HTChem Inc. — TPU Material Solutions & Technical Support
LARIPUR® TPU: High-Performance & Easy to Process
LARIPUR® is a thermoplastic polyurethane (TPU) range developed by COIM, Italy, and supplied in Taiwan by HTChem. It combines the processing versatility of thermoplastics with the performance characteristics of polyurethane elastomers, including:
- Excellent abrasion resistance
- Flexibility across a broad temperature range
- Good resistance to compression set
- Resistance to oils, greases, and various solvents
- Grade-specific options for hydrolysis, weathering, and microbial resistance
With a broad selection of polymer chemistries and specialized formulations, LARIPUR® offers material solutions for a wide range of industrial applications.
- Polyether-Based TPU
Excellent resistance to hydrolysis and microorganisms, combined with good low-temperature flexibility. Suitable grades are widely used in medical, cable, and other demanding applications. - Polyester-Based TPU
Excellent rebound, tear strength, and abrasion resistance. Specialized polyester grades are also available for applications requiring improved hydrolysis resistance and low-temperature performance. - Polycaprolactone-Based TPU
Combines excellent mechanical properties with enhanced resistance to hydrolytic aging and good flexibility at low temperatures.
LARIPUR® RS — Bio-Based TPU
Performance with Renewable-Source Content
LARIPUR® RS is COIM's bio-based TPU range developed to reduce the use of conventional fossil-derived raw materials through the use of renewable-source feedstocks. Depending on the grade, LARIPUR® RS contains approximately 35% to 75% bio-based content while maintaining processing characteristics familiar to conventional TPU users.
The materials can be processed using standard TPU injection molding and extrusion equipment, making them suitable for manufacturers looking to introduce renewable-source materials without major changes to existing production systems. LARIPUR® RS is designed to provide physical and mechanical performance comparable to conventional TPU while helping reduce reliance on fossil-based resources.
Actual bio-based content, processing conditions, and material performance vary by grade. Please refer to the latest technical data sheet (TDS) or contact HTChem for material selection.
LARIPUR® RS Bio-Based TPU
| Grade | Chemistry |
Bio-Based Content (%) |
Density (g/cm³) | Hardness (Shore A/D) |
Tensile Strength (N/mm²) |
Elongation at Break (%) |
Tear Strength (N/mm) |
Typical Applications |
|---|---|---|---|---|---|---|---|---|
| RS6580 |
Polyester (PAE-free) |
50 | 1.14 | 72A | 35.6 | 730 | 40 | Injection / extrusion; technical parts; footwear |
| RS7580 |
Polyester (PAE-free) |
60 | 1.14 | 77A | 50.0 | 725 | 60 | Higher-strength flexible parts |
| RS7780 | Polyester | 75 | 1.12 | 78A | 47.5 | 590 | 65 | Technical parts; extruded belts / sheets |
| RS8580 | Polyester | 71 | 1.14 | 83A | 59.5 | 590 | 79 | High-strength flexible parts; protective housings |
| RS5580 |
Polyester / Rubber Copolymer |
53 | 1.17 | 58D | 65.4 | 440 | 180 | High-rigidity structural parts |
| RS6280 |
Polyester / Rubber Copolymer |
35 | 1.01 | 71A | 17.8 | 519 | 31 | Lightweight cushioning parts |
| RS7280 | Polyester | 50 | 1.03 | 50A / 71A | 22.9 | 536 | 35 | General injection / extrusion |
*Values shown are representative data for preliminary material selection only. For medical-contact, flame-retardant, or other regulated applications, compliance and formulation requirements should be confirmed on a grade-specific basis.
TPU for Medical Applications
Reliable Materials with Grade-Specific Compliance Options
Selected LARIPUR® TPU grades are available for medical and healthcare applications requiring controlled material performance and documented biological or regulatory evaluation. Depending on the specific grade, available evaluation or compliance documentation may include USP Class VI or ISO 10993. Certain polyether-based grades are also available for applications requiring specific water-contact or regulatory requirements. Material selection should always be based on the intended application, processing conditions, and the regulatory requirements applicable to the finished device. Please contact HTChem to confirm the latest documentation and compliance status for the selected grade before final qualification.
LARIPUR® TPU for Medical Applications
| Grade | Hardness (Shore A/D) |
Specific Gravity (g/cm³) |
Tensile Strength (N/mm²) |
Elongation at Break (%) |
Tear Strength (N/mm) |
Compliance / Test Reference |
|---|---|---|---|---|---|---|
| LPR 7560 | 77A | 1.10 | 40.7 | 690 | 55 | USP Class VI |
| LPR 9060 | 86A | 1.12 | 44.4 | 650 | 65 | ISO 10993 |
| LPR 9060U | 86A | 1.13 | 61.5 | 480 | 71 | ISO 10993 |
| LPR 2103-90AE | 90A | 1.14 | 52.0 | 550 | 85 | USP Class VI |
| LPR 5260 | 50D | 1.15 | 54.8 | 530 | 110 | USP Class VI |
*The grades listed above are commonly considered for applications such as IV catheters, feeding tubes, urinary catheters, and general medical tubing. Final material selection and regulatory qualification should be evaluated according to the intended application. Please contact HTChem to confirm the latest documentation and grade-specific compliance status.
