPC Class Codes: C08L 71/02 Polyalkylene oxides
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C09D 133/062 Copolymers with monomers not covered by C09D133/06
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: C09D 201/02 characterised by the presence of specified groups , e.g. terminal or pendant functional groups
• CPC Class Codes: Y10T 428/1307 Bag or tubular film [e.g., pouch, flexible food casing, envelope, etc.]
• CPC Class Codes: Y10T 428/1376 Foam or porous material containing
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31511 : Of epoxy ether
• CPC Class Codes: Y10T 428/31551 : Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31562 : Next to polyamide [nylon, etc.]
• CPC Class Codes: Y10T 428/31573 : Next to addition polymer of ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/31591 : Next to cellulosic
• CPC Class Codes: Y10T 428/31855 : Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31862 : Melamine-aldehyde
• CPC Class Codes: Y10T 428/3188 : Next to cellulosic
• CPC Class Codes: Y10T 428/31909 : Next to second addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31928 : Ester, halide or nitrile of addition polymer

Abstract

A water-based coating composition suitable for preparing hydrophilic surfaces on various articles is provided which includes a supporting polymer having functional moieties capable of undergoing crosslinking reactions, said supporting polymer soluble in or emulsified in an aqueous based medium; and a hydrophilic polymer, said hydrophilic polymer associated with the supporting polymer. The composition is characterized in that, when crosslinked at the functional moieties, the supporting polymer forms a three-dimensional network which substantially minimizes disassociation of the hydrophilic polymer.

Claims

1. A coated article, comprising:

an article having a surface coated with a hydrophilic coating, said hydrophilic coating comprising;

a polyacrylate or polymethacrylates polymer matrix, said polyacrylate or polymethacrylate polymer having an equivalent weight of functional moiety in the range of 200 to 1000 g/eq. and forming a three-dimensional network through crosslinking bridges at said functional moiety; and

a hydrophilic polymer, said hydrophilic polymer associated with the polyacrylate or polymethacrylate polymer matrix,

the polyacrylate or polymethacrylate polymer matrix having a crosslink density such that the coating retains slip for up to 24 hours in ambient aqueous medium.

2. The coated article of claim 1, wherein the hydrophilic polymer is selected from the group consisting of poly(N-vinyl lactams), poly(ethylene oxide), poly(propylene oxide), polyacrylamides, cellulosics, polyacrylic acids, polyvinyl alcohols, and polyvinyl ethers.

3. The coated article of claim 1, wherein the crosslink density is in the range of 100-10,000 g/equivalent crosslink.

4. The coated article of claim 1, wherein the crosslinking bridges are selected from the group consisting of moieties derived from aziridines, carbodiimides, epoxides, unsaturated carbon-carbon and carbon-heteroatom bonds, and melamine and urea/formaldehyde condensates.

5. The coated article of claim 1, wherein the surface is selected from the group consisting of ocular devices, lenses, medical devices, membranes, recreational products, open cell foams, and closed cell foams.

6. The coated article of claim 1, wherein the crosslink density is in the range of 100-1000 g/equivalent crosslink.

7. The coated article of claim 1, wherein the polymer of the polymer matrix and the hydrophilic polymer are present in a ratio in the range of 1:

10 to 20;

1.

8. The coated article of claim 1, wherein the polymer of the polymer matrix and the hydrophilic polymer are present in a ratio in the range of 1:

3 to 5;

1.

9. The coated article of claim 1, further comprising:

one or more additives selected from the group consisting of co-solvents, plasticizers, anti-foaming agents, anti-crater agents, coalescing solvents, bioactive agents, antimicrobial agents, antithrombogenic agents, antibiotics, pigments, paint additives, radiopacifiers and ion conductors.

10. The coated article of claim 1, wherein the hydrophilic polymer comprises poly(vinylpyrrolidone).

11. The coated article of claim 1, wherein the polyacrylate or polymethacrylate polymer matrix comprises a polymer component having no functional moieties and a polyacrylate or polymethacrylate.

12. The coated article of claim 1, wherein the functional moiety is selected from the group consisting of amino, hydroxyl, amido, carboxylic acid, sulfhydryl, unsaturated carbon-carbon and carbon-heteroatom bonds, —

N—

COOH, and —

N(CO)H.

13. The coated article of claim 11, wherein the polyacrylate or polymethacrylate polymer matrix comprises poly(ethylene-co-acrylate).

14. The coated article of claim 11, wherein the polyacrylate or polymethacrylate polymer matrix a copolymer of a monomer having an unsaturated carbon-carbon bond and acrylic acid or methacrylic acid.