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Polyacetal resin composition stable to chlorine and chlorides and arcicle prepared therefrom

A polyacetal resin and composition technology, applied in fire rescue and other directions, can solve the problems of improvement, no description of chlorine resistance, no mention of the use of metal oxides, etc., to achieve the effect of improving chlorine resistance

Inactive Publication Date: 2005-01-05
KOREA ENG PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not state the polymer's improved chlorine resistance, nor does it mention the use of metal oxides

Method used

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  • Polyacetal resin composition stable to chlorine and chlorides and arcicle prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 0.1 parts by weight of melamine, 0.1 parts by weight of magnesium hydroxide, 0.05 parts by weight of magnesium aluminate and 0.3 parts by weight of triethylene glycol-di-3-(3-tert-butyl-4-hydroxy-5 - Methylphenyl)propionate, extruded at 230°C with a twin-screw extruder to obtain a resin composition, and then dried at 80°C for 5 hours, followed by measurement of weight loss, discoloration and foaming.

[0042] In addition, in order to measure the tensile strength, the obtained resin composition was injection-molded with an injection molding machine at 220° C. to prepare an ASTM 1-type dumbbell-shaped tensile strength test piece, and then the test piece was immersed in a chlorine-containing aqueous solution for 3000 hours. The retention of tensile strength was determined.

Embodiment 2

[0044] A resin composition was prepared following the same procedure as in Example 1. Add 0.1 parts by weight of melamine, 0.1 parts by weight of magnesium hydroxide, 0.1 parts by weight of magnesium aluminate and 0.3 parts by weight of triethylene glycol-di-3-(3-tert-butyl-4-hydroxy-5 -methyl phenyl) propionate, then use the same method as in Example 1 to measure the properties of the resin composition.

Embodiment 3

[0046] A resin composition was prepared following the same procedure as in Example 1. Add 0.1 parts by weight of melamine, 0.1 parts by weight of magnesium hydroxide, 0.1 parts by weight of magnesium aluminate, 0.3 parts by weight of triethylene glycol-di-3-(3-tert-butyl-4-hydroxy-5 - methyl phenyl) propionate and 0.15 parts by weight of ethylene bis stearamide, then use the same method as in Example 1 to measure the properties of the resin composition.

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PUM

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Abstract

Disclosed is a polyacetal resin composition stable to chlorine and chlorides, which is advantageous in terms of excellent thermal stability and chlorine resistance. The polyacetal resin composition consist of 100 parts by weight of polyoxymethylene or a copolymer thereof; 0.01-1.0 part by weight of an antioxidant; 0.01-1.0 part by weight of a thermal stabilizer; 0.01-10.0 parts by weight of metal hydroxide selected from among magnesium hydroxide, calcium hydroxide, barium hydroxide, cadmium hydroxide, aluminum hydroxide and combinations thereof; and 0.01-5.0 parts by weight of metal oxide selected from synthetic aluminum silicate, calcium oxide, magnesium oxide, aluminum oxide and magnesium aluminate. An article prepared from such a polyacetal resin composition is also disclosed.

Description

field of invention [0001] This invention relates to chlorine and chloride stable polyacetal resin compositions and articles thereof. In particular, the present invention relates to polyacetal compositions stable to chlorine-based fungicides and tap water treated with chlorine or chlorides, and articles prepared from such compositions, even when combined with said chlorine-based fungicides It also exhibits excellent resistance to direct contact between chemicals and tap water. Background of the invention [0002] Polyacetal resins have excellent mechanical properties and are extremely resistant to creep, fatigue and wear. Such resins are commonly used as engineering plastics and are mainly used in various electrical or electronic fields, automotive parts and general merchandise. In recent years, the scope of the above applications is gradually expanding. [0003] Specifically, polyacetal resin is often used in sanitary equipment, showers, conveyor belts, etc., and these de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/28C08K3/22C08K5/00C08K5/103C08K5/134C08K5/20C08K5/3492C08K5/35C08L59/00C08L59/04C08L77/00
CPCC08K5/0008C08K3/22C08L59/00C08K5/1345C08K5/34922C08K5/3492C08L77/00C08K5/134C08L2666/14C08L59/04
Inventor 金琢圭郑忠烈申奇撤
Owner KOREA ENG PLASTICS CO LTD
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