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

Recycled /Regrinded QUALITY-RECYCLED QUALITY-RECYCLED

Delrin 900P NC010
regrinded White 1274 Kg bags on pallet 0.50 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

First choice - Slow moving QUALITY-PRIME QUALITY-PRIME

DELRIN DE 12017 BLACK602
granule/pellet Black 2975 Kg bags on pallet 6.00 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

First choice - Slow moving QUALITY-PRIME QUALITY-PRIME

KEPITAL MX25BT03
granule/pellet Natural / Neutral 375 Kg bags on pallet 4.92 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

Recycled /Regrinded QUALITY-RECYCLED QUALITY-RECYCLED

HOSTAFORM M25AE
regrinded Black 651 Kg bigbag 1.000-1.100 kg 0.46 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

Off specs QUALITY-PRIME QUALITY-PRIME

DELRIN 500 NC010
granule/pellet Natural / Neutral 3000 Kg bags on pallet 3.15 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

First choice - Slow moving QUALITY-PRIME QUALITY-PRIME

Delrin 500P NC010
granule/pellet Natural / Neutral 250 Kg bags on pallet 5.50 €/Kg
 

Polymer

POM polyoxymethylene (acetal) resin

Delrin 900P NC010

1274 Kg 0.50 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

DELRIN DE 12017 BLACK602

2975 Kg 6.00 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

KEPITAL MX25BT03

375 Kg 4.92 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

HOSTAFORM M25AE

651 Kg 0.46 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

DELRIN 500 NC010

3000 Kg 3.15 €/Kg

Polymer

POM polyoxymethylene (acetal) resin

Delrin 500P NC010

250 Kg 5.50 €/Kg