Circ collaborates with Shenghong to advance commercial application of T2T recycled polyester filament from textile waste

【Answer 1】【Polymer Circular Recycling】 reports that on August 25, Circ, a U.S.-based leading T2T (Textile-to-Textile) recycling company, announced a cooperation agreement with Jiangsu Shenghong Chemical Fiber New Materials Co., Ltd., jointly advancing the commercial application of Circ’s recycled polyester in the polyester filament sector. Under the agreement, Shenghong will procure Circ’s recycled PET pellets for large-scale commercial production of filament products containing circularly recycled content. This collaboration further diversifies Shenghong’s sourcing channels for circular recycled raw materials and opens a new market entry pathway for Circ’s recycled polyester materials—via one of China’s leading fiber manufacturers. Circ employs a hydrothermal treatment technology based on water, heat, and pressure. Its core process can be summarized as follows: post-consumer polyester-cotton textiles → sorting & shredding → hydrothermal dissociation → cellulose pulp + recycled PTA/MEG → lyocell, viscose, and recycled PET → re-spinning. Circ’s publicly disclosed patents describe this technology as subcritical water reaction; in certain embodiments, processing temperatures range from 105–190°C and pressures from 40–300 psi. After pretreatment, polyester-cotton textiles enter the hydrothermal reaction system, where the polyester component undergoes depolymerization into terephthalic acid (PTA) and ethylene glycol (MEG); meanwhile, cotton fibers remain intact as processable cellulose components. The recovered PTA and MEG can be repolymerized into PET chips, while the cellulose pulp can be used to produce regenerated fibers such as lyocell and viscose. Jiangsu Shenghong Chemical Fiber New Materials Co., Ltd. is the operating entity of Shenghong Holding Group’s chemical fiber division, offering a full range of polyester filament products including POY, FDY, and DTY.

Latest ranking of nylon brands: Top Ten Polyamide (Nylon) Brands (Maigoo)

【Answer 2】 The Top Ten Nylon Brands include INVISTA, BASF, Pingmei Shenma, Hengshen (HSCC), Yongrong Holdings, Ascend Performance Materials, Huading Nylon, Taihua New Materials, Huafon, and Meida. The list is presented in no particular order and is provided for reference only. The Top Ten Nylon Brands list was compiled through voluntary applications submitted free-of-charge by enterprises, supplemented by data collection and collation conducted by CN10 Ranking Research Department and CNPP Brand Big Data Research Department. It was derived via big-data analytics, cloud computing, artificial intelligence, public voting and likes, as well as professional evaluation and analysis—accounting for market dynamics and parameter changes—ensuring authenticity, objectivity, and fairness. 1. INVISTA Affiliated Company: INVISTA Nylon Chemicals (China) Co., Ltd. Brand Introduction: INVISTA was originally DuPont’s fibers and interiors division, acquired by Koch Industries in 2004. It is a global leader in integrated fibers and polymers, a leader in nylon intermediates and polymer resins, and one of the world’s largest producers of polyamide 66 polymers. INVISTA operates plants and subsidiaries worldwide, including facilities in Shanghai producing adiponitrile, hexamethylenediamine, and nylon 66 polymer. 2. BASF Affiliated Company: BASF (China) Co., Ltd. Brand Introduction: A German chemical giant and one of the world’s largest integrated chemical companies, BASF operates over 20 major wholly-owned subsidiaries across Greater China. Its product portfolio spans chemicals, materials, industrial solutions, surface technologies, nutrition & care, and agricultural solutions. Renowned for its technical excellence and craftsmanship, BASF is a globally recognized enterprise in eco-friendly latex and auxiliaries. 3. Pingmei Shenma Affiliated Company: China Pingmei Shenma Holdings Group Co., Ltd. Brand Introduction: Formed through the merger of the former Pingmei Group and Shenma Group, Pingmei Shenma Group has established three distinctive industrial chains—coal-based nylon chemistry, carbon materials, and silicon materials plus hydrogen energy—covering three core sectors: coal & coking, nylon chemistry, and new energy & new materials. It has independently developed over 300 products—including high-strength ultra-low-shrinkage medium-to-low denier nylon 66 industrial yarn and aramid-reinforced nylon composite dipped cord fabric—and ranks among industry leaders in nylon 66 industrial yarn, engineering plastics, nylon 66 salt, and nylon 66 chips. 4. Hengshen (HSCC) Affiliated Company: Hengshen Holding Group Co., Ltd. Brand Introduction: Founded in 1984, Hengshen Group is an advanced manufacturing conglomerate integrating chemical, chemical fiber, and new materials businesses. It owns over ten entities, including Shenyuan New Materials, Hengshen High-Tech Fibers, Fortis Chemical Netherlands, Nanjing Fortis Chemical, and Hesheng Gases. It pioneered the world’s first fully vertically integrated nylon 6 value chain—from cyclohexanone → caprolactam → polyamide → nylon 6 spinning → nylon 6 texturing → warping → weaving → dyeing & finishing—spanning eight key stages. Its operations extend across more than 30 countries and regions. 5. Yongrong Holdings Affiliated Company: Fujian Yongrong Jinjiang Co., Ltd. Brand Introduction: Established in 2006, Yongrong Holdings is a large-scale high-tech enterprise integrating chemical, chemical fiber, and new materials industries, dedicated to delivering high-quality nylon products and services. It has achieved vertical integration across the entire upstream-to-downstream chain—from benzene → caprolactam → nylon chips → nylon fiber. Its core businesses cover caprolactam, nylon polymer chips, and nylon fibers. Its sales network serves major domestic and international markets, with products exported to over a dozen countries and regions across Southeast Asia, Europe, and the Americas.

