WATERBORNE POLYISOCYANATE COMPOSITION THAT PROVIDES A LOW FRICTION COATING
First Claim
1. A chemical composition that provides a low friction coating onto an object, comprising:
- a waterborne polyisocyanate;
a chemical substrate;
one or more materials that form one or more hydrogels mixed with said polyisocynate; and
one or more crosslinkers that link said hydrogels, said polyisocynate and said substrate together to form said composition.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention is a chemical composition that provides a low friction coating and a low sliding coefficient of friction onto a plastic or metal working part that includes a waterborne polyisocyanate such as ureas, urethanes or tetramethylxylene diisocyanates (TMXDI) in the composition structure and a plurality of cross linkable functional groups that include carboxyl groups and hydroxyl groups that are added utilizing plasma or chemical grafting and etching and a plastic or metal chemical substrate. The composition also includes one or more materials that are single linked or multiple linked hydrogels such as polyvinylpyrrolidone (PVP), polyethylene glycol (PEG) or polyvinyl alcohol (PVA) mixed with the polyisocynate and one or more crosslinkers such as aziridines or carbodiimides that link the hydrogels, the polyisocynate and the substrate together to form the composition.
7 Citations
20 Claims
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1. A chemical composition that provides a low friction coating onto an object, comprising:
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a waterborne polyisocyanate; a chemical substrate; one or more materials that form one or more hydrogels mixed with said polyisocynate; and one or more crosslinkers that link said hydrogels, said polyisocynate and said substrate together to form said composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A chemical composition that provides a low friction coating and a low sliding coefficient of friction onto a working part, comprising:
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a waterborne polyisocyanate selected from the group consisting of ureas, urethanes, esters, ethers or tetramethylxylene diisocyanates (TMXDI) in said composition structure and a plurality of cross linkable functional groups that include carboxyl groups and hydroxyl groups; a plastic or metal chemical substrate; one or more materials that form one or more hydrogels that are single linked or multiple linked mixed with said polyisocynate; and one or more crosslinkers selected from the group consisting of aziridines or carbodiimides that link said hydrogels, said polyisocynate and said substrate together to form said composition, wherein said composition utilizes two or more said crosslinkers to adjust said composition'"'"'s adhesion, cohesion and friction. - View Dependent Claims (13, 14, 15, 16)
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17. A chemical composition that provides a low friction coating and a low sliding coefficient of friction onto a plastic or metal working part that includes a medical device used for insertion or implementation such as a knee replacement joint, a catheter, a stent, a delivery system, or an iol injector, comprising:
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a waterborne polyisocyanate selected from the group consisting of ureas, urethanes, esters, ethers or tetramethylxylene diisocyanates (TMXDI) in said composition structure and a plurality of cross linkable functional groups that include carboxyl groups and hydroxyl groups that are added utilizing plasma or chemical grafting and etching, wherein said plasma grafting and etching utilizes plasma gases that include carbon dioxide, ethyl alcohol and acrylic acid; a plastic or metal chemical substrate; one or more materials that are single linked or multiple linked hydrogels selected from the group consisting of polyvinylpyrrolidone (PVP), polyethylene glycol (PEG) or polyvinyl alcohol (PVA) mixed with said polyisocynate; and one or more crosslinkers selected from the group consisting aziridines or carbodiimides that link said hydrogels, said polyisocyanate and said substrate together to form said composition. - View Dependent Claims (18, 19, 20)
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Specification