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Technical Data Sheet
Eastek™ 4500 polymer

  • Adhesives
  • Polyurethanes
Key Attributes
  • Enhanced compatibility with tackifiers
  • Excellent green strength
  • Good heat and hydrolytic stability
  • High Tg
  • Low viscosity
  • Outstanding UV resistance
  • Superior adhesion to low surface energy substrates

Product Description
Eastman Eastek™ 4500 polymer is a high-performance polyester resin for polyurethane hot melt adhesive applications. Eastman Eastek 4500 polymer is designed to reduce viscosity, increase Tg, enhance UV resistance, and improve formulation compatibility to enable greater productivity, application consistency, and long-term durability of the bonded structure.

Typical Properties

PropertyTypical Value, Units
General Properties
Hydroxyl Numbera38-43 mg KOH/g
Acid NumberbMax. 1.5 mg KOH/g
Viscosity, Brookfield 
     @ 130°C90-120 poise
Glass transition temperature (DSC)44-46 °C
Moisture Contentd<0.1 %
Open Timee<5 seconds

aASTM E222
bASTM D664
cASTM D1209
dASTM D1533
eEastman Internal Method

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

1/17/2024 3:33:23 PM