Fiber-reinforced terephthalate-co-4,4-bibenzoate copolyester behaves like a liquid crystalline polymer, providing fast crystallization, short cycling times, high T.sub.g and T.sub.m, high strength and stiffness, while the viscosity is unexpectedly reduced at a low fiber loading ratio. In an injection molding process, the viscosity of the fiber reinforced copolyester at low fiber loading is reduced by increasing the fiber loading.

Disclosed is a sealant film including at least a layer formed of a polyester as a superficial layer, in which the polyester contains 20 to 50 mol % of a 2,5-furandicarboxylic acid unit, 18 to 49.5 mol % of at least one diol unit selected from the group consisting of an ethylene glycol unit, a 1,3-propanediol unit, and a 1,4-butanediol unit, and 0.5 to 2.5 mol % of a diethylene glycol unit, the sealant film has a crystallinity of less than 14%, and the sealant film is a stretched film that exhibits a shrinkage ratio of 6% or more in a maximum shrinkage direction upon being allowed to stand at 125 C. for 20 seconds. This provides a sealant film superior in mechanical properties, especially tensile elongation, and also superior in heat sealability, non-adsorptivity, and gas barrier properties.

A battery case comprising a container configured to house an electrode assembly, wherein the container includes a bottom wall and a plurality of side walls, the bottom wall and the plurality of side walls are integrated to define an internal space for housing the electrode assembly and to further define a top opening on an opposing side from the bottom wall, at least one of the bottom wall and the plurality of side walls comprises a liquid crystal aromatic poly(ester amide), and the battery case has a water vapor transmission rate (WVTR) at a wall thickness of 1 millimeter of less than or equal to about 0.07 grams per square meter per day, as measured at 38 C. and a relative humidity of 100% according to ISO 15106 or ASTM F1249.

This invention relates to compositions and methods for increasing the crystallization rate and/or processing speed of polyhydroxyalkanoate (PHA) polymers. PHA polymers are notorious for slow crystallization rates, reducing the practicality for using PHA for consumer products. Compounds that have similar crystal structures to PHA and have a melting point higher than that of the PHA, such as pentaerythritol, as well as compounds that undergo a crystal structure change at or below the melting point of the polymer, such as sulfur or selenium, act as good crystal nucleators for PHA.

The present invention provides a wholly aromatic liquid crystalline polyester resin having an excellent heat resistance while having an extremely low dielectric tangent.

The invention provides a lighting device (10) comprising a light source (100) configured to generate light source light (101) and a light converter element (200), wherein the light converter element (200) comprises a light transmissive matrix (205), wherein the light transmissive matrix (205) comprises: (i) a first luminescent material (210) configured to convert at least part of one or more of (a) the light source light (101) and (b) optionally a second luminescent material light (221) from an optional second luminescent material (220) into a first luminescent material light (211); and (ii) a thermo-responsive liquid crystalline compound (250); wherein the light transmissive matrix (205) is configured in thermal contact with the light source (100), and wherein the lighting device (10) is further configured to provide lighting device light (11) comprising said light source light (101), said first luminescent material light (210) and optionally said second luminescent material light (221), and wherein said light converter element is arranged for changing one or more of the color and color temperature of the lighting device light with the electrical power provided to the light source.

The present invention relates to a polymer composition for production of shaped objects via selective laser sintering wherein the polymer composition comprises a thermoplastic material having: a crystallisation half time of 30 s and 12 min at a supercooling of 50 C. below the peak melt temperature, wherein the crystallisation half time t.sub.1/2,c as determined via differential scanning calorimetry in accordance with ISO 11357-1 (2009); a glass transition temperature T.sub.g of 50 C. as determined in accordance with ISO 11357-2 (2013); a peak melt temperature T.sub.p,m of 200 C. as determined in accordance with ISO 11357-3 (2011), first heating nm; an extrapolated first heating run melt onset temperature T.sub.ei,m of 5 C. above the extrapolated first cooling run crystallisation end temperature T.sub.ef,c as determined in accordance with ISO 11357-1 (2009), first heating and cooling run; and a degree of crystallinity of 10.0% as determined according to the formula (I), wherein: D=degree of crystallinity of the thermoplastic material (%); H.sub.f=enthalpy of fusion of the thermoplastic material as determined in accordance with ISO 11357-3 (2011); H.sub.f,100=enthalpy of fusion of the thermoplastic material in a 100% crystalline state. Such polymer composition has a continuous use temperature of 100 C., and a low change of molecular weight during exposure to selective laser sintering processing temperatures.

[00001]$\begin{array}{cc}D=\frac{.Math..Math.H_f}{.Math..Math.H_{f,100}}100.Math.\%& \left(1\right)\end{array}$

An ovenware has a container portion, and a handle portion connected to the container portion, in which the ovenware is a molded article of a resin composition containing a liquid crystalline polyester resin and a talc filler, a deflection temperature under load of the resin composition is 270 C. or higher, an internal volume of the ovenware is 500 mL or more and 6 L or less, and a thickness of the container portion is 0.3 mm or more and 5 mm or less.

Some variations provide an oligomer composition comprising: polarizable first thermotropic liquid-crystal oligomer molecules (preferably urethanes or ureas) containing first triggerable reactive end groups, wherein the first triggerable reactive end groups are selected from the group consisting of hydroxyl, isocyanate, blocked isocyanate, acrylate, epoxide, amine, vinyl, ester, thiol, conjugated diene, substituted alkene, furan, maleimide, anthracene, and combinations thereof, and wherein the polarizable first thermotropic liquid-crystal oligomer molecules are characterized by a weight-average molecular weight from about 200 g/mol to about 10,000 g/mol; optionally, a plurality of polarizable second thermotropic liquid-crystal oligomer molecules containing second triggerable reactive end groups, wherein the second triggerable reactive end groups are capable of reacting with the first triggerable reactive end groups; and optionally, a reactive coupling agent capable of reacting with the first triggerable reactive end groups. Methods are described for converting the oligomer composition into an anisotropic thermally conductive polymer. Many commercial uses are disclosed.

Described is a super elastic epoxy hydrogel that is easy to manufacture and can be engineered for various performance enhancements of the polymer. Also described are methods of enhancing the performance of this hydrogel and other hydrogels. Various polymer hydrogel composites, structures and their uses are included.