6results about "Monocomponent polycarbonates artificial filament" patented technology

Various embodiments may relate to a method of forming a fiber. The method may include forming a tube using a thermal drawing process. The method may also include providing one or more mixtures into the tube. The method may further include freezing the one or more mixtures within the tube using a freeze-casting process such that a first plurality of walls formed by MXene sheets and a second plurality of walls formed by nanomaterials, the MXene sheets and the nanomaterials comprised in the one or more mixtures, define a plurality of spaces within the tube, thereby forming the fiber.

Provided are a polycarbonate fiber having a specific orientation degree and / or a specific birefringence value, a fiber structure as well as a resin composite body. The polycarbonate fiber may have an orientation degree (ft) of lower than 0.70, the orientation degree (ft) being defined by the following formula: ft=1−(1.0 / C)2, C: obtained sonic velocity (km / sec), and may have a birefringence value of 0.04 or lower. The polycarbonate fiber may comprise a polycarbonate resin having a number-average molecular weight (Mn) of from 12000 to 40000 and / or a weight-average molecular weight (Mw) of from 25000 to 80000.

There has been a demand for resin compositions that are highly biodegradable and have excellent properties such as thermal stability and hydrolysis resistance.　Known biodegradable resins have not necessarily been recognized as having these excellent properties. For example, no resin has been developed that is not only biodegradable but also has excellent properties such as thermal stability, hydrolysis resistance, and strength.　Therefore, there is a demand for resins that are highly biodegradable and have excellent properties such as thermal stability, hydrolysis resistance, and strength.　The abovementioned problem is solved by the following polyester carbonate.　A polyester carbonate comprising: a polyester having structural units derived from an aliphatic diol and an aliphatic dicarboxylic acid; and a structural unit derived from a carbonic acid diester, the acid value of the polyester carbonate being 0.01-0.24 mg KOH / g, and the amount of OH terminals of the polyester carbonate being 10-500 ppm.

An exemplary optical fiber cable includes a cable jacket formed of a first polymer composition, and a cable core that includes a plurality of optical fibers. The cable core can have any of various constructions, and the optical fibers can be disposed in various ways such as, but not limited to, loose fibers in buffer tubes (i.e., loose tube construction), planar optical fiber ribbons, or rollable optical fiber ribbons (e.g., intermittently-bonded optical fiber ribbons). To aid in jetting performance, the optical fiber cable further includes a plurality of high-modulus polymeric filaments that are embedded in and coextruded with the cable jacket.

A demand has existed for a resin that excels in various properties including biodegradability and thermal stability. Moreover, a need has also existed for an efficient method for producing a biodegradable resin.　The above problems are solved by the following polyester carbonate resin and method for producing a branched polyester carbonate.　That is, the present invention provides a branched polyester carbonate resin, the polyester carbonate resin containing an aliphatic diol, an aliphatic dicarboxylic acid, a triol compound, and a constituent unit derived from a diester carbonate, wherein a terminal OH amount and a phenyl terminal amount of the polyester carbonate resin are adjusted within prescribed ranges described in the description of the present application. The present invention also provides a method for producing the branched polyester carbonate (PEC), wherein, in a polymerization step, the OH amount contained in the triol compound as a monomer and the amount of the diester carbonate satisfy a prescribed relationship described in the description of the present application.

Polymers and formulated compositions are designed to have properties that allow their effective use in additive manufacturing processes, particularly for preparing articles wherein molten monofilament polymer is laid down on top of a previously deposited line of molten monofilament polymer.