1、生产酸改性共聚酯
　　1、Production of acid-modified copolyester
　　由摩尔分数为1%~10%的间苯二甲酸-5-磺酸钠和对苯二甲酸及乙二醇共聚形成的共聚酯聚合物，具有很好的耐撕拉强度、抗冲
击性和熔融粘度及可染性。用此共聚酯制造的瓶子能增加透明度、降低醛含量，提高阻隔性，缩短加工循环时间。此外，这些酸改性的共聚酯还可制造多种用途广泛的纤维和薄膜产品，如高回弹性芳香族热粘聚酯纤维、异热收缩混纤维、柔软膨松仿绢丝、仿真丝、仿天然纤维，绝缘中空耐酸碱聚酯纤维，导电、抗静电纤维，抗起皱、耐水解稳定性聚酯纤维等。
　　 with good resistance to tearing strength, impact resistance and melt viscosity, and can be dyed sex. With this copolyester manufacturing bottles to increase transparency, reduce formaldehyde levels, improved barrier properties, shorten the processing cycle time. In addition, these acid-modified copolyester can also manufacture a wide variety of uses fiber and film products, such as high resilience hot sticky aromatic polyester fiber, different heat shrinkable mixed fiber, soft and bulky imitation silk, silk imitation of natural fibers, hollow acid polyester fiber insulation, conductive, antistatic fiber, anti-wrinkle, hydrolytic stability of polyester fiber.
　　2、生产低熔点聚酯
　　2, low melting point polyester production
　　一般情况下生产的聚酯熔点约为250℃，用100%间苯二甲酸-5-磺酸钠生产的聚酯熔点约为65℃，如果聚酯生产中用50%的间苯二甲酸-5-磺酸钠替代对苯二甲酸，生成的共聚酯熔点约为120℃。为此可根据聚合物性能的要求，在较宽范围内改变间苯二甲酸-5-磺酸钠的含量，以生成不同熔融温度的聚酯。此类聚酯生产的长丝可以制造轻飘、柔软及华贵感觉的柔性织物。生产的纤维除用于制造热粘结无纺织物外，还可用作填充物，增加无纺织物的蓬松度，降低填充物的重量，增加保温性能。制造超细纤维，由于其结晶区的缩小，染色性能优于纯PET超细纤维。
　　Generally the production of polyester melting point of about 250 ℃, produced with 100% isophthalic polyester melting point of about 65 ℃, if the polyester produced using 50% of isophthalic acid and terephthalic acid substitution to generate copolyester melting point of about 120 ℃. To this end according to the performance requirements of the polymer, changing the content of isophthalic acid in a wide range of different melt temperatures to produce polyester. Such can be made of polyester filament production ethereal, soft and luxurious feeling of flexible fabric. Except for the production of fibers thermally bonded nonwoven fabric manufacture, also be used as a filler to increase the bulkiness of the nonwoven fabric, to reduce the weight of the filler, to increase the insulation performance. Manufacture of microfiber, since the reduction of its crystalline regions, dyeing properties than pure PET microfiber.
　　3、生产聚芳酰胺
　　3, the production polyaramide
　　由间苯二甲酸-5-磺酸钠为原料生产的间芳酰胺聚合物纤维具有不易燃烧、不闪火花、不熔化或不粘结在皮肤上等特点，适用于制造各种类型的耐热工作服。聚间芳酰胺纤维材料还可用于飞机的内装饰材料，提高阻燃性，增加飞机的安全性。此外还可用作热烟筒气体的过滤袋，石棉替代品，造纸用的干燥带和橡胶的增强物，电极、发动机、变压器及电缆的高温绝缘纸和绝缘管网，家庭用烫衣板和厨房用手套等。
　　Isophthalic acid as raw materials by the inter-aramid polymer fibers with non-flammable, no flash sparks, do not melt or superior bonding characteristics of the skin, for the manufacture of various types of heat-resistant overalls. Poly-aramid fiber material can be used for aircraft interior trim materials to improve flame retardancy and increase aircraft safety. In addition, the filter bag can be used as thermal chimney gases, asbestos substitutes, with reinforcements dry with paper and rubber electrodes, engines, transformers and cables and insulated high temperature pipe insulation paper, household and kitchen ironing board with gloves.
　　4、生产不饱和树脂
　　4, the production of unsaturated polyester resin
　　由间苯二甲酸-5-磺酸钠、丁烯二酸酐和乙二醇混合缩聚制得的间苯二甲酸-5-磺酸钠型不饱和树脂较邻苯二甲酸型不饱和树脂具有更好的水解稳定性、更高的硬度、较高的热分解温度和更好的耐化学品性，适用于室温低压成型和热压成型，可用作耐化学腐蚀设备及钢设备的防腐层或衬里，如玻纤增强塑料和表面胶凝层，尤其适用于缠绕成型制品以及100℃以下长期使用的耐热制品和胶衣层，广泛用于建筑、管道、贮罐、交通运输、航海、电子电器和日用消费品等领域。间苯二甲酸-5-磺酸钠与高性能的纸质材料混合可制成物理性能良好、成本低的阻燃型树脂和构造型树脂，用于制造电梯、扶手和鱼杆等。耐腐蚀的间苯二甲酸-5-磺酸钠型不饱和聚酯树脂应用于地下贮罐、汽油管线、公共设施基础的修理及更换，如道路、高速路、桥梁及其辅助设施（防雨、防光、抗震）、船坞、防波堤、供水系统、废物处理系统等。由间苯二甲酸-5-磺酸钠制成的压缩模塑型树脂，可用于制造汽车部件、工业品零件、微波炉、电器部件、水槽、浴盆、淋浴室隔板以及小型船只等。
　　Isophthalic acid, maleic anhydride and ethylene glycol obtained by polycondensation of mixed unsaturated isophthalic than phthalate resin type unsaturated resin having improved hydrolytic stability, higher hardness than high thermal decomposition temperature and better chemical resistance, low temperature suitable for molding and thermoforming equipment and used as a chemical resistant steel lining or coating equipment, such as glass fiber reinforced plastic and a surface layer of gelled , especially for winding molding products and heat-resistant products and gel coat layer below 100 ℃ long-term use, widely used in construction, pipelines, storage tanks, transportation, marine, electronics and consumer goods and other areas. Isophthalic acid and high performance can be made of a paper material mixed good physical properties, low-cost flame retardant resin and the resin structure for the manufacture of elevators, handrails and fishing rods and the like. Corrosion resistant isophthalic unsaturated polyester resins used in underground storage tanks, gasoline pipelines, public facilities-based repair and replacement, such as roads, highways, bridges and ancillary facilities (rain, light, earthquake) , docks, jetties, water supply systems, waste treatment systems. Compression molding resins made ??by the Inter-acid, can be used in the manufacture of automotive parts, industrial parts, microwave ovens, electrical components, sink, tub, shower room and small vessels such as separators.