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Polyacetal resin composition

一种聚缩醛树脂、聚缩醛共聚物的技术，应用在聚缩醛树脂组合物领域，能够解决热稳定性和耐光性降低、难耐候性、聚缩醛树脂材料尚未得知等问题，达到耐候(光)性优异的效果

Inactive Publication Date: 2010-12-08
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, if these technologies are simply combined, the synergy of effects cannot be achieved. Especially when hindered phenols and hindered amines are used together, thermal stability and light resistance will be reduced due to antagonism, and it is extremely difficult to obtain excellent weather resistance. It is a resin material that significantly suppresses the occurrence of formaldehyde and formaldehyde, and does not cause problems such as poor appearance due to bleeding of compounding components.
[0009] In addition, methods of giving polyacetal resins a metallic appearance are only known to the extent of spraying or plating moldings, and polyacetal resin materials that can be used to impart a metallic appearance without such secondary processing have not been known

Method used

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Embodiment 1-9

[0100] According to the ratio shown in Table 1, 100 parts by weight of polyacetal copolymers with specific polymer quality indicators are premixed with hindered phenolic antioxidants, guanamine compounds, hindered amine stabilizers, ultraviolet absorbers, fatty acid Fatty acid esters formed with polyalkylene glycol, polyalkylene glycol, and other compounds are then added to the main feed port of a 30mm diameter twin-screw extruder with a vent port, and melted and mixed (Extrusion conditions: L / D=35, extrusion temperature=200° C., screw rotation speed=120 rpm, exhaust vacuum=-700 mmHg, discharge amount=18 kg / hr) to prepare a granular composition. And in 100 parts by weight of the granular composition, the required parts by weight of aluminum pigment are blended, and added to the main feed port of a 30mm diameter twin-screw extruder with a vent port again, melted and mixed (extrusion conditions : L / D=35, extrusion temperature=200° C., screw rotation speed=120 rpm, exhaust vacuum...

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Abstract

Disclosed is a polyacetal resin composition which has metallic appearance, which can be molded into an article that generates a volatile organic compound (a VOC), particularly formaldehyde, therefrom at an extremely low level, and which has excellent weather resistance. Specifically, the polyacetal resin composition comprises: (A) 100 parts by weight of a polyacetal copolymer having a hemiformal terminal group at a content of 1.0 mmol / kg or less, a formyl terminal group at a content of 2.0 mmol / kg or less and an unstable terminal group at a content of 0.5 wt% or less; (B) 0.03 to 0.30 parts by weight of a hindered phenol antioxidant agent; (C) 0.01 to 1 part by weight of a guanamine compound; (D) 0.2 to 1 part by weight of a hindered amine stabilizer; (E) 0.1 to 1 part by weight of an ultraviolet ray absorber; and (F) 1 to 20 parts by weight of a metallic pigment.

Description

technical field [0001] The present invention relates to a polyacetal resin composition which has a metallic appearance, significantly suppresses the generation of volatile organic compounds (VOC), and is excellent in weather (light) resistance. The resin composition can be suitably used for interior materials of automobiles and the like. Background technique [0002] Polyacetal resin has various excellent properties, and its molded products can be used in a wide range of fields. However, with the rapid advancement of technology in the field of use, there is a tendency to require high characteristics for the polyacetal resin material used. . As such requirements, in the application field of automotive interior parts, etc., there are also those that are required to have excellent thermal stability, a small amount of volatile organic compounds derived from resins, excellent weather resistance, and a metallic appearance to impart a sense of luxury. The voice of polyacetal resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08K3/08C08K5/101C08K5/20C08K5/3435C08K5/3475C08K5/3477
CPCC08K5/34C08L59/02C08K5/13C08K2201/014C08K3/08C08L59/00
Inventor 长谷宽之
Owner POLYPLASTICS CO LTD
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