| Résumé : |
Acrylic polymers have gone through a technological evolution over the past 10 years. Historically, first generation acrylics have found a natural application as basecoat binders because of their excellent adhesion, molding and natural appearance. But, these acrylics, despite their strengths, tended to be tacky in soft finishes and usually required drying additives. Second generation acrylics were designed to eliminate room temperature tack, thus assisting in piling and preventing dirt pick-up, but often required plating coats to improve plate release.
Thirdgeneration acrylics now use a new technology that allows them to be low in tack at both room temperature and at plating temperatures, without compromising molding or adhesion.
Today, we see available to the finisher a wide array of low VOC acrylic technologies, gaining access to markets on performance not just low cost. Such acrylics rae being used in a number of new applications: plating coats, automotive finishes, high-flex basecoats for splits and highly water resistant finishes. |
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New acrylic technologies in leather finishing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), LXXXVII, N° 3 (03/1992)
