KR960022730A - Continuous manufacture of high gloss and impact resistant styrene resin compositions - Google Patents

Abstract

The present invention relates to a continuous manufacturing method of a high-gloss, impact-resistant styrene resin composition excellent in molding appearance and impact resistance, comprising (A) polybutadiene 1, polybutadiene 2, styrene-butadiene block copolymer 3, polybutadiene The weight ratio of 1 to polybutadiene 2 is polybutadiene 1 / polybutadiene 2 = 95/5 to 45/55, and the sum of polybutadiene 1 and polybutadiene 2 and the weight ratio of rubbery polymer 3 (polybutadiene 1 + polybutadiene 2 ) / Rubber polymer 3 dissolved in a vinyl monomer at a ratio of 90/10 to 35/65 to prepare a rubber solution, and then continuously supplied to the first reactor to carry out polymerization, and (B) polymerization in the first reactor. The phase transition of the rubbery polymer was carried out so that the conversion was 10 to 40% by weight, 10 to 65% of the rubber particles having a mean particle size of 0.1 to 0.5 μm, 85 to 15% of the rubber particles having a mean particle size of 0.6 to 1.2 μm, and 1.3 to 4.0 μm. Three types of rubber particles with an average particle diameter of 5 to 20% Rubber particles having a size distribution are produced, and (C) the reaction solution produced under the first reaction conditions is continuously supplied to the second, third, and fourth reaction tanks so that the conversion rate of the monomer is 65 to 90% by weight. Polymerization until the reaction solution (D) is continuously supplied to the devolatilization apparatus to separate the polymer including the rubber component from the unreacted monomer, and (E) the polymer containing the devolatilized rubber component is At least 8 parts by weight of the rubber-modified styrene resin composition is characterized by consisting of a corel structure and a salami structure.

Description

Continuous manufacturing method of high gloss and impact resistant styrene resin composition

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Claims (3)

(A) 5% styrene polybutadiene 1 and 5% styrene having a 5% styrene solution viscosity of 10 to 50 CPS in a method for producing a high gloss, impact resistance, and styrene resin composition having rubber particles having three particle size distributions in a dispersed phase. Polybutadiene 2 with a solution viscosity of 70 to 200 CPS, 5% styrene solution viscosity with 10 to 40 CPS, consisting of styrene-butadiene block copolymer 3 with a styrene content of 20 to 50 parts by weight, and polybutadiene 1 and polybutadiene 2 The weight ratio of polybutadiene 1 / polybutadiene 2 = 95/5 to 45/55, and the sum of polybutadiene 1 and polybutadiene 2 and the weight ratio of rubber polymer 3 (polybutadiene 1 + polybutadiene 2) / rubber polymer After dissolving in a vinyl monomer at a ratio of 3 = 90/10 to 35/65 to prepare a rubber solution, the rubber solution was continuously supplied to the first reactor to carry out polymerization, and (B) the reaction temperature was 120 to 145 ° C. in the first reactor. Under the condition that the stirring speed of the stirrer is 50 to 500 RPM By combining and phase-transferring the rubbery polymer to convert the monomer as a polymer of 10 to 40% by weight, 10 to 65% of rubber particles having a mean particle size of 0.1 to 0.5 μm, and 85 to 15 of rubber particles having a mean particle size of 0.6 to 1.2 μm. %, Rubber particles having a particle size distribution of 1.3 to 4.3 mu average particle diameter of 5 to 20% to produce a rubber particle having a three particle size distribution, (C) the reaction solution produced under the first reaction conditions, the second and third , The polymer was continuously supplied to the fourth reactor until the conversion of the monomer was 65 to 90% by weight, and (D) the polymer containing the rubber component was continuously fed to the deodorizing device from the reaction solution in the fourth reactor. And the unreacted monomer to separate (E) a high gloss, characterized in that the polymer containing the carbon component is a rubber-modified styrene resin composition to produce a styrene resin composition having a corel structure and a salami structure as at least 8 parts by weight of the rubber-modified styrene resin composition. , Impact resistance styrene Continuous preparation of paper compositions. The vinyl monomer according to claim 1, wherein the vinyl monomer is selected from styrene, methyl styrene, ethyl styrene, isopropyl styrene, alkyl styrene such as butyl styrene, vinyl styrene such as chloro styrene and bromine styrene, or substituted styrene such as halogenated styrene and halogenated alkyl styrene. A continuous production method of a high gloss and impact resistance styrene resin composition, characterized in that at least one kind. The rubber polymer according to claim 1, wherein the rubbery polymer is one or two or more of polybutadiene, styrene, butadiene copolymer, ethylene-propylene copolymer, ethylene-propylene-terpolymer copolymer and butadiene-acrylonitrile copolymer. A continuous manufacturing method of a high gloss and impact resistant styrene resin composition, characterized in that it is selected. ※ Note: The disclosure is based on the initial application.