1、生產酸改性共聚酯
　　1、Production of acid-modified copolyester
　　由摩爾分數為1%~10%的間苯二甲酸-5-磺酸鈉和對苯二甲酸及乙二醇共聚形成的共聚酯聚合物，具有很好的耐撕拉強度、抗沖
擊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，縮短加工循環時間。此外，這些酸改性的共聚酯還可制造多種用途廣泛的纖維和薄膜產品，如高回彈性芳香族熱粘聚酯纖維、異熱收縮混纖維、柔軟膨松仿絹絲、仿真絲、仿天然纖維，絕緣中空耐酸堿聚酯纖維，導電、抗靜電纖維，抗起皺、耐水解穩定性聚酯纖維等。
　　 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、生產低熔點聚酯
　　2, low melting point polyester production
　　一般情況下生產的聚酯熔點約為250℃，用100%間苯二甲酸-5-磺酸鈉生產的聚酯熔點約為65℃，如果聚酯生產中用50%的間苯二甲酸-5-磺酸鈉替代對苯二甲酸，生成的共聚酯熔點約為120℃。為此可根據聚合物性能的要求，在較寬范圍內改變間苯二甲酸-5-磺酸鈉的含量，以生成不同熔融溫度的聚酯。此類聚酯生產的長絲可以制造輕飄、柔軟及華貴感覺的柔性織物。生產的纖維除用于制造熱粘結無紡織物外，還可用作填充物，增加無紡織物的蓬松度，降低填充物的重量，增加保溫性能。制造超細纖維，由于其結晶區的縮小，染色性能優于純PET超細纖維。
　　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、生產聚芳酰胺
　　3, the production polyaramide
　　由間苯二甲酸-5-磺酸鈉為原料生產的間芳酰胺聚合物纖維具有不易燃燒、不閃火花、不熔化或不粘結在皮膚上等特點，適用于制造各種類型的耐熱工作服。聚間芳酰胺纖維材料還可用于飛機的內裝飾材料，提高阻燃性，增加飛機的安全性。此外還可用作熱煙筒氣體的過濾袋，石棉替代品，造紙用的干燥帶和橡膠的增強物，電極、發動機、變壓器及電纜的高溫絕緣紙和絕緣管網，家庭用燙衣板和廚房用手套等。
　　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、生產不飽和樹脂
　　4, the production of unsaturated polyester resin
　　由間苯二甲酸-5-磺酸鈉、丁烯二酸酐和乙二醇混合縮聚制得的間苯二甲酸-5-磺酸鈉型不飽和樹脂較鄰苯二甲酸型不飽和樹脂具有更好的水解穩定性、更高的硬度、較高的熱分解溫度和更好的耐化學品性，適用于室溫低壓成型和熱壓成型，可用作耐化學腐蝕設備及鋼設備的防腐層或襯里，如玻纖增強塑料和表面膠凝層，尤其適用于纏繞成型制品以及100℃以下長期使用的耐熱制品和膠衣層，廣泛用于建筑、管道、貯罐、交通運輸、航海、電子電器和日用消費品等領域。間苯二甲酸-5-磺酸鈉與高性能的紙質材料混合可制成物理性能良好、成本低的阻燃型樹脂和構造型樹脂，用于制造電梯、扶手和魚桿等。耐腐蝕的間苯二甲酸-5-磺酸鈉型不飽和聚酯樹脂應用于地下貯罐、汽油管線、公共設施基礎的修理及更換，如道路、高速路、橋梁及其輔助設施（防雨、防光、抗震）、船塢、防波堤、供水系統、廢物處理系統等。由間苯二甲酸-5-磺酸鈉制成的壓縮模塑型樹脂，可用于制造汽車部件、工業品零件、微波爐、電器部件、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.