Abstract: Deoxybenzoin-phosphonate and other copolymer compounds, compositions and related methods.

Abstract: Deoxybenzoin-phosphonate and other copolymer compounds, compositions and related methods.

Abstract: Deoxybenzoin-phosphonate and other copolymer compounds, compositions and related methods.

Abstract: The invention provides new methods for recycling thermoset materials such as natural rubbers, synthetic rubbers, silicone rubbers, and other elastomers and cross-linked polymers (e.g., isoprene rubbers; butyl rubbers; ethylene-propylene-diene-rubbers, “EPDM”; nitrile, or acrylonitrile butadiene rubbers, “NBR”; styrene-butadiene rubbers, “SBR”; hard rubbers such as EBONITE®; mixtures of vulcanized rubbers from discarded tires). The invention is based on the discovery that by combining powdered or particulate thermoset materials with lubricants such as aromatic or paraffinic rubber processing oils or volatile solvents, the thermoset materials can be recycled under moderate temperature and pressure conditions to rapidly produce materials having physical properties comparable to those of virgin thermoset materials. The resulting materials can, for example, be extruded or compaction molded into new shapes such as panels.

Abstract: The invention provides new methods for recycling thermoset materials such as natural rubbers, synthetic rubbers, silicone rubbers, and other elastomers and cross-linked polymers (e.g., isoprene rubbers; butyl rubbers; ethylene-propylene-diene rubbers, “EPDM”; nitrile, or acrylonitrile butadiene rubbers, “NBR”; styrene-butadiene rubbers, “SBR”; hard rubbers such as EBONITE®; mixtures of vulcanized rubbers from discarded tires). The invention is based on the discovery that by combining powdered or particulate thermoset materials with lubricants such as aromatic or paraffinic rubber processing oils or volatile solvents, the thermoset materials can be recycled under moderate temperature and pressure conditions to rapidly produce materials having physical properties comparable to those of virgin thermoset materials. The resulting materials can, for example, be extruded or compaction molded into new shapes such as panels.

Abstract: A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0.4 GPa and an elastic modulus of at least 5 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0.2 to 3.times.10.sup.6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric.

Abstract: A method of making a protective coating material wherein there is provided a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature. A fabric of polymeric fibers having a melting temperature higher than the melting temperature of the matrix is placed in the matrix. The fibers are thermoplastic and have a strength of at least about 0.5 GPa (70,000 psi) and an elastic (Young's) modulus of at least about 25 GPa (3.6.times.10.sup.6 psi) and said matrix has an elastic modulus in the range from about 0.2 to about 3.times.10.sup.6 psi. A pressure of from about 1000 to about 2000 psi is applied to the fabric disposed in the matrix and then the temperature is raised to about and at least the melting temperature of the fabric for about the minimum time required to cause consolidation of the fabric and the matrix. The consolidated fabric and matrix are then rapidly cooled to a temperature below the melting temperature of the fabric.

Abstract: A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0.4 GPa and an elastic modulus of at least 5 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0.2 to 3.times.10.sup.6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric.

Abstract: A protective, impact resistant material and method which includes a fabric of thermoplastic polymeric fibers having a strength of at least 0.5 GPa and an elastic modulus of at least 25 GPa and a matrix of polymeric material disposed in the interstices between the fibers having an elastic modulus of 0.2 to 3.times.10.sup.6 psi. The polymeric fibers can be gel spun, polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric.

Abstract: A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0.5 GPa and an elastic modulus of at least 25 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0.2 to 3.times.10.sup.6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric.

Abstract: Polyester fibers comprising a poly(alkylene) terephthalate matrix containing either random or block copolyesters which are liquid crystalline and which contain: (a) alkoxy-substituted para-phenylene terephthalate groups (i.e., derived from an analogously substituted hydroquinone reagent); and (b) alkylene-terephthalate groups (e.g., where the alkylene moiety contains 2 to 10 carbon atoms).

Abstract: A process for fabricating a composite in the form of a network of microfibrils which includes interpenetrating the microfibrils with a matrix material to form a composite which includes two continuous interpenetrating phases, a matrix-material phase and a microfibrillar-reinforcing-network phase.

Abstract: A process for fabricating a composite in the form of a network of microfibrils which includes interpenetrating the microfibrils with a matrix material to form a composite which includes two continuous interpenetrating phases, a matrix-material phase and a microfibrillar-reinforcing-network phase. There is disclosed composites in the form of a fiber and in the form of a film.

Abstract: A deformation calorimeter that serves to deform a sample material whose temperature changes as a function of the deformation. The temperature change causes heat to flow into the material or out, depending on the character of the deformation, to cause a pressure change in a gas in and around the material. An analyzing scheme is employed to relate the pressure change to the amount of heat evolved during sample deformation.

Abstract: An energy absorber in which impact energy is converted into heat and stored elastic energy in a multitude of individual elastomeric fibers or the like which are disposed individually in tension about a plurality of mechanical members that are moved by the impact to effect distortion of the fibers or the like and provide energy dissipation and containment.