To provide a water-soluble film having excellent solubility, a packaging bag using the water-soluble film, a content release body using the water-soluble film, and a method for producing a water-soluble film. It is a water-soluble film prepared by film-forming a raw material containing a polyvinyl alcohol-based resin and a bisulfite. A bisulfite is added to the raw material containing the polyvinyl alcohol-based resin. Owing to this, the decrease in solubility of the water-soluble film is suppressed even though the raw material is maintained in a heating state for a predetermined time. This effect is the effect characteristic in a bisulfite, and is the effect that is not obtained in the case where a sulfite is used.

To provide a water-soluble film having excellent solubility, a packaging bag using the water-soluble film, a content release body using the water-soluble film, and a method for producing a water-soluble film. It is a water-soluble film prepared by film-forming a raw material containing a polyvinyl alcohol-based resin and a bisulfite. A bisulfite is added to the raw material containing the polyvinyl alcohol-based resin. Owing to this, the decrease in solubility of the water-soluble film is suppressed even though the raw material is maintained in a heating state for a predetermined time. This effect is the effect characteristic in a bisulfite, and is the effect that is not obtained in the case where a sulfite is used.

A thermoplastic resin composition containing 25 to 50 parts by mass of a rubber-containing graft copolymer (A) obtained by copolymerizing a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound in the presence of a diene-based rubber-like polymer, and 50 to 75 parts by mass of a hard copolymer mixture (B) containing a hard copolymer (B-I) and a hard copolymer (B-II).

A Addition-fragmentation oligomers containing allylic disulfide groups are described. The oligomers may be added to polymerizable compositions to provide labile crosslinks that can cleave and reform during the polymerization process.

A polymer blend comprising from 20 to 90 parts by weight, based on the total weight of the polymer blend, polyvinyl chloride resin; and from 10 to 80 parts by weight, based on the total weight of the polymer blend, a flexible acrylic polymer is provided. Also provided are films or sheets or pipe made from the polymer blend, a capstock made from the film and a method for preparing a film.

Disclosed are compositions comprising a) one or more cyclic (meth)acrylate esters; b) one or more alkyl (meth)acrylates; and c) one or more of i to iv; i) the one or more alkyl (meth)acrylates have two or more carbons in the alkyl group; ii) the one or more alkyl (meth)acrylates contain one or more alkyl methacrylates and one or more C.sub.2-8 alkyl acrylates; iii) one or more unsaturated compounds containing nucleophilic groups or electrophilic groups; iv) one or more impact modifiers, colorants, mold release agents, flow modifiers, UV absorbers, light stabilizers, fillers, fibers, anti-oxidants, and heat stabilizers. Disclosed are copolymers prepared therefrom having a weight average molecular weight of about 50,000 g/mole or greater and a glass transition temperature of about 100° C. or greater. Disclosed are methods for preparing such copolymers. Disclosed are articles prepared from the compositions.

Disclosed are compositions comprising a) one or more cyclic (meth)acrylate esters; b) one or more alkyl (meth)acrylates; and c) one or more of i to iv; i) the one or more alkyl (meth)acrylates have two or more carbons in the alkyl group; ii) the one or more alkyl (meth)acrylates contain one or more alkyl methacrylates and one or more C.sub.2-8 alkyl acrylates; iii) one or more unsaturated compounds containing nucleophilic groups or electrophilic groups; iv) one or more impact modifiers, colorants, mold release agents, flow modifiers, UV absorbers, light stabilizers, fillers, fibers, anti-oxidants, and heat stabilizers. Disclosed are copolymers prepared therefrom having a weight average molecular weight of about 50,000 g/mole or greater and a glass transition temperature of about 100° C. or greater. Disclosed are methods for preparing such copolymers. Disclosed are articles prepared from the compositions.

This disclosure provides a fluorine-containing mixture and a fluorine-containing super-oleophobic microporous membrane using the fluorine-containing mixture as a raw material, as well as preparation methods and applications for the fluorine-containing mixture and the fluorine-containing super-oleophobic microporous membrane. The fluorine-containing mixture of the present disclosure comprises, by weight percentage, the following components: Component A: 50%˜90%; Component B: 3%˜25%; Component C: 0%˜35%; Component D: 0%˜3%; wherein Component A comprises high molecular weight polytetrafluoroethylene homopolymer or copolymer dispersion resin; Component B comprises one or more fluorine-containing alkyl acrylate monomers; Component C comprises one or more fluorine-free acrylates; Component D comprises high temperature free radical initiator. There's no need to add inflammable or explosive lubricating oil, making the process highly safe; and the obtained fluorine-containing super-oleophobic microporous membrane has high waterproof, air-permeable, oil-resistant and washable performance, in line with the needs of a new generation of waterproof and air-permeable protective clothing.

The present invention relates to a method for preparing a conjugated diene-based polymer, characterized in using a dimer acid saponified material as an emulsifier in a polymerization initiation step and injecting a monomer and the emulsifier in three or more installments after initiating polymerization, and the conjugated diene-based polymer prepared by the preparation method of the present invention has excellent physical properties such as impact strength and reflection haze.

A thermoplastic resin composition containing 25 to 50 parts by mass of a rubber-containing graft copolymer (A) obtained by copolymerizing a monomer mixture containing an aromatic vinyl compound and a vinyl cyanide compound in the presence of a diene-based rubber-like polymer, and 50 to 75 parts by mass of a hard copolymer mixture (B) containing a hard copolymer (B-I) and a hard copolymer (B-II).