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Non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and method for continuously preparing the same

A technology for aromatic vinyl and vinyl cyanide, applied in the field of continuous preparation of the copolymer and rubber-modified aromatic vinyl-vinyl cyanide copolymer, can solve undesired problems

Active Publication Date: 2011-06-22
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although products prepared by these methods have advantages such as good color, purity, low cost, etc. compared to ABS products prepared by conventional emulsion polymerization, they are not desirable in terms of physical properties

Method used

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  • Non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and method for continuously preparing the same
  • Non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and method for continuously preparing the same
  • Non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and method for continuously preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] In the mixed solution comprising 53.4 parts by weight of styrene, 17.8 parts by weight of acrylonitrile and 20 parts by weight of ethylbenzene, a butadiene rubber (BR-1: ASADENE 55AE with a solution viscosity of 170 cps in a 5% styrene solution was added. ), and make it dissolve, then add 0.015 parts by weight of 1,1-bis(tert-butylperoxy)cyclohexane and 0.07 parts by weight of tert-dodecyl mercaptan as molecular weight control agent to prepare reaction solution . The prepared reaction solution was fed into the reactor at a rate of 25 kg / hr. During the polymerization, the first reactor was controlled to a stirring rate of 120 rpm and a conversion of 35%, while the second reactor was controlled to a stirring rate of 70 rpm and a conversion of 75%. Then, the reactants discharged from the reactor are continuously sent to a devolatilization device to remove unreacted monomers, and then the polymerized product is pelletized to obtain an ABS resin. The average rubber particl...

Embodiment 2

[0084] Example 2 was implemented in the same manner as Example 1 except that the stirring rate of the first reactor was 100 rpm. The average rubber particle diameter of the ABS resin prepared in Example 2 was about 8.58 μm. TEM image of rubber particles figure 2 shown.

Embodiment 3

[0086] Example 3 was implemented in the same manner as in Example 1 except that the stirring rate of the first reactor was 80 rpm. The average rubber particle diameter of the ABS resin prepared in Example 3 was about 14.11 μm. TEM image of rubber particles image 3 shown.

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Abstract

Disclosed herein is a non-glossy rubber modified aromatic vinyl-vinyl cyanide copolymer and a method for continuously preparing the same. The copolymer comprises about 80 to about 93 % by weight of an aromatic vinyl-vinyl cyanide copolymer grafted onto about 7 to about 20 % by weight of a diene-based rubber, and a dispersed phase of the copolymer has an average rubber particle diameter of about 6to about 20 [mu]m and a span of about 1.2 to about 2.8.

Description

[0001] References to related applications [0002] This application claims both the priority of Korean Patent Application No. 10-2007-141056 filed on December 28, 2007 with the Korean Intellectual Property Office and Korean Patent Application No. 10-2008-108621 filed with the Korean Intellectual Property Office on November 3, 2008, The disclosures of these two patent applications are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to dull rubber-modified aromatic vinyl-vinyl cyanide copolymer and its continuous preparation method. More specifically, the present invention relates to a rubber-modified aromatic vinyl-vinyl cyanide (vinyl cyanide) copolymer having excellent matt properties by controlling the particle diameter of the rubber phase within a specific range, while the present invention It also relates to a process for the continuous preparation of the copolymer. Background technique [0004] In general, acr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F279/04C08F2/06
CPCC08F279/02C08F279/04C08F285/00C08L51/04C08L55/02
Inventor 陈永燮朴桓石洪在根金成官宣浩龙李炳道李胜天
Owner LOTTE ADVANCED MATERIALS CO LTD