US-based Circ and China's Huafon to Develop Textile-to-Textile Recycling Plant

Q: Circ collaborates with Shenghong to advance commercial application of T2T recycled polyester filament from textile waste

【Answer 1】 【Polymer Circular Recycling】 reports that on August 25, Circ, a U.S.-based leading T2T (Textile-to-Textile) recycling company, announced a cooperation agreement with Jiangsu Shenghong Chemical Fiber New Materials Co., Ltd., jointly advancing the commercial application of Circ’s recycled polyester in the polyester filament sector. Under the agreement, Shenghong will procure Circ’s recycled PET pellets for large-scale commercial production of filament products containing circularly recycled content. This collaboration further diversifies Shenghong’s sourcing channels for circular recycled raw materials and opens a new market entry pathway for Circ’s recycled polyester materials—via one of China’s leading fiber manufacturers. Circ employs a hydrothermal treatment technology based on water, heat, and pressure. Its core process can be summarized as follows: post-consumer polyester-cotton textiles → sorting & shredding → hydrothermal dissociation → cellulose pulp + recycled PTA/MEG → lyocell, viscose, and recycled PET → re-spinning. Circ’s publicly disclosed patents describe this technology as subcritical water reaction; in certain embodiments, processing temperatures range from 105–190°C and pressures from 40–300 psi. After pretreatment, polyester-cotton textiles enter the hydrothermal reaction system, where the polyester component undergoes depolymerization into terephthalic acid (PTA) and ethylene glycol (MEG); meanwhile, cotton fibers remain intact as processable cellulose components. The recovered PTA and MEG can be repolymerized into PET chips, while the cellulose pulp can be used to produce regenerated fibers such as lyocell and viscose. Jiangsu Shenghong Chemical Fiber New Materials Co., Ltd. is the operating entity of Shenghong Holding Group’s chemical fiber division, offering a full range of polyester filament products including POY, FDY, and DTY.

1 day ago

US-based Circ and Chinese chemical producer Huafon announced a joint venture to build a textile-to-textile recycling facility in China. The plant will process polycotton waste to recover chemical feedstocks like PTA and MEG for new textile production.

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2026-10-09

US-based Circ and China's Huafon to Develop Textile-to-Textile Recycling Plant

US-based Circ and China's Huafon to Develop Textile-to-Textile Recycling Plant

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