Abstract
AbstractPoly(vinyl butyral) (PVB) is the tough polymer film widely used as the interlayer in safety glass laminates such as automotive windshields. This material is now available in pellet form for easy blending into other polymer resins. It has been shown to act as an impact modifier and/or processing aid when blended at low levels into a variety of engineering resins, polyolefins, and PVC. At relatively high loadings, it performs as a permanent plasticizer imparting toughness, flexibility, enhanced processability, and oil resistance. The residual hydroxyl groups in PVB provide active surface sites to enhance paintability and adhesion to other materials. The adhesion of PVB has been found to enhance stiffness/compatibility when glass fibers and minerals are incorporated into engineering resins. The hydroxyl functionality has been used as crosslinking sites to form tough oil‐resistant thermoplastic elastomers (TPEs) via dynamic vulcanization. J. VINYL. ADDIT. TECHNOL., 12:33–36, 2006. © 2006 Society of Plastics Engineers
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