EXXELOR™Modifiers for Technical Polymers

Exxelor VA 1803Maleic anhydride functionalized elastomeric ethylene copolymer

Product description

Exxelor VA 1803 is a high flow, amorphous ethylene copolymer functionalized with maleic anhydride by reactiveextrusion. Its fully saturated backbone results in outstanding thermal and oxidative stability leading to enhancedweatherability. Moreover, its amorphous nature exhibits impact resistance at very low temperatures in blends withengineering polymers such as polyamide.

Typical properties

Property ExxonMobil Unit Exxelor VA 1803Test Method(based on)

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

Melt flow rate (2.16 kg/230 °C) ASTM D 1238 g/10 min 3

Melt flow rate (10 kg/230 °C) ASTM D 1238 g/10 min 22

Density DIN 53479 g/cm3 0.86

Glass transition temperature (Tg) DSC °C - 57

Volatiles AM-S 350.03 % 0.15 max.

Color ASTM E 313-96 Yellowness Index Pellet 25 max.

(*) MA level is typically in the range of 0.5 to 1.0 wt%The values indicated in the table describe typical properties but do not constitute specification limits.

Applications

Exxelor VA 1803 is designed to:

• Modify the impact characteristics of the fullrange of polyamides for temperatures as low as-40 ºC (a function of the modifier treat level inthe blend).

• Offer the best balance between stiffness and lowtemperature performance in polyamide blends.

• Modify the impact characteristics of otherengineering thermoplastics and technicalpolymers (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 068 1.2

with 20 wt% VA 1803neat PA-6,6

3020100-10-20-30-400

50

100

Temperature (°C)

Not

ched

Izod

con

diti

oned

(KJ/

m2 )

Impact strength:PA-6,6/Exxelor VA 1803 (80/20) blend

Typical values

EUROPE May 2003 EE 068 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.

Performance enhancements in polyamide blends include:

• Outstanding notched Izod impact resistance at room temperature• Consistent and very high notched Izod impact resistance down to -40 ºC• Improved flexibility• Reduced moisture sensitivity and improved dimensional stability allowing the production of molded parts

with different wall thicknesses• Improved assembly of freshly molded parts• Increased impact resistance of glass-reinforced compositions

Processing

Exxelor VA 1803 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. Its low viscosity makes it particularly suitable forprocessing glass-reinforced PA compositions. Compounding parameters that can lead to optimized performanceinclude 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 a fine dispersion of Exxelor VA 1803in a 30% GF 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 1803 issupplied as free-flowing pellets in 25 kg bags placedin specially designed boxes (40 bags per pallet).

Regulatory food-contact status

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

235 °C260 °C285 °C

2000100050020010050

Apparent Shear Rate (1/s)

Ap

par

ent

Vis

cosi

ty (P

a.s)

Exxelor VA 1803 Rheology - Die 30/1

100

200

500

1000

2000