Description

1,4-Benzenedicarboxylic Acid, Dimethyl Ester Polymer With 1,3-Propanediol is a high-performance thermoplastic polyester, commonly known as poly(trimethylene terephthalate) or PTT, with CAS Registry Number 36619-23-5. This polymer is valued for its excellent resilience, inherent stain resistance, and superior elastic recovery, making it a versatile engineering material. It is primarily sought by manufacturers in the textile fibers, packaging, and specialty plastics industries seeking durable and flexible polymer solutions.

Application

• Textile Fibers: Production of high-performance carpets, apparel, and sportswear due to its excellent resilience, dyeability, and stretch recovery.
• Engineering Plastics: Used in injection molding and extrusion for automotive parts, electrical connectors, and consumer goods requiring good mechanical properties and chemical resistance.
• Packaging Films: Manufacture of flexible and rigid packaging materials that benefit from its barrier properties and clarity.
• Monofilaments and Bristles: Ideal for toothbrushes, paintbrushes, and industrial brushes owing to its stiffness, durability, and fatigue resistance.
• Non-Woven Fabrics: Used in geotextiles, filtration media, and hygiene products for its strength and stability.
• Polymer Blends and Composites: Serves as a matrix or blend component to enhance the properties of other polymers for specialized applications.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Dimethyl Ester Polymer With 1,3-Propanediol
CAS No.	36619-23-5
Molecular Formula	(C12H12O4·C3H8O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(trimethylene terephthalate); PTT; Poly(oxy-1,3-propanediyloxycarbonyl-1,4-phenylenecarbonyl); 1,3-Propanediol, polymer with dimethyl terephthalate; 3GT; Corterra Polymer; Sorona Polymer; Terephthalic acid, dimethyl ester, polymer with 1,3-propanediol
EINECS	Contact for details

Quality Control

Our poly(trimethylene terephthalate) (PTT) is manufactured under strict process controls to ensure batch-to-batch consistency and high performance. Quality is verified through comprehensive testing of intrinsic viscosity (IV), melting point, color, and residual monomer content. Certificates of Analysis (COA) detailing all relevant specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and excessive heat to maintain polymer integrity.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Intrinsic Viscosity (IV)	Contact for details
Melting Point	~225 - 230 °C
Density	~1.35 g/cm³
Moisture Content	< 0.1 %
Color (L* value)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.