The present invention relates to a polyvinyl alcohol-based resin, in which a block character (A) is less than 0.4, and an absorbance (B) at 320 nm in an ultraviolet absorption spectrum in the case of making the polyvinyl alcohol-based resin into a 0.1 wt % aqueous solution is 0.2 or more.

Disclosed are solvent cement formulations having beneficial stability and performance characteristics that include a thermoplastic resin, one or more organic solvents, an inhibitor of an oxidation-reduction reaction, and a heat stabilizer.

Provided is a method for preparing a chlorinated polyvinyl chloride resin, and more particularly, a method for preparing a chlorinated polyvinyl chloride resin including a neutralization process for neutralizing to pH of 2 to 5 using metal hydroxide as a first neutralizing agent a), and completing neutralization using a carbonate-based compound as a second neutralizing agent b), wherein residual hydrochloric acid in pores of the chlorinated polyvinyl chloride resin obtained by chlorination of a polyvinyl chloride or a vinyl chloride-based copolymer may be efficiently removed, and thermal stability and extrusion appearance of processed articles may be improved.

Provided is a method for preparing a chlorinated polyvinyl chloride resin, and more particularly, a method for preparing a chlorinated polyvinyl chloride resin including a neutralization process for neutralizing to pH of 2 to 5 using metal hydroxide as a first neutralizing agent a), and completing neutralization using a carbonate-based compound as a second neutralizing agent b), wherein residual hydrochloric acid in pores of the chlorinated polyvinyl chloride resin obtained by chlorination of a polyvinyl chloride or a vinyl chloride-based copolymer may be efficiently removed, and thermal stability and extrusion appearance of processed articles may be improved.

Provided is a method for preparing a chlorinated polyvinyl chloride resin, and more particularly, a method for preparing a chlorinated polyvinyl chloride resin including a neutralization process for neutralizing to pH of 2 to 5 using metal hydroxide as a first neutralizing agent a), and completing neutralization using a carbonate-based compound as a second neutralizing agent b), wherein residual hydrochloric acid in pores of the chlorinated polyvinyl chloride resin obtained by chlorination of a polyvinyl chloride or a vinyl chloride-based copolymer may be efficiently removed, and thermal stability and extrusion appearance of processed articles may be improved.

A method for providing particles of polyvinyl chloride, wherein the particles offer improved chlorinating efficiency, the method comprising (i) providing polyvinyl chloride particles; and (ii) introducing a chlorination accelerant to the polyvinyl chloride particles to thereby provide polyvinyl chloride particles having an accelerant associated therewith.

The invention relates to triesters of cyclohexanetripropionic acid, preparation thereof and use thereof as plasticizers for polymers wherein examples of the triester of cyclohexanetripropionic acid include tri(.sup.nbutyl) cyclohexane-1,2,4-tripropionate, tri(methylpropyl) cyclohexane-1,2,4-tripropionate, tri(.sup.npentyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isopentyl) cyclohexane-1,2,4-tripropionate, tri(2-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(3-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nhexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isohexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nheptyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isoheptyl) cyclohexane-1,2,4-tripropionate, tri(.sup.noctyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isooctyl) cyclohexane-1,2,4-tripropionate, tri(2-ethylhexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nnonyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isononyl) cyclohexane-1,2,4-tripropionate, tri(.sup.ndecyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isodecyl) cyclohexane-1,2,4-tripropionate, and tri(2-propylheptyl) cyclohexane-1,2,4-tripropionate.

The invention relates to triesters of cyclohexanetripropionic acid, preparation thereof and use thereof as plasticizers for polymers wherein examples of the triester of cyclohexanetripropionic acid include tri(.sup.nbutyl) cyclohexane-1,2,4-tripropionate, tri(methylpropyl) cyclohexane-1,2,4-tripropionate, tri(.sup.npentyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isopentyl) cyclohexane-1,2,4-tripropionate, tri(2-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(3-methylbutyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nhexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isohexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nheptyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isoheptyl) cyclohexane-1,2,4-tripropionate, tri(.sup.noctyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isooctyl) cyclohexane-1,2,4-tripropionate, tri(2-ethylhexyl) cyclohexane-1,2,4-tripropionate, tri(.sup.nnonyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isononyl) cyclohexane-1,2,4-tripropionate, tri(.sup.ndecyl) cyclohexane-1,2,4-tripropionate, tri(.sup.isodecyl) cyclohexane-1,2,4-tripropionate, and tri(2-propylheptyl) cyclohexane-1,2,4-tripropionate.

Provided is a vinyl chloride resin composition having excellent powder fluidity. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, and a uracil compound. The content of the plasticizer is not less than 50 parts by mass and not more than 200 parts by mass relative to 100 parts by mass of the vinyl chloride resin, and the content of the uracil compound is not less than 0.05 parts by mass and not more than 3.00 parts by mass relative to 100 parts by mass of the vinyl chloride resin.

Provided is a vinyl chloride resin composition having excellent powder fluidity. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, and a uracil compound. The content of the plasticizer is not less than 50 parts by mass and not more than 200 parts by mass relative to 100 parts by mass of the vinyl chloride resin, and the content of the uracil compound is not less than 0.05 parts by mass and not more than 3.00 parts by mass relative to 100 parts by mass of the vinyl chloride resin.