Poly bd®

Liquid Hydroxyl Terminated Polybutadiene

Poly bd® resins are low molecular weight, hydroxyl-terminated homopolymers of butadiene. These resins are characterized by low volatiles content, low glass transition temperatures, excellent hydrophobicity, and a high level of reactive functionality.

The facile reaction of Poly bd® polyols with curing agents such as di- and polyisocyanates provides an attractive route to the preparation of general-purpose polyurethanes. The unique structure of the Poly bd® polyols provide properties which surpass typical polyether and polyester polyol-based urethane systems, as well as conventional, general-purpose rubbers. Poly bd® resins are used in various industries including construction, automotive, electronics, and rubber. They are incorporated in castable elastomers, caulks, sealants, waterproof membranes, foams, adhesives, coatings, binders for composites, potting and encapsulation compounds as well as other rubber-fabricated materials.

Poly bd® resins contain unsaturated double bonds that can be cured or crosslinked and a few grades of Poly bd® resins contain epoxy functionality in the backbone.

Low moisture vapor transmission rates (MVTR)
Adhesion to a variety of substrates
Hydrolytic stability
Resistance to strong aqueous acid and bases
Low temperature flexibility

Low embedment stress
Thermal cycling stability
Electrical insulation properties
High elongation with good elastic recovery

Poly bd® hydroxyl-terminated polybutadienes comply with title 21 (Food and Drugs) of the Code of Federal Regulations, paragraph 175.300, Resinous and Polymeric Coatings.

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