A polymer composition comprising a dielectric material distributed within a polymer matrix is provided. The dielectric material has a volume resistivity of from about 0.1 ohm-cm to about 1 × 10.sup.12 ohm-cm. wherein the polymer matrix contains at least one thermotropic liquid crystalline polymer, and further wherein the polymer composition exhibits a dielectric constant of about 4 or more and a dissipation factor of about 0.3 or less, as determined at a frequency of 2 GHz.

The present disclosure relates to a liquid crystal polyester resin composition comprising a liquid crystal polyester resin with a low dielectric constant and a low dielectric loss containing a naphthoic acid monomer as a main skeleton and a hydroxybenzoic acid; a glass bubble having a pressure resistance of 12,000 psi or more; and an inorganic filler such as mica. The present disclosure provides a liquid crystal polyester resin composition suitable for 5G communication materials, which can achieve low dielectric loss characteristics, and at the same time, the addition of glass bubbles with excellent pressure resistance can achieve a low dielectric constant and a low dielectric loss through the maintenance of the hollow body of the glass bubbles even after melt extrusion.

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.

An article is prepared by injection molding, wherein the article is formed from a hydrophilic thermoplastic polyurethane composition, wherein the thermoplastic polyurethane composition comprises the reaction product of a hydroxyl terminated polyol intermediate component, an aliphatic isocyanate component, and, optionally, a chain extender component. For injection molding, the hydrophilic thermoplastic polyurethane has a crystallization temperature measured by dynamic scanning calorimetry of at least 75° C.

The present disclosure relates to a method for crystallizing highly functional polymer by post-processing and crystalline polymer produced by the method, and more specifically, is characterized by producing crystalline polyaryletherketone (PAEK) by heat treating polyaryletherketone (PAEK) provided in the form of pellets or powders at a temperature of glass transition temperature (Tg) to melting point (Tm).

The present disclosure relates to crystallizable shrinkable films and thermoformable films or sheets comprising amorphous polyester compositions which comprise residues of terephthalic acid, neopentyl glycol (NRG), 1,4-cyclohexanedimethanol CHDM), ethylene glycol (EG), and diethylene glycol (DEG), in certain compositional ranges having certain advantages and improved properties. The present disclosure also relates to crystallizable shrinkable films and thermoformable film(s) and/or sheet(s) comprising polyester compositions which comprise residues of recycled terephthalic acid, recycled neopentyl glycol (NRG), recycled 1,4-cyclohexanedimethanol (CHDM), recycled ethylene glycol (EG), and recycled diethylene glycol (DEG), in certain compositional ranges having certain advantages and improved properties.

The invention relates to formulations of aqueous dispersion adhesives on the basis of aqueous polyurethane or polyurethane-urea dispersions and the use of the adhesive formulations for bonding foam substrates according to the spray coagulation method.

The present invention relates to the process for manufacturing specialty polyesters & copolyesters from recycled Bis 2-Hydroxyethyl terephthalate (rBHET) derived from Polyethylene terephthalate (PET) recycled from PET scraps or waste. The polyesters/co-polyesters thus obtained are clean and of high quality which can be used for all applications but not limited to textiles, packaging, engineering and industry.

A phase difference film formed of a resin containing a polymer having crystallizability, wherein: a coefficient of variation CV(Re) of an in-plane retardation of the phase difference film at a measurement wavelength of 590 nm is 1.0% or less.

Provided is an LCP extruded film that can increase process tolerance in manufacture of a flexible laminate, without excessively impairing the basic performance of the liquid crystal polymer. Provided are an LCP extruded film and the like that allow a flexible laminate having high peel strength to a metal foil to be easily obtained under mild manufacturing conditions as compared with the prior art. An LCP extruded film 11 comprising: an aromatic polyester-based liquid crystal polymer at least having at least one selected from the group consisting of para-hydroxybenzoic acid, terephthalic acid, isophthalic acid, 6-naphthalenedicarboxylic acid, 4,4′-biphenol, bisphenol A, hydroquinone, 4,4-dihydroxybiphenol, ethylene terephthalate and derivatives thereof, and 6-hydroxy-2-naphthoic acid and derivatives thereof, as monomer components, the LCP extruded film having a dissolution rate in pentafluorophenol at 60° C. of 25% or more.