Our Low COOH PET chips are engineered to deliver superior hydrolysis resistance, coating adhesion, and long-lasting mechanical performance
Normal polyester contains high carboxyl (COOH) end groups, which are prone to
Low COOH PET solves these issues by stabilizing polymer chains and minimizing chain breaks. Factories using Low COOH PET have reported:
Modification Method: Optimized polymerization conditions with tailored catalysts and end-capping agents to minimize terminal carboxyl group content.
Mechanism: Fewer reactive end groups reduce hydrolysis and thermal chain scission, significantly improving polymer stability and durability.
Modification Method: Precise control polymerization, including temperature, reaction time, and catalyst concentration, to optimize molecular weight distribution and chain structure.
Mechanism: A more uniform molecular structure enhances intermolecular stability, reducing thermal shrinkage and variability, getting consistent processing & end-use properties.
Modification Method: Use of low-hydrolysis monomers (e.g., low-carboxyl diols and diacids) in the polymerization process.
Mechanism: Reduced susceptibility to hydrolysis under high temperature and humidity conditions minimizes chain degradation, ensuring long-term structural stability and improved durability and chemical resistance.
Modification Method: Application of specific end-capping agents such as esterification or etherification reagents to neutralize reactive terminal carboxyl groups.
Mechanism: By blocking highly reactive end groups, unwanted side reactions and crosslinking during processing are minimized, leading to improved processing stability, thermal performance, and overall material consistency.
Modification Method: Incorporation of thermal stabilizers, antioxidants, and light stabilizers into the polyester formulation.
Mechanism: Antioxidants inhibit thermal-oxidative degradation during processing, while UV stabilizers protect against ultraviolet-induced chain scission, improving long-term durability in automotive and outdoor applications.
In automotive interiors, polyester fabrics often face:
20–30% strength loss under heat & humidity
Coating peeling >10% after bending
Hardening, cracking, and reduced lifetime
👉 This leads to higher scrap rates and unstable product quality.
Achieve stable coating, reduce defects by up to 15%, and deliver softer, more durable materials for high-end automotive applications.
In automotive convertible roofs and outdoor vehicle fabrics, prolonged exposure to UV rays, heat, and moisture can lead to:
20–30% strength loss after long-term exposure
Coating peeling and cracking
UV degradation causing yellowing and reduced aesthetic appeal
👉 These issues result in a shorter product lifespan and increased maintenance costs.
Like umbrellas and awnings, often experience:
UV degradation causing fading and weakening
Moisture absorption, leading to shrinkage and mold
Reduced fabric strength after prolonged outdoor exposure
👉 These challenges increase the maintenance cost and shorten the product lifespan.
Maintain color vibrancy, fabric softness, and durability, reduce weathering effects, and extend furniture lifespan by 30–50%.
High-end outdoor furniture fabrics, such as sofas and cushions, often face:
Weathering effects causing color fading and fiber breakdown
Moisture absorption, leading to mold and mildew
Fabric hardening and reduced comfort over time
👉 These issues lead to poor customer satisfaction and increased replacement rates.
Industrial coated fabrics, such as tarpaulins and protective covers, experience:
Coating peeling and chipping under stress
Abrasion damage from heavy-duty use
Reduced tensile strength after exposure to weathering
👉 This results in higher repair costs and reduced product life.
Enhance strength, coating adhesion, and durability for functional textiles, improving performance and extending product lifetime by 40%.
Functional technical textiles used in applications like protective clothing and engineering fabrics often face:
Strength loss after prolonged exposure to heat and chemicals
Coating failure or adhesion issues
Reduced durability under physical stress and environmental conditions
👉 These performance issues result in high failure rates and increased costs.
Get in touch with us to explore how Low COOH PET can improve durability, stability, and overall product quality for your applications.
info@globalpolyester.com what's APP 1-7134804748
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