4870 results about "Thermoplastic polyurethane" patented technology

A respirator system and hygroscopic hose used in the system is disclosed. The system includes a means for generating a flow of air, a hose connected to the generating means and a mask adapted to be secured to a patient. The mask connected to the hose such that air generated by the generating means passes through the hose to the mask. The hose is a hygroscopic hose made up of a thermoplastic polyurethane. The thermoplastic polyurethane permits water formed by the respiration of the patient to permeate through a sidewall of said hose from an inner surface of the hose to an outer surface of the hose. The sidewall of the hose does not permit air generated by the generating means to pass through the sidewall.

This invention relates to biocompatible, biodegradable thermoplastic polyurethane or polyurethane/ureas comprising isocyanate, polyol and a conventional chain extender and/or a chain extender having a hydrolysable linking group and their use in tissue engineering and repair applications, particularly as stents and stent coating.

A footwear adhesion system including a thermoplastic film, a sole component, and a footwear component. In one embodiment, the thermoplastic film is a thermoplastic polyurethane (“TPU”) film. The film is sandwiched between the sole component and the footwear component. The film may be activated, for example, by high frequency welding, to form a bond between the sole component and the footwear component without releasing the amount of volatile organic compound emissions typical with conventional adhesives. Use of the film reduces or eliminates the need for conventional environmentally unfriendly cement in footwear construction.

The invention provides a solid golf ball having a solid core and a cover layer that encases the core and has an outermost layer on an outside surface of which are formed a plurality of dimples. The solid core is formed of a rubber composition composed of 100 parts by weight of a base rubber that includes 60 to 100 parts by weight of a polybutadiene rubber having a cis-1,4 bond content of at least 60% and synthesized using a rare-earth catalyst, 0.1 to 5 parts by weight of an organosulfur compound, an unsaturated carboxylic acid or a metal salt thereof, and an inorganic filler. The solid core has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of 2.0 to 4.0 mm, and has a specific hardness distribution. The cover layer is formed by injection molding a single resin blend composed primarily of (A) a thermoplastic polyurethane and (B) a polyisocyanate compound, which resin blend contains a polyisocyanate compound in at least some portion of which all the isocyanate groups on the molecule remain in an unreacted state, and has a thickness of 0.5 to 2.5 mm, a Shore D hardness at the surface of 50 to 70. The golf ball has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of 2.0 to 3.8 mm. The solid golf ball is advantageous overall in competitive use.

A plunger cover for use with a syringe includes a sealing portion adapted to form a seal with the syringe and a central portion adapted to contact fluid within the syringe. The central portion can, for example, be more rigid than the sealing portion. The sealing portion and the central portion are connected in an overmolding process. The sealing portion can, for example, be formed from a thermoplastic elastomer or a thermoplastic polyurethane. The central portion can, for example, be formed from polypropylene, acrylonitrile butadiene styrene, polycarbonate or copolymers thereof.

Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligosilsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by reacting a polyol, a chain extender dihydroxyl-terminated polyhedral oligosilsesquioxane and a diisocyanate. The polyurethanes have multiple applications including for example, implants for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.

The invention provides a composition comprising at least one olefin multi-block interpolymer; at least one functionalized olefin-based polymer; and optionally at least one thermoplastic polyurethane. The invention also provides for articles prepared from the inventive compositions and for methods for making the same.

The present invention is directed towards a high-spin multi-layer golf ball which comprises a core with a Shore D hardness of preferably greater than about 30, and a mantle layer disposed between the core and a cover layer, wherein the mantle layer has a Shore D hardness greater than 60 and a resilience of greater than 34. Preferably, the mantle layer is comprised essentially of dynamically vulcanized thermoplastic elastomer, functionalized styrene-butadiene elastomer, thermoplastic polyurethane, metallocene polymer, thermoset materials or blends thereof. Preferably, the mantle layer has a specific gravity of greater than 1, and the core has a specific gravity of less than 1.2.