TPU for Cable & Wire
Flexible, Durable Polyether-Based Solutions
LARIPUR® TPU offers excellent mechanical and physical properties for cable jackets, wire insulation, and related extrusion applications. Selected polyether-based grades provide a combination of low-temperature flexibility, hydrolysis resistance, microbial resistance, and weathering performance for demanding cable and wire applications.
LARIPUR® TPU for Cable & Wire
| Grade | Hardness (Shore A/D) |
Specific Gravity (g/cm³) |
Tensile Strength (N/mm²) |
Elongation at Break (%) |
Tear Strength (N/mm) |
Flammability (UL 94) | Appearance |
|---|---|---|---|---|---|---|---|
| LPR 9060EG | 86A | 1.12 | 44.4 | 650 | 65 | V-2 | Glossy / Transparent |
| LPR 9060EM | 88A | 1.10 | 50.2 | 620 | 72 | V-0 | Matte |
| LPR 9060EF | 87A | 1.14 | 48.1 | 635 | 68 | V-0 to V-2 | Glossy / Transparent |
| LPR 8860EG | 86A | 1.12 | 52.3 | 540 | 72 | V-2 | Glossy / Transparent |
| LPR 9060HFM | 89A | 1.22 | 34.3 | 615 | 61 | V-0 | Matte |
| LPR 5260EG | 50D | 1.15 | 54.8 | 530 | 110 | V-2 | Glossy / Transparent |
*Values shown are representative data provided by the manufacturer and are intended for preliminary material selection only. Please contact HTChem for assistance with specific performance, processing, or regulatory requirements.
TPU for Seals & Gaskets
Oil & Chemical Resistance with Low Compression Set
Selected LARIPUR® polyether- and polycaprolactone-based TPU grades are designed for sealing applications requiring excellent mechanical performance together with good resistance to oils and chemicals. These materials can maintain favorable physical and mechanical properties at elevated temperatures, making them suitable for demanding sealing and gasket applications where compression-set performance is an important consideration.
LARIPUR® TPU for Seals & Gaskets
| Grade | Hardness (Shore A/D) |
Specific Gravity (g/cm³) |
Tensile Strength (N/mm²) |
Elongation at Break (%) |
Tear Strength (N/mm) |
|---|---|---|---|---|---|
| LPR2203-93A | 91A | 1.14 | 58.0 | 470 | 80 |
| LPR107-90A | 90A | 1.18 | 63.1 | 505 | 85 |
| LPR107-93A | 93A | 1.19 | 62.5 | 510 | 96 |
*Values shown are representative manufacturer data for preliminary material selection only. Please contact HTChem to discuss specific operating conditions, performance requirements, and material selection.
FAQ
Q1: What is TPU?
Thermoplastic polyurethane (TPU) is a thermoplastic elastomer that combines rubber-like flexibility and elasticity with the processing advantages of conventional thermoplastics.
Unlike thermoset rubber, TPU can be softened by heat and processed using common thermoplastic manufacturing methods such as injection molding and extrusion.
TPU belongs to the thermoplastic elastomer (TPE) family, together with materials such as TPS, TPEE, TPV, TPO, and TPA. Its combination of mechanical strength, flexibility, abrasion resistance, and processability makes it suitable for a wide range of industrial applications.
Q2: What does the "bio-based content" of LARIPUR® RS mean?
Bio-based content refers to the portion of the material derived from renewable-source feedstocks rather than recycled material.
Depending on the grade, LARIPUR® RS offers approximately 35% to 75% bio-based content.
The materials can generally be processed using conventional TPU injection molding or extrusion equipment. Actual processing parameters should always be optimized according to the selected grade, equipment, tooling, and application.
LARIPUR® RS is designed to deliver physical and mechanical performance comparable to conventional fossil-based TPU. Please contact HTChem for the latest TDS and grade-specific performance data.
Q3: Is LARIPUR® RS made from recycled material?
No. Bio-based content and recycled content are different concepts.
LARIPUR® RS is primarily a bio-based TPU range in which part of the conventional fossil-derived raw materials is replaced with materials derived from renewable sources.
As a thermoplastic material, TPU may also be reprocessed or recycled under suitable conditions. However, actual recyclability depends on the finished product design, additives, contamination, processing history, and available recycling process.
Q4: Are other LARIPUR® grades and applications available?
Yes. LARIPUR® is a broad family of TPU materials covering a wide range of hardness levels, polymer chemistries, processing methods, and end-use applications.
Examples include:
➢ Plasticized Polyester TPU: Soft and flexible grades developed for injection molding while maintaining good abrasion resistance and physical properties. Phthalate-free options are also available.
➢ Standard Polyester TPU: Grades offering excellent rebound, tear strength, and abrasion resistance for general injection-molding applications.
➢ Special Polyester TPU: Grades developed for injection molding and extrusion applications such as tubing, films, and sheets, with improved hydrolysis resistance and low-temperature flexibility.
➢ Polycaprolactone-Based TPU: TPU grades combining excellent mechanical properties, hydrolytic-aging resistance, and low-temperature flexibility.
➢ Modified Polyester TPU: Specializedgrades combining higher hardness with improved low-temperature performance.
➢ Application-Specific Grades: Specialized TPU formulations developed for specific market, processing, or customer requirements.
For applications or grades not listed on this page, please contact HTChem for material selection assistance.
