【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】 With PET wastes, through catalytic alcoholysis, esterfication and polycondensation, a new unsaturatedpolyester resin (UP) is prepared whose cost per ton is 500 yuan less than that the conventional UP resin,i which has a molecular weight of 1900~2300, acid value 19~29,and a storage life of 8 months.? 15 ?更多还原