Described are compositions and methods for inhibiting polymerization of a monomer (e.g., styrene) composition a quinone methide polymerization retarder and an ammonium salt. In a mixture, the ammonium salt improves the efficacy of the quinone methide polymerization retarder and provides greater antipolymerant activity. In turn, the mixture reduces or prevents apparatus fouling and improves the purity of monomer streams.

Described are compositions and methods for inhibiting polymerization of a monomer (e.g., styrene) composition a quinone methide polymerization retarder and an ammonium salt. In a mixture, the ammonium salt improves the efficacy of the quinone methide polymerization retarder and provides greater antipolymerant activity. In turn, the mixture reduces or prevents apparatus fouling and improves the purity of monomer streams.

This disclosure relates to heat transfer fluids for use in an apparatus having a heat transfer system. In one embodiment, the heat transfer fluids have at least one Group IV base oil, as a major component; at least one phenolic antioxidant, as a minor component; and optionally an aminic antioxidant in an amount less than about 0.25 weight percent, based on the total weight of the heat transfer fluid. In another embodiment, the heat transfer fluids have at least one Group V base oil, as a major component; and a mixture of at least two antioxidants, as a minor component. The at least one Group IV base oil and the at least one Group V base oil have a kinematic viscosity (KV.sub.100) from about 0.5 cSt to about 12 cSt at 100 C. The mixture of at least two antioxidants has a phenolic antioxidant and an aminic antioxidant. This disclosure further relates to methods for improving thermal-oxidative stability of a heat transfer fluid used in an apparatus having a heat transfer system.

This disclosure relates to heat transfer fluids for use in an apparatus having a heat transfer system. In one embodiment, the heat transfer fluids have at least one Group IV base oil, as a major component; at least one phenolic antioxidant, as a minor component; and optionally an aminic antioxidant in an amount less than about 0.25 weight percent, based on the total weight of the heat transfer fluid. In another embodiment, the heat transfer fluids have at least one Group V base oil, as a major component; and a mixture of at least two antioxidants, as a minor component. The at least one Group IV base oil and the at least one Group V base oil have a kinematic viscosity (KV.sub.100) from about 0.5 cSt to about 12 cSt at 100 C. The mixture of at least two antioxidants has a phenolic antioxidant and an aminic antioxidant. This disclosure further relates to methods for improving thermal-oxidative stability of a heat transfer fluid used in an apparatus having a heat transfer system.

A method for manufacturing a polylactic acid-based hot melt adhesive includes: (1) preparing a first polylactic acid composition by adding a phosphite and a hindered phenol to a mixture prepared by adding and melt-mixing a first polylactic acid (relative viscosity 2.5-4.0) in a liquid mixture of a dithiocarbamate and a plasticizer at 180 to 280 C., wherein with respect to 100 parts by weight of the first polylactic acid, 10 to 100 parts by weight of the plasticizer, 0.02 to 0.3 parts by weight of the dithiocarbamate, 1 to 10 parts by weight of the phosphite, and 1 to 10 parts by weight of the hindered phenol are used; and (2) mixing a second polylactic acid (relative viscosity 2.5-4.0), into the first polylactic acid composition at 180-280 C., a weight ratio of the first polylactic acid/the second polylactic acid is 2/8 to 8/2.

A quantum dot composition is described comprising light-emitting nanoparticles comprising a polyamine silicone ligand dispersed in a polymerizable resin composition comprising at least one polythiol, at least one polyene, wherein the polyene lacks functional groups that are amine-reactive, at least one amine-reactive ethylenically unsaturated component in an amount ranging from 2 to 15 wt.%, based on the total wt. % solids of the composition, and a hindered phenolic antioxidant. Also described are quantum dot (e.g. film) articles.

A quantum dot composition is described comprising light-emitting nanoparticles comprising a polyamine silicone ligand dispersed in a polymerizable resin composition comprising at least one polythiol, at least one polyene, wherein the polyene lacks functional groups that are amine-reactive, at least one amine-reactive ethylenically unsaturated component in an amount ranging from 2 to 15 wt.%, based on the total wt. % solids of the composition, and a hindered phenolic antioxidant. Also described are quantum dot (e.g. film) articles.

Provided are: a stabilizer composition capable of imparting a vinyl chloride resin with excellent thermal stability, coloration resistance, and thermal coloration resistance; a vinyl chloride resin composition containing the same and a molded article of the composition. The stabilizer composition contains, with respect to 100 parts by mass of a component (A): 5 to 700 parts by mass of a component (B) and 5 to 200 parts by mass of a component (C). The component (A) is at least one organic acid zinc salt, the component (B) is at least one selected from the group consisting of organic acid barium salts, overbased barium carbonates, organic acid calcium salts and overbased calcium carbonates, and the component (C) is at least one hindered amine-based light stabilizer.

Provided are: a stabilizer composition capable of imparting a vinyl chloride resin with excellent thermal stability, coloration resistance, and thermal coloration resistance; a vinyl chloride resin composition containing the same and a molded article of the composition. The stabilizer composition contains, with respect to 100 parts by mass of a component (A): 5 to 700 parts by mass of a component (B) and 5 to 200 parts by mass of a component (C). The component (A) is at least one organic acid zinc salt, the component (B) is at least one selected from the group consisting of organic acid barium salts, overbased barium carbonates, organic acid calcium salts and overbased calcium carbonates, and the component (C) is at least one hindered amine-based light stabilizer.

An object of the present invention is to provide an oil and fat composition with unprecedentedly strong oxidative stability by using a simple method. The invention has been completed with the findings that an oil and fat composition shows an extremely strong oxidation stabilizing effect, the antioxidant oil and fat composition comprising an aqueous phase containing a water-soluble antioxidant and a carbohydrate and having a certain degree or more of water-soluble solids content, the aqueous phase being dispersed in an oil phase, wherein the antioxidant oil and fat composition contains a certain amount of water.