Adiprene® BLM 500 Datasheet

Polyurethane (Polyether, MDI)

Supplied by Chemtura Corporation

Create your free Prospector account to view this complete product datasheet. A free account includes access to hundreds of thousands of detailed technical datasheets. Create Your Free Account
Product Description
ADIPRENE BLM 500 is an MDI based urethane prepolymer with blocked isocyanate curing sites, which can be activated by heating. The blocked curing sites allow protracted storage of the polymer in the presence of moisture and active vulcanizing agents. Diamine-cured ADIPRENE BLM 500 yields vulcanizates having improved performance over common TDI based urethane materials.

ADIPRENE BLM 500 is a novel blocked system based on low free isocyanate technology. With Chemtura's unique process, the residual MDI in the unblocked preoplymer is below 0.5%. The resulting blocked prepolymer has very good processing characteristics, such as low viscosity and melting point. Moreover, the widely used curative for conventional MDI prepolymer is 1,4 butanediol (BDO). Amine cured MDI polyurethanes are preferred for many demanding applications, expecially those requiring toughness and modulus retention at high temperature. Thus, blocked MDI prepolymers open to the opportunity to use amine curatives, for end-use properties not achieved by conventional MDI urethanes.

Materials made from ADIPRENE BLM 500 have high tensile strength and high elongation, and especially have excellent tear strength. They are also low in viscous damping indicating low heat generation and more durability in dynamic applications. ADIPRENE BLM 500 is well suited as a vehicle for abrasion resistant coatings for fabric and rubber, and for solvent-resistant adhesives.
General  
Material Status 
  • Commercial: Active
Availability 
  • Asia Pacific
  • Latin America
  • North America
Features 
  • Durable
  • Good Tear Strength
  • Good Toughness
  • Heat Cure
  • High Elongation
  • High Tensile Strength
  • Low Viscosity
Uses 
  • Adhesives
  • Coating Applications
  • Fabric Coatings
Appearance 
  • Amber
Forms 
  • Liquid
Physical
Nominal Value
Unit
Test Method
Density / Specific Gravity
    ASTM D792
-- 2
 
 
-- 3
 
 
Elastomers
Nominal Value
Unit
Test Method
Tensile Stress
    ASTM D412
100% Strain 4
psi
 
100% Strain 5
psi
 
300% Strain 4
psi
 
300% Strain 5
psi
 
Tensile Strength
    ASTM D412
-- 4
psi
 
-- 5
psi
 
Tensile Elongation
    ASTM D412
Break 4
%
 
Break 5
%
 
Tear Strength
    ASTM D470
Split 4
lbf/in
 
Split 5
lbf/in
 
Hardness
Nominal Value
Unit
Test Method
Durometer Hardness
    ASTM D2240
Shore A 4
 
 
Shore A 5
 
 
Fill Analysis
Nominal Value
Unit
Test Method
Brookfield Viscosity (122°F)
Pa·s
 
Additional Information
Nominal Value
Unit
Test Method
Isocyanate Content
     
Blocked
%
 
Free
%
 
Features
Features may also be described by the following terms: Low Viscosity, High Tensile Strength, High Elongation, Good Tear Strength, Good Toughness, Tough, Heat Cure.
Uses
Uses may also be described by the following terms: Fabric Coatings, Fabric Coating.
Available Documents
Technical Datasheet (English)
Notes
1Typical properties: these are not to be construed as specifications.
240°C
325°C
4MDEA
5MDA
 
UL and the UL logo are trademarks of UL LLC © 2020. All Rights Reserved.
The information presented here was acquired by UL from the producer of the product or material or original information provider. However, UL assumes no responsibility or liability for the accuracy of the information contained on this website and strongly encourages that upon final product or material selection information is validated with the manufacturer. This website provides links to other websites owned by third parties. The content of such third party sites is not within our control, and we cannot and will not take responsibility for the information or content.