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US 12,162,253 B2Granted
Thin wall lubricious polyethylene liners
AssigneeZeus Co., Ltd.
InventorsBhavya Singhi, John Richard Campanelli
Life of this patent
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Abstract
The disclosure provides tubes including a blend of two or more polyethylenes. For example, the blend can comprise at least 80% by weight of one or more of LLDPE, LDPE, MDPE, and HDPE, and no more than 20% by weight of UHMWPE. Such tubes can have low average wall thicknesses, e.g., 0.1 mm or less, rendering them suitable for use as catheter liners.
Claims22
A tube comprising a blend of three or more polyethylenes, the tube having an average wall thickness of 0.1 mm or less, and the tube comprising a blend of:
- a first polyethylene that is UHMWPE, in an amount of no more than 20 percent by weight;
- and
- a second polyethylene comprising at least one chemically modified polyethylene, in an amount of no more than 50 percent by weight;
- and
- a third polyethylene that is at least one polyethylene resin selected from the group consisting of LLDPE, LDPE, MDPE and HDPE, in an amount of no less than 30 percent by weight of the blend,
- wherein the tube exhibits a tensile modulus value of 550×106 Pa or greater at 23° C.
3 more elements
Dependencies are inferred from the claim text.