【摘要】 本文叙述了用PET废料经催化醇解和酯化缩聚制得每吨成本低于一般通用型UP树脂500元的新型不饱和聚酯树脂,其分子量为1900～2300,酸值19～29,贮存稳定性八个月。更多还原

【Abstract】 The preparation of a new unsaturated polyester(UP), the cost of which is 500 Yuan/t lower than that of common UP, from PET waste by catalytic alcoholysis and esterifying condensation is described in this paper. The molecular weight of the UP is 1900-2300, acid number is 19-29 and storage stability is 8 months.更多还原