Uhmwpe dip-coated tubes
AssigneeZeus Co., Ltd.
InventorsBhavya Singhi, John Richard Campanelli
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Abstract
The disclosure provides tubes comprising ultra high molecular weight poly(ethylene) (UHMWPE). Such tubes can have thin walls and be suitable for applications, e.g., as catheter liners. Methods for preparing such tubes include dip coating a core into a dispersion comprising the UHMWPE, where the dispersion advantageously further comprises an eco-friendly solvent and can optionally include one or more additional components (e.g., fillers and/or other polymers).
Claims20
A tube comprising Ultra High Molecular Weight Poly(Ethylene) (UHMWPE), the tube exhibiting:
- a. an average wall thickness of 0.004″ or less;
- and
- b. a tensile stress at break greater than 6 MPa;
- and
- c. a storage modulus of greater than 20 MPa at 37° C.
A coated core, comprising a continuous UHMWPE layer over a core, wherein the UHMWPE layer has an average thickness of about 0.002″ or less, an average tensile stress at break greater than 7 MPa and an average storage modulus of greater than 50 MPa at 37° C., when measured after removal from the core.
A tube comprising UHMWPE, prepared by dip coating a core in a dispersion comprising a UHMWPE resin and d-Limonene, wherein the dynamic viscosity of the dispersion is less than 3000 cP at 110° C.
A method for preparing a tube comprising UHMWPE, comprising dip coating a core in a dispersion comprising a UHMWPE resin and d-Limonene, wherein the dynamic viscosity of the dispersion is less than 3000 cP at 110° C.
Dependencies are inferred from the claim text.