BOMAR › BR 3741 AB BR 3741 AB $0.00 BR 3741 AB is excellent in UV light-curable PSA's as a reactive tackifier. It is also used as a co-oligomer for adhesion promotion in coatings. Quantity: Add To Cart Added! BR 3741 AB is excellent in UV light-curable PSA's as a reactive tackifier. It is also used as a co-oligomer for adhesion promotion in coatings.