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Impact-resisting modifying agent with improved adhesive-durability

A technology of impact resistance and modifiers, which is applied in the field of impact modifiers with improved blocking resistance, and can solve problems such as adhesion

Inactive Publication Date: 2004-12-01
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the powder properties of the graft copolymer synthesized by this method, especially during transfer and transportation, the powdery polymer becomes solid, that is, there is a problem of adhesion, and further improvement is strongly required.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Graft copolymer with hollow rubber component

[0048] (1) Manufacture of seed crystal portion of rubber latex

[0049] 200 parts of water, 3.5 parts of sodium oleate, 0.4 parts of tripotassium phosphate, 0.2 parts of sodium salt of β-naphthalenesulfonic acid formaldehyde condensate, 0.005 parts of sodium edetate, ferrous sulfate (FeSO 4 ·7H 2 O0.002 parts, 10 parts of tert-dodecyl mercaptan, 25 parts of styrene, and 75 parts of butadiene are mixed, the temperature is raised to 50 ° C, and then 0.1 parts of p-menthane hydroperoxide and 0.1 parts of sodium formaldehyde sulfoxylate are added , polymerized for 15 hours to obtain a rubber latex (R-1) with an average particle diameter of 0.06 μm.

[0050] (2) Manufacture of graft copolymer with hollow rubber component

[0051] 10 parts (solid portion) of rubber latex (R-1) and 70 parts of water were mixed. Using a homogenizer, a mixture of 75 parts of butyl acrylate, 7.5 parts of allyl methacrylate, 19 parts of toluene, 0...

Embodiment 2

[0057] Add 80 parts of 5% calcium chloride aqueous solution to 100 parts (solid parts) of the latex of the hollow graft copolymer (G-1) to make it coagulate, and then add 300 parts of pure water to obtain a coagulated slurry with an average particle diameter of 200 μm . While stirring the obtained solidified slurry, raise the temperature of the liquid to 30-50°C, add 0.75 parts of the latex solid content of the cross-linked polymer (L-1), then raise the temperature of the liquid to 40°C-60°C, and then add 1.5 parts of potassium hexadecanoate solids were heat-treated at 95° C. for 5 minutes, then dehydrated and dried to obtain a powder of impact modifier with an average particle diameter of 100 μm.

Embodiment 3

[0059]In Example 1, the powder of Example 3 was obtained in the same manner as in Example 1, except that 1.5 parts of solids of the cross-linked polymer (L-1) latex was added.

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PUM

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Abstract

A resin composition suitable as an impact modifier for thermoplastic resins, which has an excellent blocking resistance improved without lowering the effect of improving the impact resistance and which comprises 100 parts by weight of a graft copolymer containing a hollow rubber component and at least two additives selected from the group consisting of 0.1 to 10 parts by weight of a higher fatter acid soap, 0.1 to 10 parts by weight of a crosslinked polymer of 0.1 to 100% by weight of a crosslinking monomer and 0 to 99.9% by weight of a vinyl monomer and 0.001 to 5 parts by weight of a silicone oil.

Description

Technical field [0001] The present invention relates to the improvement of blocking resistance of impact modifier powder resins for thermoplastic resins. Background technique [0002] Various methods of improving the impact resistance of thermoplastic resins have been proposed. Cracking and shear yielding play an important role in improving impact resistance, but when the above problems occur, stress concentration in the molded body is essential. For this reason, compounding rubber containing Constituents of graft copolymer for improved impact resistance. On the one hand, it is known that rubber particles have pores (Ikuo Narusawa, "Shock Resistance of Plastics", pages 131 and 155, published by Sigma Co., Ltd.). Furthermore, improvement of the impact resistance of a thermoplastic resin molded article has recently been studied using a graft copolymer having a hollow rubber component. [0003] For example, Japanese Patent Laid-Open No. 10-310714 proposes to use hollow parti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00C08K5/098C08L27/24C08L33/06C08L51/04C08L51/08C08L83/04C08L101/00
CPCC08K5/098C08L51/04C08L27/24C08L51/08C08L33/06C08L2666/24C08L2666/02
Inventor 水田利雄佐藤彰雄桥本友道角谷光雄高木彰
Owner KANEKA CORP