Acrylonitrile Styrene Acrylate ASA

Acrylonitrile-styrene-acrylate (ASA) materials, 23 371 Acryloyl chloride, 2 344... 

ISO 6402-1 2002 Plastics - Acrylonitrile-styrene-acrylate (ASA), acrylonitrile-(ethylene-propylene-diene)-styrene (AEPDS) and acrylonitrile-(chlorinated polyethylene)-styrene (ACS) moulding and extrusion materials - Part 1 Designation system and basis for... 

The earliest preparation on an acrylonitrile-styrene-acrylate (ASA) polymer is believed to have taken place in 1964 (1,2). ASA was first introduced to the market by BASF in around 1970 as Luran S, based on patents from the 1960s (3-6). 

Plastics - acrylonitrile-styrene-acrylate (ASA), acrylonitrile-(ethyl-... 

Acrylonitrile-styrene-acrylate (ASA) polymers share obvious similarities with ABS but ASA was only developed in the 1960s. ASA polymers are essentially SAN polymers impact modified with an acrylate rubber. The earliest attempt to make ASA was by Herbig and Salyer of Monsanto [23] using butyl acrylate as the rubber phase. This work was then refined by Otto [24] and Siebel [25], both of BASF, who copolymerized butyl acrylate with butadiene to prepare the rubber phase. 

Acrylonitrile-styrene-acrylate (ASA) constitutes a versatile member of the group of styrenic copolymers used for housings, covers and other applications which require excellent surface appearance and environmental stability combined with high impact resistance and stiffness. It consists of a poly(styrene-acrylonitrile) matrix modified with small rubber particles. 

This latex is then processed to isolate the ABS resin, ABS thermoplastic combines good mechanical properties and heat resistance. It is used in many household appliances, automotive parts, furniture, etc. Another similar terpolymer is acrylonitrile-styrene-acrylate (ASA). It is used in automobile industry, in house construction, household appliances, etc. 

Acrylonitrile-styrene-acrylate (ASA) copolymers is another family of graft-copolymer-based materials in which the rubber phase is really a copolymer of butyl acrylate (BuA) and butadiene (at least in some recipes) [47, 48], and the matrix is made of a SAN copolymer. Originally, butadiene was not present in the rubber phase [49] and perhaps those were not really graft-copolymer-based materials. The main advantage of ASA over ABS is its increased UV stability and long-term heat resistance due to the lack of residual double bonds in the acrylate part of the rubber. 

To this group of blends belong mixtures of PP with st)oene-elastomer copolymers, styrene-diene blocks styrene-butadiene-st)a ene (SBS), sty-rene-ethylene/butylene- t30 ene (SEBS), st)rrene-isoprene-styrene (SIS), with acrylonitrile-butadiene-styrene terpol)nners (ABS), acrylonitrile-styrene-acrylate (ASA), or with EPR/EPDM grafted with styrene and acrylonitrile (AES or AXS). The first blends of this type date from the early 1960s. In these systems, PP is either the main component to be modified, or an additive to enhance performance of the styrenic matrix. 

Products like toothbrushes and digital thermometers require good UV resistance, impact resistance and aesthetic properties. If UV resistance is the primary requirement, acrylonitrile-styrene-acrylate (ASA) or PC/ASA can be considered while if impact resistance is the primary requirement, PC and PC/ABS resins can be considered. 

Acetal, Copolymer (POM Copolymer) Acrylonitrile Styrene Acrylate (ASA)... 

Acrylonitrile Methyl Acrylate (AMA) Acrylonitrile Styrene Acrylate (ASA) Bisphenol A Polycarbonate (Bisphenol A PC) Cellulose Acetate Cellulose Acetate Butyrate (CAB)... 

---