Infection resistant thermoplastic polyurethane
First Claim
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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.2wherein R1 is a saturated or unsaturated hydrocarbon radical;
ai 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.
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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.
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Citations
4 Claims
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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.2wherein R1 is a saturated or unsaturated hydrocarbon radical;
ai 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. - View Dependent Claims (2, 3, 4)
- gloves, condoms, surgical clothes, finger stalls, aprons, bibs, caps and surgical operative fields formed by the process consisting essentially of;
Specification