DuPont Tate and Lyle Bio Products

DuPont Tate & Lyle Zemea Propanediol Zemea USP Susterra Propanediol

Polyurethanes

Polyester polyol can be used in Susterra® 1,3 propanediol as a chain extenderSusterra® 1,3 Propanediol, Bio-based Performance Ingredient Monomer for Polyester Polyols

Susterra® reacts with MDI to yield linear urethane domains with low melt energies at room temperature in thermoplastic urethane elastomers. An example of the use of polyester polyol adipates manufactured with Susterra® is their formulation into cast urethane elastomers to replace 1,4-butanediol (BDO) adipates. Materials with comparable shore a hardness showed improved pot life, and abrasion resistance upon replacing BDO with Susterra®, satisfying desired mechanical properties.

Susterra® adipates can also successfully replace the mixed BDO/EG adipates in solvent borne polyurethane systems. Adipates made with Susterra® crystallize slowly at room temperature. Mixed Susterra®/EG polyester adipates are liquids at room temperature. Improved handling, clear or transparent polyurethanes, and polyurethanes with improved low temperature properties are expected to result from mixed glycol Susterra® based adipates.

In polyurethane applications like coatings, adhesives, sealants, and microcellular elastomers, thermoplastic polyurethanes, and aqueous polyurethane dispersions, Susterra® 1,3 propanediol can be used in a polyester polyol and as a chain extender.