POM (Polyoxymethelene)

 
Formula chimica POM

Polyoxymethylene (POM) also known as acetal resin or polyformaldehyde is a crystalline thermoplastic polymer. It is used where excellent dimensional stability, low friction and high resistance are required. Repeating chains are composed of a methylene group and an oxygen atom. The material is very resistant with a relatively low cost. It has a very low friction coefficient and excellent thermal resistance.

Chemical formula POM: (CH2O)n
CAS Number POM: 9002-81-7
Chemical Name POM (IUPAC): poly(oxymethylene)
Recycling Code POM: number 7
Recycling Symbol POM: simbolo riciclo POM

POM commercial names and producers:

 

  • Bergaform (PolyOne)
  • Celcon (Celanese)
  • Delrin (DuPont)
  • Duracon (Polyplastics)
  • Formocon (Formosa Plastics)
  • Heraform (Radici)
  • Hostaform (Celanese)
  • Isoform (Sirmax)
  • Isotal (Sabic)
  • Iupital (Mitsubishi)
  • Kematal (Celanese)
  • Kepital (KEP)
  • Kocetal (Kolon)
  • Latan (Lati)
  • Lucel (LG Chemical)
  • Polyform (Polykemi)
  • Rialform (Rya-Polymers)
  • Sabic POM (Sabic)
  • Ultraform (BASF)
  • Tarnoform (Azoty)
  • Tenac (Asahi)

POM European Distributors:

 

  • BIGLER (Kepital, Heraform)
  • Schulman (Schulaform, Lucent, Accucomp)
  • Mega Polymers (Celcon, Delrin, Hostafrom, Kepital, Tenac, Ultraform)
  • Tekuma (Kepital)
  • KD Feddersen (Hostaform)
  • PolyOne (Delrin)
  • ALBIS (Alcom, Ultraform)
  • Biesterfield (Delrin)
  • Nexeo (Electrafil, HiFill, InLube, Lubricomp, Lubriloy, Stat-kon, Thermocomp, Plaslube, Ultraform)
  • RESINEX (Hostaform, Resinex POM)
  • Ultrapolymers (Tenac-C, Ultraform, Latan, Latilub, Latiohm, Latishield, Latistat, Luvocom, Lubricomp, Lubriloy, Stat-kon, Stat-loy, Thermocomp, Kepital, Tenac,)
  • TER Plastics (Duracon, Tarnoform)

Main compound POM:

 

  • POM-GF30 (Polyoxymethelene with 30% fibre glass)
  • POM with lubricant

 

 

Chemical and physical properties:

POM is used a lot for its excellent mechanical characteristics. It has an excellent creep resistance, low friction, and excellent performance at low temperatures. However, chemically it has some disadvantages such as easy combustion and the production of toxic fumes which consequently severely limit its field of use. POM is divided into two main categories, POM homo, and POM copo which differentiates itself from the former by the presence of groups –CH2CH2O–.

POM standard density: 1,35 - 1,44 g/cm3 (ISO 1183)
POM melting point Tm: 165 - 185 °C
POM glass transition temperature Tg: -50 °C

 

POM market applications

 

  • gears
  • precision mechanics
  • screws
  • plumbing
  • piping
  • zips
  • electronics
  • automotive
  • medical
  • construction
  • clothing
  • musical

POM transformation technologies

 

  • Blow-molding,
  • Compression molding
  • Extrusion
  • Injection molding
  • Rotational molding

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Polymer

POM polyoxymethylene (acetal) resin

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

POM MFI 9 NATURAL
granule/pellet Natural / Neutral 22500 Kg bags on pallet 1.79 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

MC90
granule/pellet Natural / Neutral 27000 Kg bags on pallet 3.30 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

First choice - Slow moving QUALITY-PRIME QUALITY-PRIME

KEPITAL F20-03
granule/pellet Natural / Neutral 4500 Kg bags on pallet 1.98 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

HOSTAFORM
regrinded Miscellaneous 20000 Kg bigbag 1.000-1.100 kg 0.80 €/Kg
 

Polymer

POM polyoxymethylene (acetal) resin

POM MFI 9 NATURAL

22500 Kg 1.79 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

MC90

27000 Kg 3.30 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

KEPITAL F20-03

4500 Kg 1.98 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

HOSTAFORM

20000 Kg 0.80 €/Kg