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900901 Sigma-Aldrich

Hyflon® AD 40L

Synonym: Amorphous perfluoropolymer, P(TTD-TFE), Poly(tetrafluoroethylene-co-2,2,4-trifluoro-5-trifluoromethoxy-1,3-dioxole), TTD-TFE copolymers

  • CAS Number 161611-79-6

  • Linear Formula (C4F6O3)n(C2F4)m

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Properties

Related Categories Actuators, Bioelectronics, Ferroelectric Polymers, Flexible Organic Transistors, Fluorocarbons,
description   Specific gravity: 1.98 (ASTM D792)
form   powder
composition   TTD content, 40 ±5 mol % by
intrinsic viscosity parameters   40 ±10 cc/g, 30 °C (ASTM D2857)
refractive index   n/D 1.331 (ASTM D542)
transition temp   transition temp 90 °C (ASTM D3418, Glass)

Description

General description

Hyflon® AD 40L is an amorphous perfluoropolymer available in powder form.

• Amorphous glassy polymer structure.
• Solubility in perfluorinated solvents.
• Low dielectric constant of 2.0 at 1 kHz.

Excellent optical properties
• High UV transmittance.
• Low refractive index.

Hyflon® AD can provide uniform and thin films or coatings (down to submicron thickness if required) by casting or coating techniques and thermal treatments, well below the typical baking temperatures of semicrystalline perflouropolymers.

Key features of Hyflon® AD amorphous perfluoropolymers:
• High temperature stability.
• Good chemical resistance.
• Excellent hydrophobicity.
• Very low surface energy.
• Low dielectric constant.
• Very high gas permeability and selectivity.
• Outstanding optical properties (e.g. high UV transmittance, low refractive index).

Examples of typical applications include:
• Protective coatings.
• Interlayer dielectric films and pellicles for electronics.

Legal Information

Hyflon is a registered trademark of Solvay Group

Safety & Documentation

Safety Information

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