Fluoropolymer composition

A technology of fluoropolymer and composition, which is applied in the field of fluoropolymer composition, and can solve problems such as long mixing time, high temperature, and uneven distribution

Active Publication Date: 2016-06-08
SOLVAY SOLEXIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the water-insoluble nature of these ionic polymers, achieving adequate dispersion of these ionic polymers into the ECTFE powder requires long mixing times and high temperatures; despite these precautions, uneven distribution and / or other Problems can still occur, causing quality problems in subsequent processing steps

Method used

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  • Fluoropolymer composition
  • Fluoropolymer composition
  • Fluoropolymer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0110] raw material:

[0111] The following ECTFE polymers were used:

[0112] 5041 ECTFE polymer, 50 / 50 molar ratio E / CTFE with a melt flow rate of 15g / 10min-22g / 10min at 275°C under a piston load of 2.16Kg;

[0113] 3041 ECTFE polymer, 50 / 50 molar ratio E / CTFE with a melt flow rate of 1.5g / 10min-3.0g / 10min at 275°C under a piston load of 2.16Kg

[0114] 9041 ECTFE polymer, 50 / 50 molar ratio E / CTFE with a melt flow rate of 0.8g / 10min-1.3g / 10min at 275°C under a piston load of 2.16Kg

[0115] 9051 ECTFE polymer, about 47 / 53 molar ratio E / CTFE with a melt flow rate of 0.8g / 10min-1.3g / 10min at 275°C under a piston load of 5Kg

[0116] All are commercially available from Solvay Specialty Polymers.

[0117] The following polyelectrolytes (E) were used:

[0118] 270 Sodium polyacrylic acid soluble in water, with M w =3500[hereinafter referred to as polyelectrolyte (E1)];

[0119] K766 Water-soluble sodium polymethacrylate with M w =5000 [hereinafter referred to a...

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Abstract

The invention pertains to a fluoropolymer composition comprising: at least one polymer comprising recurring units derived from ethylene (E) and from chlorotrifluoroethylene (CTFE) [ECTFE polymer]; at least one water-soluble polyelectrolyte [polyelectrolyte (E)]; and at least one antioxidant compound [compound (P)], said composition having improved thermal resistance.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 825906, filed May 21, 2013, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present invention relates to fluoropolymer compositions comprising copolymers of ethylene and chlorotrifluoroethylene and certain polyelectrolytes, which compositions have improved heat resistance. Background technique [0004] Alternating copolymers of ethylene and chlorotrifluoroethylene (ECTFE) are thermoplastics with melting points in the range of 180°C to 250°C, whereby these thermoplastics are generally processed at temperatures of 220°C to 320°C. [0005] Exposure to severe thermal conditions, especially of prolonged duration, may lead to thermal decomposition of ECTFE. [0006] It is generally understood that the mechanism of decomposition involves both the generation of free radicals and direct dehydrohalogena...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L23/08C08K5/526C08L33/02
CPCC08L23/0892C08K5/526C08L33/02C08L27/12C08L2201/08
Inventor S.卡雷拉G.贝萨纳S.班迪B.L.肯特
Owner SOLVAY SOLEXIS
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