A polyphosphonate resin composition of the present invention comprises: approximately 100 parts by weight of a polyphosphonate resin comprising a repeating unit represented by chemical formula 1; and approximately 0.01-0.05 parts by weight of a sulfonate compound represented by chemical formula 2. The polyphosphonate resin composition has excellent thermal discoloration resistance, light discoloration resistance, flame retardancy, light transmittance and the like.

A polyphosphonate resin composition of the present invention comprises: approximately 100 parts by weight of a polyphosphonate resin comprising a repeating unit represented by chemical formula 1; and approximately 0.01-0.05 parts by weight of a sulfonate compound represented by chemical formula 2. The polyphosphonate resin composition has excellent thermal discoloration resistance, light discoloration resistance, flame retardancy, light transmittance and the like.

This composition for a hole collecting layer of an organic photoelectric conversion element contains: a charge-transporting substance comprising a polyaniline derivative represented by formula (1); a fluorine-based surfactant; and a solvent. The composition provides a thin film suitable for a hole collecting layer of an organic photoelectric conversion element, and is particularly suited for producing an inverse lamination type organic photoelectric conversion element. ##STR00001##
(In the formula, R.sup.1 to R.sup.6 each independently represent a hydrogen atom, etc., but one of R.sup.1 to R.sup.4 is a sulfonic acid group, one or more of the remaining R.sup.1 to R.sup.4 are a C1-20 alkoxy group, a C1-20 thioalkoxy group, a C1-20 alkyl group, a C2-20 alkenyl group, a C2-20 alkynyl group, a C1-20 haloalkyl group, a C6-20 aryl group, or a C7-20 aralkyl group, and m and n are numbers which satisfy 0≤m≤1, 0≤n≤1 and m+n=1).

This composition for a hole collecting layer of an organic photoelectric conversion element contains: a charge-transporting substance comprising a polyaniline derivative represented by formula (1); a fluorine-based surfactant; and a solvent. The composition provides a thin film suitable for a hole collecting layer of an organic photoelectric conversion element, and is particularly suited for producing an inverse lamination type organic photoelectric conversion element. ##STR00001##
(In the formula, R.sup.1 to R.sup.6 each independently represent a hydrogen atom, etc., but one of R.sup.1 to R.sup.4 is a sulfonic acid group, one or more of the remaining R.sup.1 to R.sup.4 are a C1-20 alkoxy group, a C1-20 thioalkoxy group, a C1-20 alkyl group, a C2-20 alkenyl group, a C2-20 alkynyl group, a C1-20 haloalkyl group, a C6-20 aryl group, or a C7-20 aralkyl group, and m and n are numbers which satisfy 0≤m≤1, 0≤n≤1 and m+n=1).

Rapid prototyping and delivery of fluorescent medical devices using a 3D printer provided with a processed digital design and fluorescent filament feedstock. The fluorescent filament may comprise a polymer such as acrylonitrile butadiene styrene and between 10 and 100 ppm of a fluorophore such as indocyanine green embedded uniformly throughout the polymer. The filament may include about one percent by weight of a colorant. The 3D printer may be located at the site of use by an end user, such as a physician office, hospital, or operating room for printing of the fluorescent medical device on demand.

The present disclosure is drawn to food contact compliant three-dimensional printing kits, materials, compositions, systems, and methods. In one example, a multi-fluid kit of food contact compliant agents for three-dimensional printing can include a food contact compliant fusing agent and a food contact compliant detailing agent. The food contact compliant fusing agent can include from about 70 wt% to about 96 wt% water, from about 3 wt% to about 10 wt% by solids weight of a food contact compliant carbon black dispersion, and from about 1 wt% to about 25 wt% of a food contact compliant water-soluble first co-solvent. The food contact compliant detailing agent can include from about 75 wt % to about 99 wt% water and from about 0.01 wt% to about 1 wt% of a food contact compliant chelating compound.

Provided is a polymerizable liquid crystal composition used for formation of an optically anisotropic film having excellent durability, an optically anisotropic film, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (1) and an acidic compound, in which a pKa of the acidic compound is more than −10 and 5 or less, and a content of the acidic compound is 20 parts by mass or less with respect to 100 parts by mass of the polymerizable liquid crystal compound. ##STR00001##

The present invention provides polymersomes comprising amphiphilic block-copolymers and their use to quantify ammonia in samples (e.g., body fluid samples). More particularly, it provides a polymersome comprising (a) a membrane, which comprises a block copolymer of poly(styrene) (PS) and poly(ethylene oxide) (PEO), wherein the PS/PEO molecular weight ratio is higher than 1.0 and lower than 4.0; and (b) a core which encloses an acid and at least one pH-sensitive dye. Compositions, strips and kits comprising the polymersomes are also provided along with methods of quantifying ammonia in a sample using the polymersomes, compositions and kit.

The present invention provides polymersomes comprising amphiphilic block-copolymers and their use to quantify ammonia in samples (e.g., body fluid samples). More particularly, it provides a polymersome comprising (a) a membrane, which comprises a block copolymer of poly(styrene) (PS) and poly(ethylene oxide) (PEO), wherein the PS/PEO molecular weight ratio is higher than 1.0 and lower than 4.0; and (b) a core which encloses an acid and at least one pH-sensitive dye. Compositions, strips and kits comprising the polymersomes are also provided along with methods of quantifying ammonia in a sample using the polymersomes, compositions and kit.

In various embodiments, methods for producing aqueous polyisoprene latex from natural cis-1,4-polyisoprene are described. The natural cis-1,4-polyisoprene may be sourced from guayule scrubs. In various embodiments, the method comprises extracting guayule plant material to form a miscella, fractionating the miscella to a preliminary cement, diluting the preliminary cement to a cement for dispersing, dispersing the cement in an aqueous surfactant mixture under high shear to produce an emulsion, and de-solventizing the emulsion to produce an aqueous latex dispersion. The rubber solids level can then be adjusted by centrifugation and dilution in water to produce a final aqueous cis-1,4-polyisoprene latex.