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Thermally-stable ABS (Acrylonitrile Butadiene Styrene) resin composition

A technology of ABS resin and composition, applied in the field of thermally stable ABS resin composition, which can solve the problems of economic constraints, insufficient dispersion of resin matrix, and low efficiency

Pending Publication Date: 2022-05-13
中化国际聚合物(连云港)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the phenolic antioxidant is introduced in the ABS blending stage (HRG+SAN) or ABS blending modification stage, its efficiency is not high due to insufficient dispersion with the resin matrix
Radical scavengers are expensive, constraining product economics
If hypophosphite antioxidants and phosphate antioxidants are added directly in the flocculation section, they will dissolve in water and cause saline wastewater

Method used

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  • Thermally-stable ABS (Acrylonitrile Butadiene Styrene) resin composition
  • Thermally-stable ABS (Acrylonitrile Butadiene Styrene) resin composition
  • Thermally-stable ABS (Acrylonitrile Butadiene Styrene) resin composition

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Effect test

Embodiment 1

[0071] The present embodiment prepares a kind of ABS resin composition according to the formula shown in table 2 through the following steps:

[0072] (1) the mass fraction of preparation sodium hypophosphite is 33% sodium hypophosphite aqueous solution, the mass fraction of preparation polyether modified polysiloxane is the polyether modified polysiloxane aqueous solution of 0.1%;

[0073] (2) premixing all solid raw materials to obtain a premix;

[0074] (3) Pour pre-prepared sodium hypophosphite aqueous solution and polyether modified polysiloxane aqueous solution into the premix, and mix;

[0075] (4) Melt blending and granulation: According to the temperature conditions shown in Table 1, a twin-screw extruder was used to blend and granulate the material obtained in step (3) to obtain an ABS resin composition.

Embodiment 2

[0077] The present embodiment prepares a kind of ABS resin composition according to the formula shown in table 2 through the following steps:

[0078] (1) the mass fraction of preparation polyether-modified polysiloxane is the polyether-modified polysiloxane aqueous solution of 0.1%;

[0079] (2) Add porous PS, sodium hypophosphite, and polyether-modified polysiloxane aqueous solution prepared in advance to the container, stir and let stand, and wait for the porous PS to absorb the solution;

[0080] (3) mixing the material obtained in step (2) with resin and other additives;

[0081] (4) Melt blending and granulation: According to the temperature conditions shown in Table 1, a twin-screw extruder was used to blend and granulate the material obtained in step (3) to obtain an ABS resin composition.

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Abstract

The invention provides an ABS (Acrylonitrile Butadiene Styrene) resin composition. The ABS resin composition comprises (A) an antioxidant composition and (B) high rubber powder, the antioxidant composition includes (A1) a hypophosphorous acid or hypophosphite salt, (A2) an interfacial modifier, and optionally (A3) a porous hydrophobic polymer carrier. The high rubber powder, the interface modifier, hypophosphorous acid or hypophosphite and the optional porous polymer carrier are matched to form an antioxidant system, the antioxidant system is introduced in an HRG flocculation stage or an ABS blending stage or an ABS blending modification stage, the antioxidant system can be fully dispersed in the resin composition, and the antioxidant efficiency is high; thus, a thermally stable resin composition with reduced yellowness is prepared.

Description

technical field [0001] The invention belongs to the field of ABS resins, in particular to a thermally stable ABS resin composition. Background technique [0002] ABS (terpolymer of three monomers of acrylonitrile, butadiene, and styrene) is a commonly used housing material in the automotive and electrical industries. This material has good impact performance and stiffness, and is often combined with polycarbonate (PC ), polyester (PBT) and other engineering plastics are mixed to form alloys to obtain higher Vicat temperature and mechanical properties. Industrialized ABS production techniques include emulsion graft polymerization, emulsion graft blending and continuous bulk polymerization. Among them, the process flow of the emulsion graft blending method mainly includes: PBL (polybutadiene latex) synthesis, HRG (high rubber content ABS graft powder, referred to as high rubber powder) preparation, HRG+SAN (styrene-acrylonitrile copolymer) blending and optional blending modi...

Claims

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Application Information

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IPC IPC(8): C08L25/12C08L55/02C08L51/04C08L83/12C08K13/02C08K3/32C08K5/20C08K3/22C08K5/098C08K13/06C08K9/12
CPCC08L25/12C08L2201/08C08L2205/035C08L55/02C08L51/04C08L83/12C08K13/02C08K3/32C08K5/20C08K3/22C08K5/098C08K13/06C08K9/12
Inventor 席劲李春旭
Owner 中化国际聚合物(连云港)有限公司
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