Rheology-modified, additive-containing ethylenic polymer compositions are prepared in a continuously operated extruder comprising first, second and third zones by a process comprising the steps of: mixing in the second zone of the extruder an ethylenic polymer and a high-temperature decomposing peroxide at a temperature such that the half-life of the peroxide is equal to or greater than one minute and for a sufficient period of time to modify the rheology of the ethylenic polymer to produce a rheology-modified, melted ethylenic polymer for transfer to the third zone of the extruder; and adding to the third zone one or more additives to the rheology-modified, melted ethylenic polymer to produce the rheology-modified, additive-containing ethylenic polymer.

Low permeation fuel hose is provided comprising an outer cover layer prepared from a composition comprising a polyvinyl chloride (PVC), a thermoplastic copolyester elastomer and, optionally, a thermoplastic polyurethane (TPU), wherein the hose exhibits improved low and high temperature performance compared to conventional fuel hoses having an outer layer consisting of industrial grade PVC.

A system has a first fluid dispenser containing a biocompatible polymer, a second fluid dispenser containing a biocompatible curing agent selected to form a highly viscous mixture with the biocompatible polymer, a pair of diverging surfaces having a contact point, the first fluid dispenser and the second fluid dispenser positioned to dispense a first fluid and a second fluid at the contact point, and an actuator connected to the first fluid dispenser, the second fluid dispenser and the pair of diverging surfaces, the actuator configured to cause the first fluid dispenser and the second fluid dispenser to dispense the fluids at the contact point, and to cause the diverging surfaces to move through the contact point and then diverge, causing the mixture to form filaments until the filaments break up to form a spray. A method of forming a spray includes dispensing a biocompatible polymer solution and a curing agent onto a pair of diverging surfaces to form a mixture, moving the two diverging surfaces counter to each other to cause the mixture to form filaments between the two diverging surfaces as the diverging surfaces move away from each other, moving the two diverging surfaces further counter to each other to cause the filaments burst into droplets, and directing the droplets onto a surface. A composition of matter comprising a biocompatible polymer and a biocompatible curing agent.

Crumb rubber obtained from recycled tires is subjected to a process involving photodissociation to break a sulfur bond, sulfur-sulfur and/or sulfur-carbon bonds. The process utilizes a component that generates photonic energy upon being subjected to a compressing force (e.g., pressure). The photonic energy is bandwidth resonant with the sulfur-sulfur and/or sulfur-carbon bond, causing the bond to break apart. The resulting rubber is suitable for use in applications typically utilizing virgin rubber, such as new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

A method for producing a polycondensate melt from a primary material and a secondary material from materials of substantially the same type is provided. A first partial melt stream of the primary material and a second partial melt stream of the secondary material are provided, and a measured value of the intrinsic viscosity of both partial melt streams is determined, and a difference value is calculated from the measured values. Based on the difference value, the intrinsic viscosity of the second partial melt stream is increased, reduced or maintained unchangedly by using a first melt treatment device. Subsequently, the two partial melt streams are combined into a common melt stream.

A cellulose-fiber-dispersing polyolefin resin composite material, containing a polyolefin resin containing a polypropylene resin, and a cellulose fiber dispersed in the polyolefin resin, in which a proportion of the cellulose fiber is 1 mass part or more and 70 mass parts or less in a total content of 100 mass parts of the polyolefin resin and the cellulose fiber, and the water absorption ratio satisfies the following Formula: (Water absorption ratio [%])<(Cellulose effective mass ratio [%]).sup.2×0.01; a pellet and a formed body using this composite material; and a production method for this composite material.

A method includes feeding a heated polymer additive at a first temperature into a continuous mixer at a first feed rate. The method includes feeding a heated abrasive solid material at a second temperature into the continuous mixer at a second feed rate. The heated abrasive solid material and the heated polymer additive are mixed in the continuous mixer to form a first mixture.

Some implementations herein described improvements to concrete products and processes for producing concrete products that may provide a positive environmental impact and that can be stronger relative to the percent of cement used. Particular examples include improvements to zero-slump to near-zero-slump concrete mixture design, material storage and handling, batching, mixing, sequencing and curing processes, as well as forming and curing techniques.

Some implementations herein described improvements to concrete products and processes for producing concrete products that may provide a positive environmental impact and that can be stronger relative to the percent of cement used. Particular examples include improvements to zero-slump to near-zero-slump concrete mixture design, material storage and handling, batching, mixing, sequencing and curing processes, as well as forming and curing techniques.

The present invention relates to a thermoplastic resin composition, a method of preparing the same and a molded article including the same. More particularly, the thermoplastic resin composition includes a polycarbonate resin having a limited melt flow index, a polyorganosiloxane-polycarbonate resin, a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound copolymer, a polyester resin and an epoxy group-containing copolymer in predetermined weight ratios.