New Sealants/Adhesives from Bio-Based Building Blocks

ADFAST Corp.(St-Laurent，QC)是加拿大胶粘剂、嵌缝、紧固件和密封剂的领先供应商之一，事实上，加拿大建筑窗户用密封剂中约70%来自ADFAST的产品。这些材料在建筑、包装、运输、船用密封剂等方面都有应用；事实上，在任何需要密封、紧固和粘合的行业中都有应用。因此，市场竞争激烈，需要不断开发创新产品，以满足消费者日益增长的复杂需求。ADFAST一直在开发自己的产品，以增加他们的竞争优势，并希望通过能够精确地定制他们的配方来更好地响应客户的需求。拟议的合作将建立在NSERC Engage赠款的基础上，并将涉及以下三个主要主题的聚氨酯混合密封剂的开发。多元醇和异辛酸酯的生物基构建块将用于制造新的聚氨酯杂化材料。此外，这项建议将使用非异氰酸酯路线合成生物基聚氨酯；从而消除合成这些化合物的危险过程，并消除工人接触异氰酸酯的危险，因为异氰酸酯已被发现对健康有害。最后，广泛用于涂料和地板覆盖物的聚氨酯水分散体(PUD)将在不使用有机溶剂的情况下开发，从而减少工人接触挥发性有机化合物(VOC)。所有这些方面的目标都是在不牺牲性能的情况下生产更绿色、更安全的替代产品。

ADFAST Corp. (St-Laurent, QC) is one of the leading supplier of adhesives, caulking, fasteners and sealants in Canada - indeed about 70% of all sealants in building windows in Canada are derived from ADFAST's products. These materials find application in construction, packaging, transportation, marine sealants, to name but a few; indeed, in any industry requiring sealing, fastening and adhesion. Consequently, the market is highly competitive and innovative products constantly need to be developed to match the ever-increasing, sophisticated needs of consumers. ADFAST has been developing their own products to increase their competitive advantage and desire to be more responsive to their customer's needs by being able to precisely tailor their formulations. The proposed collaboration will build on the NSERC Engage grant and will entail development of polyurethane hybrid sealants focused on the following three major themes. Bio-based building blocks for polyols and diisocanates will be used to make new polyurethane hybrids. Further, this proposal will synthesize bio-based polyurethanes but using the non-isocyanate route; thereby eliminating the dangerous process to synthesize these compounds and eliminate the exposure of workers to isocyanates, which have been found to be health hazard. Finally, polyurethane aqueous dispersions (PUDs), widely used in coatings and floor coverings, will be developed without the use of organic solvents, reducing volatile organic compound (VOC) exposure to workers. All of these aspects aim to produce greener, safer alternative products without sacrificing performance.