ISOTACTIC POLYETHERS AND BIMETALLIC CATALYSTS, METHODS OF MAKING SAME, AND USES THEREOF
申请人:CORNELL UNIVERSITY
公开号:US20170335061A1
公开(公告)日:2017-11-23
Provided are compositions comprising isotactic polyethers. Methods of making isotactic polyethers, and uses thereof are also disclosed. Also provided are bimetallic complexes that can be used as catalyst. Methods of making isotactic polyethers and bimetallic complexes and uses thereof are also disclosed. For example, a racemic bimetallic (salalen)CrCl polymerization catalyst was prepared and used alkyl diol, PO-oligomer triols, and aPPO and PCL diols as CSAs in order to produce α,ω-hydroxy telechelic iPPO. These telechelic polymers have controlled molecular weights and are semicrystalline. Amorphous α,ω-hydroxy telechelic PPO can also be produced by increasing the reaction temperature in conjunction with the use of CSAs.
提供了包含同构聚醚的组合物。还公开了制备同构聚醚的方法以及它们的用途。还提供了可用作催化剂的双金属配合物。还公开了制备同构聚醚和双金属配合物以及它们的用途的方法。例如,制备了一个消旋双金属(salalen)CrCl聚合催化剂,并使用烷基二醇、PO寡聚三醇以及aPPO和PCL二醇作为CSA,以生产α,ω-羟基末端的iPPO。这些末端羟基聚合物具有可控的分子量,并且是半结晶的。通过增加反应温度并结合使用CSA,还可以生产无定形的α,ω-羟基末端PPO。