Polymer Modification Improves Toughness, Uniformity, and Processability
DuPont™ Surlyn® for polymer modification is used as a processing aid and compatibilizer in PET and has a unique use as a toughener in automotive parts.
When used for polymer modification, DuPont™ Surlyn® improves toughness and adds high gloss to automotive parts, increases uniformity in incompatible PET blends, and improves PET injection and extrusion blow molding processes.
Toughening Resin for Nylon
Surlyn® is a toughening resin for polyamides (nylon 6 and nylon 66). It becomes finely dispersed (<0.3µm particle size) in nylon, enabling single screw extruders to make toughened alloys.
For example, Surlyn® is used to increase toughness in automotive parts made from nylon.
Surlyn® as nylon toughener provides:
- Excellent toughening at room temperature
- Higher modifier loadings which increase toughness
Grades are available at different toughening strengths:
- General purpose: Surlyn® 9520 and 9521
- Intermediate: Surlyn® 9020
- Super-Tough: Surlyn® 9320 and 9020 at higher loadings
Compatibilizer Resin in PET
Surlyn® 8920 as a Compatibilizer
Surlyn® can be used as a compatibilizer resin. Adding Surlyn® to incompatible PET polymer systems increases blending uniformity and enhances mechanical properties such as elongation, impact strength, and flexural (or bending) modulus. Resins that can be compatibilized with PET by using Surlyn® include LDPE, LLDPE, HDPE and other polyolefins. Adding Surlyn® with Elvaloy® AC into CPET improves low temperature impact resistance in CPET trays.
Processing Aids for PET
Surlyn® 8920 as a Nucleant
Adding Surlyn® 8920 as a nucleating agent can reduce PET crystallization temperature in the injection molding process, which can speed up solidification of the PET melt, improve parts ejection, and shorten the molding cycle time for CPET and APET food trays.
Surlyn® 8920 as a Rheology Modifier
Surlyn® 8920 can also be used as a rheology modifier to improve PET compounding and downstream fabricating processability for injection molding, blow molding, and extrusion. Surlyn® can also alter melt viscosity and melt strength, resulting in improved product appearance, product performance, and processing productivity.
With the ability to deliver high performance for a variety of uses, Surlyn® is an excellent resin for polymer modification.
DUPONT PRODUCTS & SERVICES
DuPont™ Surlyn® sealant resin provides excellent clarity, hot tack, heat seal, and toughness for packaging a variety of foods, as well as pharmaceuticals, household cleaners, and personal care products.
Elvaloy® Polymer Modifier
DuPont™ Elvaloy® for polymer modification is used to improve toughness in CPET and APET trays for frozen and refrigerated ready-to-eat meals, as a PVC plasticizer and as a compatibilizer in PET/HDPE recycling.
Nucrel® for Packaging
DuPont™ Nucrel® resin acts as a foil adhesive and heat sealant for beverage packaging, condiment and spice oil sachets, as well as non-food products including toothpaste tubes and cable shielding.
Nucrel® AE for LDPE Extrusion Coating
DuPont™ Nucrel® AE for LDPE extrusion coating improves foil adhesion when used as an LDPE modifier in pouches and sachets for food oils, snacks, and non-food products.
Surlyn® for Blow Molding
DuPont™ Surlyn® blow molding resins provide high gloss, scratch resistance, pleasant touch, and squeezability to cosmetic bottles and transparent tottles for lip gloss.
Elvax® for Packaging
DuPont™ Elvax® packaging resins provide toughness, flexibility, and clarity for snack, cheese, cereal, meat, poultry, and liquid packaging, as well as for some medical applications.
- Elvaloy® AC Acrylate Copolymer
Surlyn® for Extruded Shapes & Sheets
DuPont™ Surlyn® extrusion resin provides toughness, durability, and abrasion and chemical resistance for demanding applications, including shock tubes for mining and construction to snowshoes and wake/bodyboards.
- Surlyn® for Skin & Stretch Packaging
Surlyn® for Medical Device Packaging
DuPont™ Surlyn® for thermoforming film provides excellent clarity and formability, making it a cost-effective solution for sterilized medical device packaging.
Elvax® for Industrial & Consumer Products
The DuPont™ Elvax® Industrial EVA resin portfolio consists of a range of ethylene vinyl acetate polymers that are used in a vast array of industrial applications.
Surlyn® Reflections for Molded-In Color
Surlyn® Reflections high gloss resin is a thermoplastic alloy made up of ionomer and polyamide, enabling manufacturers to mold tough and durable, high-gloss parts that require no painting.
- Surlyn® Ionomer Resin
Fusabond® Functional Polymer
DuPont™ Fusabond® is a family of functional polymers that have been modified to help bond together dissimilar polymers used in toughened, filled and blended compounds.
- Elvaloy® Modifier Resin
Selar® Barrier Resin
DuPont™ Selar® PA amorphous nylon barrier resins provide unique oxygen barrier properties when wet or chilled
DuPont™ Purge Resin
DuPont™ Purge Resin is a fractional melt index low density polyethylene purge compound that contains various additives to assist in purging and cleaning extruders.
Entira™ Modifier Resin
DuPont™ Entira™ is a family of resin additives and modifiers used to improve performance of other plastics, often enabling significant gains in manufacturing productivity or finished goods performance.
Biomax® Resin Modifier
DuPont™ Biomax® resin modifiers respond to consumers' growing demand for materials that allow them to make responsible choices.
Foam Packaging Alternative
Coldpack’s Airliner thermally insulated pouch is a foam packaging alternative for shipping temperature-sensitive products, made with three DuPont resins.