FAN UNIT CONTAINING RECYCLED AND RENEWABLE POLYMERIC COMPOSITIONS
申请人:Dell Products L.P.
公开号:US20220127451A1
公开(公告)日:2022-04-28
A polymeric composition and fan unit containing the polymeric composition are described. The polymeric composition can contain 5 wt. % to 30 wt. % of a mechanically recycled polyethylene terephthalate (PET) polymer, 5 wt. % to 80 wt. % of a polybutylene terephthalate (PBT) polymer, wherein the PBT polymer is a reaction product of polymerizing 1,4 butane diol (BDO) with chemically recycled terephthalic acid or is derived from fossil fuel based feed stock, 5 wt. % to 35 wt. % of a filler, and 2 wt. % to 20 wt. % of a non-halogenated flame retardant.
Copper-catalyzed highly efficient ester formation from carboxylic acids/esters and formates
作者:Jun Liu、Changdong Shao、Yanghui Zhang、Guangfa Shi、Shulei Pan
DOI:10.1039/c4ob00193a
日期:——
A highly efficient copper-catalyzed protocol for the synthesis of esters has been developed from formates. This protocol is applicable to reactions with either esters or acids as the substrates, and shows broad substrate scopes and high yields.