A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is interspersed between the two resinous layers and which contains photochromic compounds. The polyurethane layer is formed by curing a mixture of a solid thermoplastic polyurethane, at least one isocyanate prepolymer, at least one photochromic compound, and a stabilizing system.

Disclosed is a method for molding a foamed article, such as a midsole or outsole for footwear, in which a desired amount of thermoplastic polyurethane foam beads are placed in a compression mold in the shape of the article and the mold is brought to a peak temperature of from about 130° C. to about 180° C. over a period of from about 300 to about 1500 seconds, then cooled to from about 5° C. to about 80° C. over a period of from about 300 to about 1500 seconds within about 30 seconds after the peak temperature is reached. The foamed article made by the method has a density of from about 0.1 to about 0.45 g/cm³.

The method of the present invention for producing a urethane-based thermoplastic elastomer composition foam comprises the steps of:

• • adding and mixing 0.1 to 30 parts by weight of carbon dioxide (B) to 100 parts by weight of a urethane-based thermoplastic elastomer composition (A) in a molten state, wherein said urethane-based thermoplastic elastomer composition (A) comprises a urethane-based thermoplastic elastomer (A-1) and other thermoplastic elastomer (A-2) in an (A-1)/(A-2) ratio of 20/80 to 99/1 by weight, to form a molten urethane-based thermoplastic elastomer composition (C) which is in a state of a mixture of the urethane-based thermoplastic elastomer composition (A) and the carbon dioxide (B) (gas dissolving step); and
  • lowering a temperature of said molten urethane-based thermoplastic elastomer composition (C) (cooling step).

The present invention can produce the urethane-based thermoplastic elastomer foam of stable quality over a range from low foamed product to highly foamed product by adding a given quantity of carbon dioxide in the molten urethane-based thermoplastic elastomer quantitatively and stably. It can also produce the foam excellent in flexibility, thermal insulation and surface appearances. It is also excellent in safety, because of use of carbon dioxide in place of the common foaming agent of fluorochlorohydrocarbon or butane, thus causing no air pollution or destruction of the ozone layer.

A ladder strap (150) is made by joining—for example, by co-molding—a first, relatively supple material, defining a lower strap portion (155) with a second, relatively hard material defining an upper strap portion (165). The teeth (167) of the ladder strap are comprises substantially of the harder, second material. In a preferred embodiment, the first and second materials are thermoplastic urethanes, and the co-molding is done using an injection molding process. The co-molding process may be accomplished with co-injection, wherein the two materials are injected at about the same time, or the first material may be injected into a first mold cavity and allowed to partially set, after which the cavity is modified to accommodate the second material.

The invention discloses a low-smoke halogen-free flame-retarding thermoplastic elastomer alloy used for soft wires and a preparation method of the alloy, which is characterized in that: the material comprises thermoplastic polyurethane elastomer, thermoplastic styrene elastomer, compatilizer, phosphorus-nitrogen compound flame retardant, flame-retarding potentiating agent, lubricant, antioxidant and colorant; the weight ratio of the thermoplastic polyurethane elastomer, the thermoplastic styrene elastomer, the compatilizer, the phosphor-nitrogen compound flame retardant, the flame-retarding potentiating agent, the lubricant, the antioxidant and the colorant is 40 to 55 : 5 to 25 : 5 to 10 : 20 to 25 : 3 to 10 : 1.5 : 0.25 : 0.25; the preparation method is that the all components are evenly mixed in a high-speed mixer, and then extruded, drew and granulated at 170 to 210 degree centigrade, and then a low-smoke halogen-free flame-retarding thermoplastic elastomer alloy used for soft wires is obtained. The low-smoke halogen-free flame-retarding thermoplastic elastomer alloy used for soft wires has the advantages of achieving distinct flame-retarding effect at a small quantity of flame retardant dosage, satisfying the flame-retarding requirement of low-voltage wires, adjusting the Shore durometer number of the material between 80 to 95, good pliability, high physical mechanical property and according with the halogen-free and environment-friendly requirement.

