What is polyacetal made of?

Polyacetals are prepared via the polymerization of formaldehyde or the copolymerization of formaldehyde with ethylene oxide. Polyacetals are crystalline polymers that exhibit rigidity, high strength, solvent resistance, fatigue resistance, toughness, self-lubricity, and cold-flow resistance.

How is acetal resin made?

A thermoplastic polymer produced by the polymerization of formaldehyde into very long, linear oxymethylene (-O-CH2-O-CH2-) chains. Polyacetal was first produced in 1959 by DuPont under the name Delrin®. The highly crystalline resin is glossy, dense, stiff and strong.

How do you make polyoxymethylene?

To make polyoxymethylene copolymer, formaldehyde is generally converted to trioxane. This is done by acid catalysis (either sulfuric acid or acidic ion exchange resins) and concurrent removal of the trioxane by distillation or extraction.

What are acetal resins?

Acetal is a thermoplastic resin commonly used for injection molding applications. Acetal resins, or technically called polyoxymethylenes (POM), are among the strongest and stiffest of thermoplastics.

What is polyacetal used for?

Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability.

Is polyacetal a plastic?

Acetal plastic, also called polyacetal and polyoxymethylene (POM), is a general purpose, semi-crystalline, engineered thermoplastic. Acetal is commonly used for parts that need to be very stiff, have low surface friction and good dimensional stability.

Is acetal and Delrin the same thing?

Delrin is a type of acetal homopolymer and therefore generally interchangeable with others of the same class. This means that Delrin still offers the same core benefits of general acetal plastics, such as: Excellent dimensional stability.

What is polyoxymethylene urea?

Polyoxymethylene Urea is a variable molecular weight polymer formed in stages from the condensation reaction of urea with formaldehyde. It is used in a wide range of cosmetic formulations as a bulking agent and to form the outer shell of microcapsules.

What is acetal resin used for?

Acetal Copolymer resin is used in applications requiring a combination of strength, low moisture absorption, chemical resistance and dimensional stability. It’s also used for high-performance engineering components. Acetal Copolymer is widely used in the consumer electronics industry and the automotive industry.

What is another name for Delrin?

Acetal
Acetal is the common name for a family of thermoplastics with the chemical name “PolyOxyMethylene”, or POM. Acetal is available in two general types of resins: Copolymer acetal (POM-C), and homopolymer acetal (POM-H); commonly called Delrin®.