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Polymer processing aid and method for processing polymers

一种加工助剂、聚合物的技术，应用在体融加工各种高聚物的助剂和加工领域，能够解决聚合物的方法和助剂组合物未满足等问题，达到消除薄膜条纹现象、减少浑浊、减少或消除口型泄漏的效果

Inactive Publication Date: 2005-02-02
SAINT GOBAIN CERAMICS & PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, improvements in various polymer processing aids and processing methods are under constant investigation; however, improved and / or additional effective processing aids are not commercially available.
Therefore, there is a long-felt and as yet unmet need for new and improved methods of processing polymers and adjuvant compositions

Method used

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  • Polymer processing aid and method for processing polymers
  • Polymer processing aid and method for processing polymers
  • Polymer processing aid and method for processing polymers

Examples

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Embodiment

[0060] The following examples will provide further guidance to those skilled in the art in the practice of the invention. The examples provided are merely representative of those which assist in the practice of the invention. Accordingly, these examples are not intended to limit the invention as defined by the appended claims.

[0061] General steps for masterbatch preparation

[0062] Both the fluoroelastomer and the boron nitride were mixed in powder form in a suitable ratio in a V-type mixer with reinforcing rods at 10 revolutions per minute. The fluoroelastomer / BN mixture is then mixed with polyethylene, preferably also in powder form. After mixing in a suitable mixer, it is melted and extruded to form pellets of various sizes.

[0063] The extrusion operation was carried out in a single-pass Farrell mixer, followed by a melt extrusion pelletization process. Alternatively, the extrusion operation can be carried out together with the pelletizing process in a twin-screw ...

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Abstract

In an exemplary embodiment, the present method includes the stops of providing a polymer resin to be processed: blending particulate boron nitride (BN) and a fluorine-containing polymer with said polymer resin to provide a resin blend: heating said resin blend to obtain a desired flowability valve: and processing said resin blend into a desired shape.

Description

field of invention [0001] The present invention relates to a method and a composition for processing high polymers, more specifically to an auxiliary agent and a processing method for body-melt processing various high polymers. Background of the invention [0002] Polyolefins and other polymers are processed into films, sheets or pipes by extrusion. In this process, the polymer is melted in an extruder and extruded into the desired shape. [0003] For economical reasons, it is always desirable that the extruder be able to pass the maximum possible throughput. One way to increase the output of an extruder is to increase the speed of the screw. However, the melt viscoelasticity of the melt generally limits the throughput in this method, which is far below the theoretical throughput of the machine. More specifically, if the extrusion speed exceeds a certain value depending on the polymer to be processed, so-called melt fracture defects will appear on the surface of the extru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08J9/00C08K3/38C08L23/08C08L27/12
CPCC08L27/12C08L2205/06C08J9/0066C08K3/38C08J2327/12C08L23/0815C08K2003/385C08L2666/04
Inventor E·A·普鲁斯T·M·克丽尔S·K·兰达
Owner SAINT GOBAIN CERAMICS & PLASTICS INC
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