Disclosed herein are a thermoplastic copolymer, which is a polymer of a monomer mixture including: a phosphorus (meth)acrylic monomer represented by Formula 1; an aromatic vinyl monomer; and a vinyl cyanide monomer. The thermoplastic copolymer can exhibit excellent flame retardancy with minimal or no deterioration in heat resistance, and is eco-friendly. ##STR00001## wherein R.sub.1 is hydrogen or methyl; R.sub.2 is a substituted or unsubstituted C.sub.1 to C.sub.20 hydrocarbon group; R.sub.3 and R.sub.4 are each independently a substituted or unsubstituted C.sub.6 to C.sub.20 cyclic hydrocarbon group; m is an integer from 1 to 10; and n is an integer from 0 to 5.

Cheil Industries Inc.

Flame retardant thermoplastic copolymer, method for preparing the same, and molded article including the same

To suppress deterioration of mechanical properties of a foam, by using a polyol system solution stored. A polyol system solution is prepared by using a polyether polyol (A1) having a hydroxy value of from 5 to 45 mgKOH/g and an average number of hydroxy groups of from 2 to 8, obtainable by subjecting an alkylene oxide to ring-opening addition polymerization to an initiator, in the presence of a double metal cyanide complex catalyst, to obtain an intermediate polyol; and subjecting ethylene oxide to a ring-opening addition polymerization in an amount of from 1 to 23 mol per 1 mol of the initiator to the intermediate polyol, in the presence of an alkali metal hydroxide as a polymerization catalyst, and a flexible polyurethane foam is produced by using the polyol system solution.

cyanide/atrophy

Flame retardant thermoplastic copolymer, method for preparing the same, and molded article including the same

Process for producing polyether polyol, process for producing flexible polyurethane foam, and seat

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