Thermoplastic resin composition for cleaning molding machine

A technology of thermoplastic resin and molding processing, which is applied in the field of thermoplastic resin composition for cleaning molding processing machines, can solve problems such as insufficient cleaning performance, and achieve the effects of excellent cleaning performance, excellent removal performance, and excellent replacement performance

Inactive Publication Date: 2011-08-31
DAICEL POLYMER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned cleaning agents are intended for cleaning olefin resins, but the cleaning performance is not sufficient. In addition, since inorganic fillers are mixed, it is difficult to replace polypropylene resins.
[0003] Japanese Patent Laying-Open No. 4-246443 discloses a cleaning resin composition obtained by mixing a polyolefin resin, an acrylic copolymer, a neutral salt of an organic sulfonic acid, magnesium carbonate, magnesium hydroxide, etc. , its cleaning performance is not sufficient
[0004] In Japanese Patent Application Laid-Open No. 7-329113, it is disclosed that in olefinic thermoplastic resins, carboxylic acid derivatives having unsaturated groups are used to modify olefinic resins, polyepoxides, or polyalkylene glycol surface active compounds. Resin composition for cleaning molding machines of additives and fatty acid metal salts, but its cleaning performance is insufficient
[0005] In Japanese Patent No. 3784506, a cleaning agent containing polyamide, ethylene-unsaturated carboxylic acid copolymer resin and Group II metal salt of the periodic table is disclosed, but it is difficult to replace polypropylene resin

Method used

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  • Thermoplastic resin composition for cleaning molding machine

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Experimental program
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Effect test

Embodiment 1～4、 comparative example 1～4

[0037] The components of the composition shown in Table 1 were mixed using a drum mixer, and then melt-kneaded by an extruder to obtain a granular cleaning resin composition. Using the above-mentioned composition, a cleaning test was carried out according to the following method. The results are shown in Table 1.

[0038] (cleaning)

[0039] 1 kg of a blackened product (dry colorant; carbon black concentration 2%) of polypropylene resin (Prime Polypro J-2000GP manufactured by Prime Polymer Co., MFR21), which was previously used as a resin, was poured into an injection molding machine (" Mitsubishi injection molding machine 265 / 100MSII"; barrel temperature 250°C). Then, each cleaning resin composition having the composition in Table 1 was poured, and evaluated by the amount of the composition used until the black color disappeared (confirmed by visual inspection).

[0040] (Substitution for polypropylene resin)

[0041] After cleaning, 1 kg of polypropylene resin (Prime Pol...

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Abstract

Disclosed is a thermoplastic resin composition which is excellent as a cleaning agent for cleaning molding machines. Specifically disclosed is a thermoplastic resin composition for cleaning molding machines, which contains, per 100 parts by mass of a polypropylene resin having an MFR of 0.1 to 1.0 g/10 min, (A) 5 to 60 parts by mass of an ethylene-acrylic copolymer, (B) 2 to 60 parts by mass of an unsaturated carboxylic acid-modified polyolefin resin, and (C) 1 to 10 parts by mass of a surfactant.

Description

technical field [0001] The present invention relates to a molding processing machine cleaning thermoplastic resin composition excellent in cleaning properties of molding processing machines such as extruders and injection molding machines. Background technique [0002] In Japanese Patent No. 3179190, a cleaning agent obtained by mixing an inorganic filler and a chemical foaming agent in an ethylene-unsaturated carboxylate copolymer is disclosed. Cleaning agent for ethylene-unsaturated carboxylate copolymers, inorganic fillers, chemical foaming agents, and slip agents. The above-mentioned cleaning agents are intended to clean olefin resins, but their cleaning properties are not sufficient, and since they contain inorganic fillers, it is difficult to replace polypropylene resins. [0003] Japanese Patent Laying-Open No. 4-246443 discloses a cleaning resin composition obtained by mixing a polyolefin resin, an acrylic copolymer, a neutral salt of an organic sulfonic acid, magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/72C08K5/42C08L23/06C08L23/08C08L23/12C08L23/26
CPCC08K5/42C08L51/06B29C33/722C08L23/0869C08L23/10
Inventor 胁田直树
Owner DAICEL POLYMER LTD
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