Coated substrate having a low coefficient of friction hydrophilic coating and a method of making the same

• US 4,119,094 A
• Filed: 03/23/1978
• Issued: 10/10/1978
• Est. Priority Date: 08/08/1977
• Status: Expired due to Term

• Current Assignee: Hydromer, Inc.
• Original Assignee: Biosearch Medical Products, Inc. (Hydromer, Inc.)
• Inventors: Ou-Yang, David T., Micklus, Michael J.
• Primary Examiner(s): Robinson, Ellis
• Application Number:
  US05/889,249
• Time in Patent Office: 201 Days
• Field of Search: 428/425, 428/35, 428/36, 428/411, 428/420, 428/522, 428/492, 428/521, 428/480, 206/69, 128/132 R, 128/294, 128/348, 128/349 R, 128/350 R, 128/351, 260/859 R, 260/77.5 CR, 3/1
• US Class Current: 128/844
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 6/04 Condoms, sheaths or the like , e.g. combined with devices protecting against contagion
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 33/068 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L33/062 takes precedence
• CPC Class Codes: A61M 2025/0046 Coatings for improving slidability
• CPC Class Codes: B05D 5/08 to obtain an anti-friction or anti-adhesive surface rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30
• CPC Class Codes: B26B 21/443 Lubricating strips attached to the razor head
• CPC Class Codes: C08G 18/6283 Polymers of nitrogen containing compounds having carbon-to-carbon double bonds C08G18/6262, C08G18/6266 take precedence
• CPC Class Codes: C08J 2375/04 Polyurethanes
• CPC Class Codes: C08J 2439/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C08J 2475/04 Polyurethanes
• CPC Class Codes: C08J 7/042 with two or more layers, where at least one layer of a composition contains a polymer binder
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: C08J 7/056 Forming hydrophilic coatings
• CPC Class Codes: C08L 39/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C08L 75/00 Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: Y10S 528/904 Isocyanate polymer having stated hydrophilic or hydrophobic property
• CPC Class Codes: Y10S 623/924 Material characteristic
• CPC Class Codes: Y10T 428/1352 : Polymer or resin containing [i.e., natural or synthetic]
• CPC Class Codes: Y10T 428/1386 : Natural or synthetic rubber or rubber-like compound containing
• CPC Class Codes: Y10T 428/1393 : Multilayer [continuous layer]
• CPC Class Codes: Y10T 428/31536 : Including interfacial reaction product of adjacent layers
• CPC Class Codes: Y10T 428/31554 : Next to second layer of polyamidoester
• CPC Class Codes: Y10T 428/31565 : Next to polyester [polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 428/31569 : Next to natural rubber
• CPC Class Codes: Y10T 428/3158 : Halide monomer type [polyvinyl chloride, etc.]
• CPC Class Codes: Y10T 428/31587 : Hydrocarbon polymer [polyethylene, polybutadiene, etc.]
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31826 : Of natural rubber
• CPC Class Codes: Y10T 428/31931 : Polyene monomer-containing
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer

Abstract

A substrate is coated with a polyvinylpyrrolidone-polyurethane interpolymer. In the method, a polyisocyanate and a polyurethane in a solvent such as methyl ethyl ketone are applied to a substrate and the solvent evaporated. If the substrate is a polyurethane, only the polyisocyanate need be employed. Polyvinylpyrrolidone in a solvent is then applied to the treated substrate and the solvent evaporated. The invention is applied, for example, to a tube such as a catheter, a condom and a peristaltic pump tube.

Claims

1. An article having a very low coefficient of friction when wetting with a water base liquid or a lower aliphatic alcohol comprising:

a substrate to which conventional polyurethanes adhere, and

a cured polyvinylpyrollidone-polyurethane interpolymer coating on said substrate.

2. An article in accordance with claim 1 in which the substrate is of polyurethane.

3. An article in accordance with claim 1 in which the substrate is of a material other than polyurethane coated with a film of polyurethane.

4. An article in accordance with claim 1 having a polyvinylchloride substrate.

5. An article in accordance with claim 1 having a rubber latex substrate.

6. An article in accordance with claim 1 having a polyisoprene substrate.

7. An article in accordance with claim 1 having a polyester resin substrate.

8. A condom having a base material of polyurethane, and

a cured coating of a polyvinylpyrollidone-polyurethane interpolymer on the outside of said base material wherein said coated condom has a very low coefficient of friction when wetted with a water base liquid or a lower aliphatic alcohol.

9. A resilient tube which conventional polyurethanes adhere coated with a cured polyvinylpyrollidonepolyurethane interpolymer to provide the tube with a surface having a very low coefficient of friction when wetted with a water base liquid.

10. A device in accordance with claim 9 in which the tube is of rubber latex.

11. A catheter having a tubular body which conventional polyurethanes adhere, and a cured coating of polyvinylpyrollidone-polyurethane interpolymer on the outside of said body providing the outer surface of said body with a coating having a very low coefficient of friction when wetted with a water base liquid or a lower aliphatic alcohol.