不饱和聚酯树脂。主要是不饱和的二元酸和二元醇所生成的不饱和线性聚酯树脂与具有聚合能力的单体所形成的粘稠溶液。在引发剂或热的作用下能发生关联反应而形成体型聚酯树脂。常用的不饱和和二元酸是顺丁烯二酸酐，、二元醇是乙二醇、单体是乙烯基化合物如苯乙烯等。主要用于制玻璃钢和涂料、也用于制胶泥和压塑粉等。
Shandong Hongxin Chemical Industry Co., Ltd. is a joint-stock company established by Zibo Zhoucun Organic Chemical Plant, Shandong Junfeng Industrial Co., Ltd., Zibo Huaan Chemical Co., Ltd., Beijing Chemical Industry Research Institute and Qingdao Science and Technology University. The existing total assets of 2.8 billion yuan, registered capital of 218 million yuan.
The company mainly produces basic organic chemical raw materials. The main products are phthalic anhydride, plasticizers, unsaturated polyester resins, maleic anhydride, plastic gloves and other five product series nearly 30 varieties including phthalic anhydride device capacity of 260,000 tons per year (ranking first in Asia). Plasticizer capacity is 250,000 tons per year, ranking second in the country, unsaturated polyester resin 100,000 tons per year, maleic anhydride 60,000 tons per year, and 2.4 billion per year of PVC plastic gloves, maleic anhydride tail gas heat storage and incineration plant, daily treatment of 1000 tons of waste water treatment equipment and 4500KW per year waste heat power generation equipment. The company always adheres to scientific development, adopts transfer mode and structure adjustment as its development goals, continuously adjusts and perfects its product structure, and seeks new development projects. The scale of the company continues to grow.
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