Overview of Acrylonitrile Styrene Acrylate (ASA)

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Overview of Acrylonitrile Styrene Acrylate (ASA)
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Overview of Acrylonitrile Styrene Acrylate (ASA) including background, history, advantages, limitations and typical applications.
Background: Acrylonitrile styrene acrylate (ASA) was first introduced by BASF in about 1970 as Luran S. The intent was to create a material similar to ABS but with better weather resistance. Because of this attribute acrylonitrile styrene acrylate has been used heavily in the automotive industry, as well as several other outdoor applications.

ASA Generics

- ASA
- ASA+PC
- ASA+SAN
- ASA+AMSAN
- ASA+AES
- ASA+ABS
- ASA+TPE
- ASA+PUR
- ASA+PET
- Etc...

Typical ASA Applications

- Outdoor Applications
- Automotive Exterior Parts
- Automotive Applications
- Sheet
- Profiles
- Housings
- General Purpose
- Automotive Interior Parts
- Electrical/Electronic Applications

Advantages of ASA

- Weather Resistance, Good
- Heat Resistance, High
- Impact Resistance, High
- UV Resistance, Good
- Impact Resistance, Good
- Flow, Good
- Toughness, Good
- Flame Retardant
- Processability, Good

Disadvantages of ASA

- ASA melts with other thermoplastics such as polyolefins, polystyrenes and nylons giving rise to moldings of poor strength
- Attacked by concentrated acids, aromatic and chlorinated hydrocarbons, esters, ethers and ketones
- Toxic smoke generation when burned

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