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Polyphenylene ether composition, method for the manufacture thereof, and articles comprising the composition

A technology of composition and copolymer, applied in the direction of layered products, etc., can solve the problems of insufficient reinforcement of glass fiber and non-existence

Pending Publication Date: 2020-07-28
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the melt processing of complex parts using fiber-reinforced plastic compositions often results in parts that do not have the aforementioned fiber orientation or exhibit so-called "flow marks" (merge lines, welds) produced by two colliding melt flow fronts. lines, knitlines)” components, thereby providing a form where glass fibers are generally not sufficiently reinforced in the flow mark region

Method used

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  • Polyphenylene ether composition, method for the manufacture thereof, and articles comprising the composition
  • Polyphenylene ether composition, method for the manufacture thereof, and articles comprising the composition
  • Polyphenylene ether composition, method for the manufacture thereof, and articles comprising the composition

Examples

Experimental program
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Embodiment

[0046] Table 1 describes the materials used in the following examples.

[0047] Table 1

[0048]

[0049]

[0050] The compositions of the following examples were prepared by melt blending in a Werner & Pfleiderer 30 mm ID twin-screw extruder operating at 250 rpm and a material throughput of about 16 kg / hr (35 lb / hr). Using a separate feeder, the glass fibers are fed to the downstream valve while all other solid components are added at the feed throat. The extruder temperature was maintained at 240°C (464°F) in zone 1 (the most upstream zone), at 260°C (500°F) in zones 2-10 and at 288°C (die) in the die (die). 550°F). Torque remains at 65%. The mixed extrudates were cooled and pelletized by strand-cutting.

[0051] All materials were blended together and fed through the main feeder. The extruded strips of composition are cut into pellets and dried. Test articles were injection molded on a 120 ton VanDorn injection molding machine using a barrel temperature of 304°C...

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Abstract

A composition useful for the injection molding of fluid engineering parts includes specific amounts of a poly(phenylene ether), a homopolystyrene, a hydrogenated block copolymer of an alkenyl aromaticmonomer and a conjugated diene, a linear low density polyethylene, and a reinforcing filler. A method of making the composition and articles prepared from the composition are also described.

Description

Background technique [0001] Poly(phenylene ether) (polyphenylene ether, poly(phenylene ether)) resins are a class of plastics known for their excellent water resistance, dimensional stability, and inherent flame retardancy. Properties such as strength, hardness, chemical resistance, and heat resistance can be tailored to suit a variety of consumer products such as plumbing fixtures, electrical boxes, automotive parts, and coated wire by blending it with a variety of other plastics and additives ) needs. [0002] In order to eliminate lead inclusions commonly present in brass used to manufacture fluid engineering articles, poly(phenylene ether) compositions have been used as brass substitutes. See, eg, US Patent Application Publication No. US 2008 / 0312371 Al by Todt et al. It is also desirable to eliminate monomeric butadiene from materials that come into contact with food and water. Many poly(phenylene ether) compositions used in fluid engineering articles contain rubber-mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/12B32B1/08
CPCB32B1/08C08L25/06C08L71/123C08K3/013C08L23/06C08L53/02C08L53/025C08K3/04C08K3/40C08K7/06C08K7/14
Inventor 李庭妸克里斯托弗·瑞安·齐格勒克里斯蒂安·亨里克斯·约翰尼斯·科弗茨
Owner SHPP GLOBAL TECH BV
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