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Resin composition and process for producing molding

A technology of resin composition and production method, which is applied in the field of resin composition, and can solve the problems of not adding perfluoropolymer perfluoropolymer publicly

Inactive Publication Date: 2004-11-17
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no disclosure of using perfluoropolymers by adding them to moldable engineering plastics

Method used

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  • Resin composition and process for producing molding
  • Resin composition and process for producing molding

Examples

Experimental program
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Effect test

preparation example Construction

[0065] The preparation method of the resin composition of the present invention is not particularly limited, but includes hitherto known methods. A typical method includes preparing the fluorine-containing resin and the engineering plastics in the above-mentioned preparation ratio, and melt-kneading the resulting mixture under selective heating conditions, and the preparation process can optionally add other components .

[0066] In the compounding step, the other components may be blended with the fluorine-containing resin and / or the engineering plastic in advance, or the other components.

[0067] At the latest when the resin composition is molded, the above-mentioned fluorine-containing resin and engineering plastic should be present in a ratio within the above-mentioned range. Therefore, the formulation method includes, but is not limited to, a method including blending the fluorine-containing resin and engineering plastics at a ratio within the above-mentioned range fro...

Embodiment

[0104] The following examples are intended to further describe the present invention in detail, but should by no means be construed as limiting the scope of the present invention. It should also be understood that the formulation amount (% by mass) of the fluorine-containing resin is based on the total amount of the fluorine-containing resin and engineering plastics.

Synthetic example -1

[0106] Synthesis of FEP Copolymer

[0107] In a 1000 L glass-lined vertical autoclave equipped with a stirrer, 200 kg of pure water and 0.1 kg of ω-hydroxyl fluorocarboxylate ammonium were charged, and nitrogen replacement and vacuum degassing were carried out three times. Then, 233 kg of hexafluoropropylene (HFP) and 2.3 kg of perfluoro(propyl vinyl ether) (PPVE) were charged in the autoclave under vacuum.

[0108]Stirring was started and the temperature of the polymerization vessel was set to 29.0°C. Then, tetrafluoroethylene (TFE) was introduced to increase the pressure to 0.9 MPaG. Then 3.8 kg of di(ω-hydrodecafluoroheptanoyl) peroxide (DHP) diluted to about 8 wt% with perfluorohexane was charged into the autoclave, and the reaction started immediately after the addition.

[0109] During this reaction, TFE was supplemented to the system and the inner pressure of the autoclave was maintained at 0.9 MPaG. After 9, 18 and 27 hours of reaction, additional 0.5 kg portions of...

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Abstract

A resin composition which can have improved moldability because it attains, e.g., reductions in extrusion pressure and extrusion torque in engineering plastic molding, can stably have the moldability with respect to extrusion pressure, extrusion torque, etc., and can be easily crystallized. The resin composition is obtained by compounding an engineering plastic with a fluoropolymer, wherein the amount of the fluoropolymer is 0.005 to 1 wt.% based on the sum of the engineering plastic and the fluoropolymer and the fluoropolymer is a perfluoropolymer. The resin composition is characterized by being used in extrusion molding or injection molding.

Description

[0001] Cross-references to related applications: [0002] This application is a continuation-in-part of US Application Serial No. 09 / 989,160, filed November 21, 2001, the disclosure of which is incorporated herein by reference. field of invention [0003] The present invention relates to a resin composition useful for improving the molding processability of engineering plastics, and to a method of producing molded articles using the resin composition. Background technique [0004] Typically, moldable polymers are processed into shaped articles by melting them at high temperature in an extruder, then molding the resulting melt by means of a metal die or die, and cooling the melt. Molding techniques include, but are not limited to, extrusion molding in which molten material is conveyed to a die by a rotating screw within the barrel of an extruder for molding. [0005] In the molding of said polymers, for polymers with the same melt flowability, the extrusion pressure and extr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08L59/02C08L71/00C08L101/00
CPCC08L101/00C08G2650/48C08G65/007C08L59/02C08L71/00C08L77/06C08L2666/04C08L27/18C08L77/00
Inventor 久保胜义大塚隆英冈正彦查尔斯·W·斯图尔特宫森强
Owner DAIKIN IND LTD