The present disclosure relates to the production of polyacrylonitrile-based polymers with high conversion by a process comprising reacting acrylonitrile with at least one comonomer in the presence of a radical initiator in a liquid medium, wherein the radical initiator is present in an amount of from about 0.6 wt % to about 1.8 wt %, relative to the amount of acrylonitrile, and wherein no chain transfer agent is present. The polyacrylonitrile-based polymers produced may be used for producing carbon fiber, typically carbon fiber used in manufacturing composite materials.

Disclosed are fluorescent water-soluble water treatment polymers suitable for use in scale inhibition in industrial water systems, the water treatment polymers comprising non-quaternized fluorescent naphthalimide derivative monomers. Also disclosed are methods of making the monomers, methods of making the polymers, methods of inhibiting scale in an industrial water system, and methods of using the polymers in coagulation and flocculation, and in cleaning applications.

Disclosed are fluorescent water-soluble water treatment polymers suitable for use in scale inhibition in industrial water systems, the water treatment polymers comprising non-quaternized fluorescent naphthalimide derivative monomers. Also disclosed are methods of making the monomers, methods of making the polymers, methods of inhibiting scale in an industrial water system, and methods of using the polymers in coagulation and flocculation, and in cleaning applications.

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.

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 rubber composition for golf balls includes (A) a base rubber, (B) an acrylate ester or methacrylate ester containing an isocyanate group or a blocked isocyanate group, (C) diacrylic acid, dimethacrylic acid or a metal salt thereof, and (D) an organic peroxide. In a golf ball having a core formed of the rubber composition and a cover of one or more layers which encases the core, the rubber composition exhibits a spin rate-lowering effect on shots and can thus improve the flight performance of the ball.

A rubber composition for golf balls includes (A) a base rubber, (B) an acrylate ester or methacrylate ester containing an isocyanate group or a blocked isocyanate group, (C) diacrylic acid, dimethacrylic acid or a metal salt thereof, and (D) an organic peroxide. In a golf ball having a core formed of the rubber composition and a cover of one or more layers which encases the core, the rubber composition exhibits a spin rate-lowering effect on shots and can thus improve the flight performance of the ball.

Copolymers of vinyl acetate, vinyl chloride, and vinyl esters of long chain carboxylic acids are soluble in low polarity organic solvents, and produce superior binder and seam-sealing compositions. The copolymers contain 50-75 wt. % vinyl chloride, 5-25 wt. % vinyl acetate, and 10-55 wt. % vinyl ester of long-chain carboxylic acid.

Copolymers of vinyl acetate, vinyl chloride, and vinyl esters of long chain carboxylic acids are soluble in low polarity organic solvents, and produce superior binder and seam-sealing compositions. The copolymers contain 50-75 wt. % vinyl chloride, 5-25 wt. % vinyl acetate, and 10-55 wt. % vinyl ester of long-chain carboxylic acid.

An aqueous composition including multi-stage latex polymer particles is provided. The multi-stage latex polymer particles include (A) a first-stage polymer containing (i) an ethylenically unsaturated acid monomer with two carboxylic acid groups and (ii) a first vinyl monomer, and (B) a second-stage polymer containing (i) an ethylenically unsaturated monomer with an epoxy group and (ii) a second vinyl monomer. An article including a nonwoven textile impregnated with the aqueous composition is also provided.