Aldehyde inhibitor composition and polyacetal resin composition

A technology of polyacetal resin and composition, which is applied in the fields of aldehyde inhibitor composition and polyacetal resin composition, can solve problems such as damage to product quality or appearance, discoloration of carboxylic acid hydrazide, etc., and achieve characteristic improvement and increase Quality, improve the effect of the surrounding environment

Inactive Publication Date: 2007-01-24
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, carboxylic acid hydrazide may change color under the action of heat or coexistence with other chemical substances, which will damage the quality or appearance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0150] (Manufacturing method of polyacetal resin composition)

[0151] The polyacetal resin composition of the present invention can be powder granular mixture or molten mixture, can polyacetal resin, above-mentioned suppressor composition, and other additives [stabilizer (antioxidant, processing stabilizer, heat-resistant Stabilizers and weathering (light) stabilizers), impact modifiers, gloss control agents, slipperiness modifiers, coloring agents and / or fillers] are prepared by mixing by a usual method. The inhibitor composition may be prepared by mixing carboxylic acid hydrazide and metal salt of hydroxypolycarboxylic acid in advance, and then mixing other components (polyacetal resin and additives used if necessary), or mixing each component with the above-mentioned other components.

[0152] The polyacetal resin composition, for example, can adopt the following method: (1) All the ingredients are fed from the main feeding port, mixed and extruded by an extruder (single-s...

Embodiment 1-3 and 5-18

[0186] According to the ratio shown in table 1, in 100 parts by weight of polyacetal resin copolymer, premix carboxylic acid hydrazide, hydroxy polycarboxylic acid metal salt, antioxidant, processing stabilizer, heat-resistant stabilizer, colorant, weather resistance ( light) stabilizer, then drop into the main feed inlet of a 30mm diameter twin-screw extruder with a decompression vent, melt mixing (extrusion conditions: L / D=35, extrusion temperature=200°C, screw Number of rotations = 100 rpm, exhaust vacuum = 70 cm Hg (93.1 kPa), discharge rate = 15 kg / hour, average residence time 100 seconds), and prepared into a granular composition. The obtained pellets were molded into predetermined test pieces by an injection molding machine, and the processing stability (discoloration of the molded product) and the formaldehyde generation amount of the test pieces were evaluated. The results are shown in Table 1 and Table 2.

Embodiment 4

[0188] According to the ratio shown in table 1, in the polyacetal resin copolymer of 95 parts by weight, premix hydroxypolycarboxylic acid metal salt, antioxidant, processing stabilizer, drop into the 30mm diameter double tank that has a decompression exhaust port then The main feeding port of the screw extruder, and 5 parts by weight of polyacetal resin copolymer and 0.1 part by weight of carboxylic acid hydrazide were added from the side feeding port, and melted and mixed to make a granular composition. The obtained pellets were molded into predetermined test pieces by an injection molding machine, and the processing stability (discoloration of the molded product: hue) and the formaldehyde generation amount of the test pieces were evaluated. The results are shown in Table 1.

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Abstract

An aldehyde inhibitor composition for suppressing aldehyde produced by an aldehyde-generating source is composed of carboxylic acid hydrazide, 0.01-100 parts by weight of hydroxy polycarboxylic acid metal salt (citric acid, malic acid) relative to 1 part by weight of the carboxylic acid hydrazide Or salts of tartaric acid and alkaline earth metals, etc.). A polyacetal resin composition may also be formed by combining a polyacetal resin with 0.001 to 20 parts by weight of the above-mentioned inhibitor composition relative to 100 parts by weight of the polyacetal resin. Antioxidants, heat-resistant stabilizers, processing stabilizers, weather-resistant (light) stabilizers, impact resistance modifiers, gloss control agents, slippery modifiers, colorants, fillers, and the like may be added to the resin composition. Even if the above-mentioned aldehyde inhibitor composition is added to polyacetal resin and used, it does not discolor the resin and can effectively suppress the generation of aldehydes by adding a small amount.

Description

technical field [0001] The present invention relates to an inhibitor composition capable of effectively reducing or inhibiting the production of aldehydes from an aldehyde-generating source, a polyacetal resin composition mixed with the inhibitor composition and a preparation method thereof, and the above-mentioned polyacetal resin composition Formed products. Background technique [0002] In recent years, aldehydes such as formaldehyde, acetaldehyde, and acrolein have attracted attention as one of factors that have adverse effects on the environment or health. Conventionally, these aldehydes have been used as raw materials for adhesives or resins (phenolic resins, melamine resins, urea resins, furan resins, xylene resins, polyacetal resins, etc.), preservatives, and the like. It is also known that oxidation of a polyester resin (polyethylene terephthalate, polytrimethylene terephthalate, etc.) can generate acetaldehyde or acrolein as a raw material monomer oxide. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08K5/25C08K5/092A61L9/01B01J20/22C09K3/00C08J3/22C08J5/00C08K5/098
CPCC08K5/098B01J20/20B01J20/103B01J20/22B01J2220/44C08L59/00C08K5/25B01J2220/46B01J20/18B01J20/3242B01J20/08C08K5/09
Inventor 原科初彦
Owner POLYPLASTICS CO LTD
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