FOAM COMPOSITIONS AND USES THEREOF
First Claim
1. A component for an article of footwear, the component comprising the crosslinked reaction product of a first composition, wherein the first composition comprisesa block copolymer comprisinga first block and a third block, each independently comprising a linear or branched chain aliphatic polymer having a plurality of aromatic groups attached pendantly thereto,a second block located between the first block and the third block and comprising an aliphatic polymer having a plurality of aliphatic side chains attached thereto, anda plurality of first ethylenically unsaturated group present on one or more of the first block, second block, and third block;
- wherein the block copolymer comprises about 60% to about 90% of the second blocks by weight based upon the weight of the block copolymer;
an olefinic copolymer comprising a plurality of first olefinic segments and a plurality of second olefinic segments having a different chemical structure from the first olefinic segments;
one or more linking polymers, each linking polymer comprising one or more third olefinic segments; and
an ethylene-vinyl acetate (EVA) copolymer.wherein a sum of a ratio I, II, III, IV, and V is from about 1.00 to about 10.00;
wherein the ratio I is a ratio of a total parts by weight of the olefinic copolymers present in the composition to a total parts by weight of the block copolymer present in the composition;
wherein the ratio II is a ratio of a total parts by weight of the linking polymers present in the composition to a total parts by weight of the block copolymer present in the composition;
wherein the ratio III is ratio of a total parts by weight of the EVA copolymers present in the composition to a total parts by weight of the block copolymer present in the composition;
wherein the ratio IV is a ratio of the total parts by weight of the linking polymers present in the composition to a total parts by weight of the block copolymers present in the composition, andwherein the ratio V is a ratio of the total parts by weight of the one or more EVA copolymers present in the composition to a total parts by weight of the one or more olefinic copolymers present in the composition.
1 Assignment
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Accused Products
Abstract
Components for articles of footwear and athletic equipment are provided including a foam. A variety of foams and foam components and compositions for forming the foams are provided. In some aspects, the foams and components including the foams can have exceptionally high energy return while also having improved durability and softness. In particular, midsoles including the foams are provided for use in an article of footwear. Methods of making the compositions and foams are provided, as well as methods of making an article of footwear including one of the foam components. In some aspects, the foams and foam components can be made by injection molding or injection molding followed by compression molding.
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Citations
20 Claims
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1. A component for an article of footwear, the component comprising the crosslinked reaction product of a first composition, wherein the first composition comprises
a block copolymer comprising a first block and a third block, each independently comprising a linear or branched chain aliphatic polymer having a plurality of aromatic groups attached pendantly thereto, a second block located between the first block and the third block and comprising an aliphatic polymer having a plurality of aliphatic side chains attached thereto, and a plurality of first ethylenically unsaturated group present on one or more of the first block, second block, and third block; -
wherein the block copolymer comprises about 60% to about 90% of the second blocks by weight based upon the weight of the block copolymer; an olefinic copolymer comprising a plurality of first olefinic segments and a plurality of second olefinic segments having a different chemical structure from the first olefinic segments; one or more linking polymers, each linking polymer comprising one or more third olefinic segments; and an ethylene-vinyl acetate (EVA) copolymer. wherein a sum of a ratio I, II, III, IV, and V is from about 1.00 to about 10.00; wherein the ratio I is a ratio of a total parts by weight of the olefinic copolymers present in the composition to a total parts by weight of the block copolymer present in the composition; wherein the ratio II is a ratio of a total parts by weight of the linking polymers present in the composition to a total parts by weight of the block copolymer present in the composition; wherein the ratio III is ratio of a total parts by weight of the EVA copolymers present in the composition to a total parts by weight of the block copolymer present in the composition; wherein the ratio IV is a ratio of the total parts by weight of the linking polymers present in the composition to a total parts by weight of the block copolymers present in the composition, and wherein the ratio V is a ratio of the total parts by weight of the one or more EVA copolymers present in the composition to a total parts by weight of the one or more olefinic copolymers present in the composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An article of footwear comprising a component, wherein the component is made by a process comprising crosslinking and foaming a first composition, wherein the first composition comprises:
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a partially hydrogenated thermoplastic elastomeric block copolymer, the partially hydrogenated thermoplastic elastomeric block copolymer comprising; one or more A blocks comprising aromatic repeat units, one or more B blocks comprising aliphatic repeat units, and one or more first ethylenically unsaturated groups present on one or both of the aromatic repeat units and the aliphatic repeat units; an olefinic block copolymer, wherein the olefinic block copolymer is a copolymer of a first alpha-olefin and a second alpha-olefin different from the first alpha-olefin, and wherein the olefinic block copolymer comprising one or more second ethylenically unsaturated groups; an alpha-olefin linking polymer, wherein the alpha-olefin linking polymer comprises one or more aliphatic sidechains; and an ethylene-vinyl acetate copolymer; wherein a sum of a ratio I, II, III, IV, and V is from about 1.00 to about 10.00; wherein the ratio I is a ratio of a total parts by weight of the olefinic copolymers present in the composition to a total parts by weight of the partially hydrogenated thermoplastic elastomeric block copolymer present in the composition; wherein the ratio II is a ratio of a total parts by weight of the alpha-olefin linking polymers present in the composition to a total parts by weight of the partially hydrogenated thermoplastic elastomeric block copolymer present in the composition; wherein the ratio III is ratio of a total parts by weight of the ethylene-vinyl acetate copolymers present in the composition to a total parts by weight of the partially hydrogenated thermoplastic elastomeric block copolymer present in the composition; wherein the ratio IV is a ratio of the total parts by weight of the alpha-olefin linking polymers present in the composition to a total parts by weight of the partially hydrogenated thermoplastic elastomeric block copolymer present in the composition, and wherein the ratio V is a ratio of the total parts by weight of the one or more ethylene-vinyl acetate copolymers present in the composition to a total parts by weight of the one or more olefinic copolymers present in the composition. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification