The present invention generally relates to a system and method for using a volatile organic compound (VOC) free low radiant flux LED UV curable composition, and more particularly to unique and novel uses of the composition such as one or two or more of a fire retardant, clear coat, composite material, resin, top coat, improved holdout coating, a sealant coat, and combinations of the same.

The invention relates to a method for producing a fiber-reinforced, polymeric continuous profiled element (1), wherein the continuous profiled element (1), having preferably at least one hollow chamber (2, 2), comprises a core profile (10) which can be produced by means of a pultrusion process, and wherein during the pultrusion process at least one continuous strand having reinforcement fibers (5) is integrated into the polymer matrix (4) of the core profile (10). According to the invention, the curing of the core profile (10) is carried out by means of a dual-cure method.

The present disclosure relates to a polysulfide copolymer particle and a method of preparing the polysulfide copolymer particle.

The disclosure relates to a high molecular weight polyphenylene sulfide resin and a preparation method and application thereof. The disclosure uses a sulfur-containing compound and a halogenated aromatic compound as raw materials, an alkaline compound and a fatty acid as polycondensation aids to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained. Then, the primary polyphenylene sulfide reacts with a chain extender at a high temperature to form a high molecular weight polyphenylene sulfide resin. The preparation method of the disclosure has the advantages of high yield, low cost, and is capable of selectively and controllably preparing polyphenylene sulfide resins with different melt viscosities and molecular weights, and the obtained polyphenylene sulfide resins have excellent heat resistance. The linear high molecular weight polyphenylene sulfide resin with high thermal stability obtained by the disclosure can be used for producing plates, pipes and rods, can be mechanically processed like metals, such as cutting, grinding, polishing, drilling, and can be used to produce fibers, membranes, films, and especially are applicable to automotive parts, electronic/electrical equipment, chemical and machinery industry.

A molded product having both small specific gravity and high stiffness and also suffering few sink marks is described along with a method for the production thereof, where the molded product includes a porous body (A) integrated with an injection molded body (B), the porous body (A) having an apparent density of 0.05 to 0.8 g/cm.sup.3, the average thickness (tA) of the porous body (A) and the average thickness (tB) of the injection molded body (B) satisfying the relation tA3tB, and the injection molded body (B) covering at least one face of the porous body (A).

There is provided a method for efficiently recovering amide-based compounds such as N-methyl-2-pyrrolidone from a waste liquid containing amide-based compounds such as N-methyl-2-pyrrolidone generated, for example, in a production process of polyarylene sulfide.

The present invention relates to a polyarylene sulfide which has more improved compatibility with other polymer materials or fillers, and a method for preparing the same. The polyarylene sulfide is characterized in that at least part of end groups of the main chain of the polyarylene sulfide is hydroxyl group (OH), the polyarylene sulfide contains iodine bonded to its main chain and free iodine, and the content of iodine bonded to the main chain and free iodine is 10 to 10,000 ppmw.

A polyarylene sulfide resin particulate has a mean particle diameter from more than 1 m to 100 the uniformity is 4 or less, the melt viscosity measured at temperature of 300 C. and shear rate of 1216 sec.sup.1 is 150 to 500 Pa.Math.s, and the recrystallization temperature, defined as temperature of the heat generation peak at the time of crystallization when cooled from 340 C. to 50 C. at 20 C./min using a differential scanning calorimeter, is 150 to 210 C. The polyarylene sulfide resin particulate is suitable as a material powder for producing a three-dimensional molding by a powder sintering three-dimensional printer can be provided efficiently.

Disclosed are particles that have an exterior surface coated with a thin polymeric coating, such as a coating that includes a sulfur-containing polymer. Also disclosed are compositions, such as fuel-resistant sealant and coating compositions, which include such particles. Aerospace vehicles having an aperture at least partially sealed with a sealant deposited from such a sealant composition are also disclosed.

The present invention relates to a polyarylene sulfide which has more improved compatibility with other polymer materials or fillers, and a method for preparing the same. The polyarylene sulfide is characterized in that at least part of end groups of the main chain of the polyarylene sulfide is hydroxyl group (OH), the polyarylene sulfide contains iodine bonded to its main chain and free iodine, and the content of iodine bonded to the main chain and free iodine is 10 to 10,000 ppmw.