Polyethylene materials
AssigneeZimmer, Inc.
InventorsMing C. Shen, Werner Schneider
Life of this patent
Estimating the term…
Abstract
Certain embodiments described herein are directed to polymer compositions including a base material, a secondary material and an antioxidant. The composition also includes crystalline regions and amorphous regions with the crystalline regions comprising at least 62% by volume of the composition. In some embodiments, the base material is an ultra high molecular weight polyethylene material and the secondary material is a polyethylene material that is different than the base material.
Claims20
A composition comprising an ultra high molecular weight polyethylene material, a first antioxidant and a cross-linked polymeric material that has a different average molecular weight than an average molecular weight of the ultra high molecular weight polyethylene material, in which the composition comprises crystalline and amorphous regions from each of a cross-linked form of the ultra high molecular weight polyethylene material and the cross-linked polymeric material, and wherein the crystalline regions together comprise at least 62% by volume of the composition.
A composition comprising an ultra high molecular weight polyethylene material, a first antioxidant and a cross-linked polymeric material that has a different average particle size than an average particle size of the ultra high molecular weight polyethylene material, in which the composition comprises crystalline and amorphous regions from each of a cross-linked form of the ultra high molecular weight polyethylene material and the cross-linked polymeric material, and wherein the crystalline regions together comprise at least 62% by volume of the composition.
A method comprising:
- combining an ultra high molecular weight polyethylene material with an antioxidant and a cross-linked polymeric material that is different than the ultra high molecular weight polyethylene material to provide a blend;
- and
- cross-linking the blend to provide a composition comprising crystalline and amorphous regions from each of cross-linked ultra high molecular weight polyethylene material and the cross-linked polymeric material, and wherein the crystalline regions together comprise at least 62% by volume of the composition.
Dependencies are inferred from the claim text.