Process for the preparation of foamed thermoplastic polyurethanes characterized in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres.

An out-sole assembly for a golf shoe. The outsole assembly includes an internal base member composed of EVA, an inner frame member composed thermoplastic polyurethane subjected to an isocyanate solution, an external base member composed of a thermoplastic polyurethane, a dual looping frame composed of a thermoplastic polyurethane, and a plurality of spike members.

A sports shoe includes an upper wherein a majority by weight of the upper is made from a thermoplastic base material and a sole wherein a majority by weight of the sole is made from the same thermoplastic base material. The sole and the upper are individually fabricated and joined to each other. The thermoplastic base material includes at least one of the following materials: thermoplastic polyurethane TPU, polyamide PA, polyethylene terephthalate PET, or polybutylene terephthalate PBT.

The adhesion between a low surface energy (i.e., nonpolar) material, e.g., a polyolefin such as polyethylene, and a high surface energy (i.e., polar) material, e.g., a polyester, polyurethane, polycarbonate or polylactic acid, is promoted by blending with the nonpolar material typically from 15 to less than 50 wt % of a diol-based thermoplastic polyurethane (d-TPU), e.g., a polydiene diol-based TPU, based on the combined weight of the nonpolar material and the d-TPU. The promoted adhesion allows for the effective painting, printing, over-molding or HF-welding of a nonpolar substrate, e.g., a polyolefin film, with a polar coating, e.g., a paint, ink, etc. Aqueous dispersions can also be made from the blend of nonpolar material and d-TPU.

In a multi-piece solid golf ball comprising a solid core and a cover of at least two layers, one layer, preferably an inner layer, of the cover is formed mainly of a thermoplastic polyurethane elastomer having a JIS A hardness of 60-98 and a resilience of at least 40%. The golf ball is improved in spin properties, flight performance, feeling, durability, and mass-scale productivity.

A cover stock composed mainly of a heated mixture of a thermoplastic polyurethane elastomer and a polyolefin oligomer or polyolefin which has been modified with functional groups is suitable for the manufacture of golf balls. The cover made of the stock has improved scuff resistance.

A multi-piece solid golf ball has a solid core obtained by molding and vulcanizing a rubber composition which includes (A) a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, (B) an unsaturated carboxylic acid and/or a metal salt thereof, (C) an organic sulfur compound, (D) an inorganic filler and (E) an organic peroxide. The core is enclosed within a mantle of one or more layer which is made primarily of a thermoplastic resin and has a Durometer D hardness of 30 to 70. The mantle is enclosed within a cover which is made primarily of a thermoplastic polyurethane and which has a Durometer D hardness of 40 to 60 that is lower than the Durometer D hardness of the outermost layer of the mantle. This construction provides the golf ball with an outstanding rebound.

The invention provides a ceramic bovine flame retardant polymer composite material based on polyolefin or a thermoplastic polyurethane elastomer. The ceramic bovine flame retardant polymer composite material is prepared from the following components in parts by weight: 30-40 parts of polyolefin resin or the thermoplastic polyurethane elastomer, 25-45 parts of a ceramic forming filler, 20-30 parts of a halogen-free flame retardant, 1-5 parts of a flame-retardant synergist, 1-3 parts of a plasticizer, 0.5-2 parts of an antioxidant and 0.02-0.15 part of a crosslinking agent, wherein the ceramic forming filler is prepared from the following components including low softening point glass powder and a silicate mineral filler. The invention also provides application of the ceramic bovine flame retardant polymer composite material in the field of cables. According to the ceramic bovine flame retardant polymer composite material disclosed by the invention, a dense ceramic bovine product can be formed within a range from 600 DEG C to 1000 DEG C, and the formed ceramic bovine product is good in high-temperature strength and flame retardancy and is also good in mechanical properties under room temperature.