Process for preparing thermoplastic transparent resin
First Claim
1. A process for preparing thermoplastic transparent resin comprising the steps of:
- (i) preparing a transparent graft resin by grafting a monomer mixture comprising 20 to 50 parts by weight of conjugated diene rubber latex, 10 to 50 parts by weight of methacrylic acid alkylester compound or acrylic acid alkylester compound, 5 to 25 parts by weight of aromatic vinyl compound, and 1 to 10 parts by weight of vinyl cyanide compound through an emulsion polymerization using between 0.2 and 0.3 parts by weight of alkylaryl sulfonate salts as emulsifier;
(ii) preparing methylmethacrylate-styrene-acrylonitrile (MSAN) copolymer by copolymerizing 50 to 75 parts by weight of methacrylic acid alkylester compound or alkylester compound, 20 to 45 parts by weight of aromatic vinyl compound, and 1 to 10 parts by weight of vinyl cyanide compound during bulk polymerization; and
(iii) blending the transparent graft resin of step (i) with the MSAN copolymer of step (ii).
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Abstract
The present invention relates to an impact resistant resin composition having superior balance of physical properties of chromacity, impact resistance and strength, and a process for preparing an impact resistant resin composition that can largely reduce draining treatment. The process of the present invention comprises the steps of preparing a resin without rubber ingredient by a mass polymerization, and adding and mixing a conjugated copolymer having rubber ingredient, when the resin is molten in the latter part of monomer-removal process, to prepare an impact resistant resin composition, wherein the conjugated copolymer is previously dehydrated and dried by filtering a copolymerization liquid.
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9 Claims
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1. A process for preparing thermoplastic transparent resin comprising the steps of:
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(i) preparing a transparent graft resin by grafting a monomer mixture comprising 20 to 50 parts by weight of conjugated diene rubber latex, 10 to 50 parts by weight of methacrylic acid alkylester compound or acrylic acid alkylester compound, 5 to 25 parts by weight of aromatic vinyl compound, and 1 to 10 parts by weight of vinyl cyanide compound through an emulsion polymerization using between 0.2 and 0.3 parts by weight of alkylaryl sulfonate salts as emulsifier;
(ii) preparing methylmethacrylate-styrene-acrylonitrile (MSAN) copolymer by copolymerizing 50 to 75 parts by weight of methacrylic acid alkylester compound or alkylester compound, 20 to 45 parts by weight of aromatic vinyl compound, and 1 to 10 parts by weight of vinyl cyanide compound during bulk polymerization; and
(iii) blending the transparent graft resin of step (i) with the MSAN copolymer of step (ii). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification