Infection resistant thermoplastic polyurethane

• US 5,780,043 A
• Filed: 10/18/1995
• Issued: 07/14/1998
• Est. Priority Date: 02/22/1990
• Status: Expired due to Term

• Current Assignee: Allegiance Corporation (Cardinal Health, Inc.)
• Original Assignee: Allegiance Corporation (Cardinal Health, Inc.)
• Inventors: Delmotte, Yves, Kersten, Jean, Dane, Greg
• Primary Examiner(s): Levy, Neil S.
• Application Number:
  US08/544,915
• Time in Patent Office: 1,000 Days
• Field of Search: 424/404, 424/405, 424/408, 424/409, 424/430, 424/486, 604/346, 604/347
• US Class Current: 424/404
• CPC Class Codes: A61L 31/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L31/041 takes precedence
• CPC Class Codes: C08K 5/0008 Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

The present invention relates to infection resistant polyurethane having the infection resistant agents incorporated into the matrix of the thermoplastic polyurethane resin. This agent acts as a pool of infection resistant material. This infection resistant material can be used to make gloves and condoms.

Claims

1. An infection resistant thermoplastic polyurethane device selected from the group consisting of:

gloves, condoms, surgical clothes, finger stalls, aprons, bibs, caps and surgical operative fields formed by the process consisting essentially of;

a) mixing a non-ionic surfactant with a thermoplastic polyurethane polymer and a plasticizer having a molecular weight greater than 300, to form a mixture, the non-ionic surfactant having the formula;

space="preserve" listing-type="equation">R.sub.1 --O--((CH.sub.2)a.sub.i --O)n-R.sub.2

wherein R₁ is a saturated or unsaturated hydrocarbon radical;

a_i is for I=n, an integer greater or equal to 2;

R₂ is an organic radical selected from the group consisting of C--H and C--O and n is an integer selected so that the Hydrophilic Lipophilic Balance of the surfactant is between 12 and 20;

b) combining the mixture with a sufficient amount of an organic solvent selected from the group consisting of tetrahydrofuran and 1,4 dioxane to form a one-phase solution; and

c) forming the thermoplastic polyurethane device.

2. The infection resistant device of claim 1 wherein the surfactant comprises at least 1% of the polymer by weight.

3. The infection resistant device of claim 1 wherein the non-ionic surfactant is (α

-(nonylphenyl)-w-hydroxypoly (oxy-1,1 ethanediyl

     1)).

4. The infection resistant device of claim 1 wherein the plasticizer is di-isononylphthalate.