EXXELOR™Modifiers for Technical Polymers

Exxelor VA 1840Maleic anhydride functionalized elastomeric ethylene copolymer

Product description

Exxelor VA 1840 is a high-flow, semi-crystalline ethylene copolymer functionalized with maleic anhydride byreactive extrusion. Its fully saturated backbone results in outstanding thermal and oxidative stability leading toenhanced weatherability. Moreover, its elastomeric nature provides high impact resistance at room temperatureand at low temperature when blended with engineering polymers such as polyamide.

Typical properties

Property ExxonMobil Unit Exxelor VA 1840Test Method(based on)

Maleic anhydride graft level FTIR EPK-04 QT-02 Medium (*)

Melt flow index (5 kg/230 °C) ASTM D 1238 g/10 min 8.0

Density DIN 53479 g/cm3 0.88

Glass transition temperature (Tg) DSC °C - 47

Volatiles AM-S 350.03 % 0.15 max.

Color ASTM E 313-96 Yellowness Index Pellet 5

(*) MA level is typically in the range of 0.2 to 0.5 wt%The values indicated in the table describe typical properties but do not constitute specification limits.

Applications

Exxelor VA 1840 is designed to:

• Modify the impact characteristics of the fullrange of polyamides for temperatures as low as-20 °C (a function of the modifier treat level inthe blend).

• Modify the impact characteristics of otherengineering thermoplastics and technical polymers(with or without glass fibers, fillers, etc.).

• Achieve compatibility between polyolefins andmore polar polymers that are capable ofinteracting with maleic anhydride.

Important information and disclaimer on following page. EUROPE May 2003 EE 076 1.2

with 25 wt% VA 1840neat PA-6,6

3020100-10-20-30-400

102030405060708090

100

Temperature (°C)

Not

ched

Izod

Imp

act

(KJ/

m2 )

Impact strengthof PA-6,6/Exxelor VA 1840 (75/25) blends

Typical values

EUROPE May 2003 EE 076 2.2

©2003 Exxon Mobil Corporation. To the extent the user is entitled to disclose and distribute this document, the user may forward, distribute, and/or photocopy this copyrighted document only if unalteredand complete, including all of its headers, footers, disclaimers, and other information. You may not copy this document to a Web site. ExxonMobil does not guarantee the typical (or other) values.Analysis may be performed on representative samples and not the actual product shipped. The information in this document relates only to the named product or materials when not in combination withany other product or materials. We based the information on data believed to be reliable on the date compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, themerchantability, fitness for a particular purpose, suitability, accuracy, reliability, or completeness of this information or the products, materials, or processes described. The user is solely responsible for alldeterminations regarding any use of material or product and any process in its territories of interest. We expressly disclaim liability for any loss, damage, or injury directly or indirectly suffered or incurredas a result of or related to anyone using or relying on any of the information in this document. There is no endorsement of any product or process, and we expressly disclaim any contrary implication. Theterms, "we", "our", "ExxonMobil Chemical", or "ExxonMobil" are used for convenience, and may include any one or more of ExxonMobil Chemical Company, Exxon Mobil Corporation, or any affiliates theydirectly or indirectly steward. The ExxonMobil Chemical Emblem, the "Interlocking X" Device, Exxelor, Exxon and ExxonMobil are trademarks of Exxon Mobil Corporation.

Processing

Exxelor VA 1840 can be added to polyamide to achieve optimum dispersion within the polymer matrix (averageparticle size below 1 µm) in order to obtain the best performance. This can be achieved easily because of the lowviscosity of the product. Compounding parameters that can lead to optimized performance include extruder type,screw design, barrel temperature, screw speed, throughput and residence time.

Our experienced technical service engineers and chemists are always on hand to help you in achieving the bestperformance from your processing and compounding operations.

Example of active and homogeneous particle size distribution ofExxelor VA 1840 in a PA-6 matrix

Storage and handling

Comprehensive material safety data sheets areprovided to recommend safe practices during usage.For easy handling and storage, Exxelor VA 1840 issupplied as free-flowing pellets normally packed in 25kg bags (50 bags per pallet) or 1 ton supersacks.

Regulatory food-contact status

Please contact your ExxonMobil Chemical repre-sentative for detailed regulatory food-contact statusinformation and/or actual compliance certification.

240 °C260 °C280 °CPA-6 -260 °CPA-6,6 -280 °C

Vis

cosi

ty (P

a.s)

VA 1840 Melt Rheology

Shear Rate (1/s)

10 100 1000 1000010

100

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