Preparation method of yellowing-resistant abs resin

An ABS resin and anti-yellowing technology, which is applied in the field of preparation of long-acting anti-yellowing ABS resin, can solve the problems of limited application, low whiteness value, high price of anti-yellowing agent, etc., and improve the anti-yellowing performance and thermal stability, and the effect of improving whiteness

Pending Publication Date: 2019-04-12
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese invention patent 201711260467X discloses a high-performance long-lasting anti-yellowing ABS material and its preparation method. The specific method is to add 0.1~10 anti-yellowing agents (SAG-002, SAG-005, SAG-008 ), and then granulated by melt extrusion, this method can effectively improve the yellowing resistance of ABS resin, but the whiteness value of ABS resin after melt extrusion becomes low, which destroys the apparent performance of ABS resin, and the SAG series The high price of anti-yellowing agent limits the application of this product in general-purpose ABS grade resins

Method used

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  • Preparation method of yellowing-resistant abs resin

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Experimental program
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Effect test

Embodiment 1

[0015] (1) 500g of polybutadiene latex (PBL, 300nm, 60wt%), 16g of disproportionated rosin soap aqueous solution with a mass fraction of 25wt%, 3g of potassium carbonate, 0.8g of initiator cumene hydroperoxide, 0.5g The reducing agent ferrous sulfate of 1 g, the co-reducing agent glucose of 1 g, the chelating agent sodium pyrophosphate of 1 g, and the water of 538 g are placed in the reaction kettle, and the room temperature is replaced with nitrogen twice, and the temperature is rapidly raised to 65° C.;

[0016] (2) After the temperature of the reactor is stabilized for 10 minutes, slowly add 150 g of styrene and 50 g of acrylonitrile dropwise to the reactor, and then add 0.2 g of the initiator cumene hydroperoxide dropwise to the reactor again after the addition is completed. The temperature of the reaction kettle was raised to 80°C and kept at a constant temperature for 0.5 hours, and then the temperature of the reaction kettle was lowered to below 50°C, and 10 g of special...

Embodiment 2

[0020] (1) 500g of polybutadiene latex (PBL, 300nm, 60wt%), 16g of disproportionated rosin soap aqueous solution with a mass fraction of 25wt%, 3g of potassium carbonate, 0.8g of initiator cumene hydroperoxide, 0.5g The reducing agent ferrous sulfate of 1 g, the co-reducing agent glucose of 1 g, the chelating agent sodium pyrophosphate of 1 g, and the water of 538 g are placed in the reaction kettle, and the room temperature is replaced with nitrogen twice, and the temperature is rapidly raised to 65° C.;

[0021] (2) After the temperature of the reactor is stabilized for 10 minutes, slowly add 150g of styrene, 50g of acrylonitrile, and 5g of epoxy vinyl monomer glycidyl methacrylate dropwise to the reactor, and then pour it into the reactor again Add 0.2g of initiator cumene hydroperoxide dropwise, raise the temperature of the reactor to 80°C for 0.5 hours, then reduce the temperature of the reactor to below 50°C, and add 10g of special antioxidant emulsion to obtain the ABS g...

Embodiment 3

[0025] (1) 500g of polybutadiene latex (PBL, 300nm, 60wt%), 16g of disproportionated rosin soap aqueous solution with a mass fraction of 25wt%, 3g of potassium carbonate, 0.8g of initiator cumene hydroperoxide, 0.5g The reducing agent ferrous sulfate of 1 g, the co-reducing agent glucose of 1 g, the chelating agent sodium pyrophosphate of 1 g, and the water of 538 g are placed in the reaction kettle, and the room temperature is replaced with nitrogen twice, and the temperature is rapidly raised to 65° C.;

[0026] (2) After the temperature of the reactor is stabilized for 10 minutes, slowly add 150g of styrene, 50g of acrylonitrile, and 10g of epoxy vinyl monomer glycidyl methacrylate dropwise to the reactor, and then pour it into the reactor again Add 0.2g of initiator cumene hydroperoxide dropwise, raise the temperature of the reactor to 80°C for 0.5 hours, then reduce the temperature of the reactor to below 50°C, and add 10g of special antioxidant emulsion to obtain the ABS ...

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Abstract

The invention discloses a preparation method of yellowing-resistant ABS (acrylonitrile butadiene styrene) resin, and belongs to the technical field of synthetic resin and plastic. The invention specifically relates to a preparation method of ABS (acrylonitrile butadiene styrene) resin with high whiteness and low yellow index. According to the invention, the ABS resin with the whiteness value greater than 66, the yellow index lower than 19 and the excellent mechanical property can be prepared. According to the invention, the technical problem is solved, and the preparation method is provided inthe synthesis process of an ABS (acrylonitrile butadiene styrene) graft emulsion, and a functional monomer with an epoxy group is introduced into the shell layer of the ABS grafted powder, by utilizing an epoxy group and a cyano group, so that the cyclization reaction between the acrylonitrile groups in the ABS resin in the heating process is relieved, so that the apparent performance of the ABSresin can be improved, for example, the whiteness can be improved, and the yellow index and the like can be reduced. The ABS resin prepared by the method can be preferentially used in a household appliance shell, automobile apparent parts and the like, and has a wide market prospect.

Description

technical field [0001] The invention belongs to the field of synthetic resins, and in particular relates to a preparation method of long-acting anti-yellowing ABS resin. Background technique [0002] ABS resin is a general-purpose polymer engineering plastic, which is formed by ternary copolymerization of butadiene, styrene and acrylonitrile. It has good mechanical properties, processing properties and solvent resistance, and is widely used in automobiles, home appliances, Packaging and other fields. ABS resin is a thermoplastic engineering plastic, which can be processed and used repeatedly. However, because the structure of the resin itself contains unsaturated double bonds and cyano groups, the ABS resin is prone to aging and degradation during multiple processing processes, resulting in a serious decline in the apparent performance of the ABS resin. , the specific performance is that its resin yellow index is high and the whiteness value decreases. Improving the yellow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/12C08L55/02C08F279/04C08F212/08C08F220/32
CPCC08F279/04C08L25/12C08L55/02C08F220/325
Inventor 刘伯军杜帅张明耀罗雪妍白阳徐璐张金辉张宇刘香池刘猛
Owner CHANGCHUN UNIV OF TECH
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