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ISOTHANE 5000 Series Bio-compatible Grade

Item NameISOTHANE 5000 Series Bio-compatible Grade
Characteristics ISOTHANE®5000 series products are polyether based thermoplastic polyurethanes. They exhibit excellent bio-compatibility according to USP class VI hydrolytic resistance, fungus resistance, and low temperature performance properties. ISOTHANE®5000 series can be injection molded , blow molded, and extruded.
Suggested Applications Medical Tubing and Medical Disposable Applications.
Item NamePolyether based TPU Resins Bio-compatible Grade
Description ISOTHANE 5000 series products are polyether based thermoplastic polyurethanes. They exhibit excellent bio-compatibility, hydrolytic resistance, fungus resistance, and low temperature performance properties. These products can be injection molded, blow molded, and extruded.
Supply and Storage ISOTHANE TPU resins are supplied in pellet form packed in 25kg moisture proof bags. All TPU resins have been dried before packing. ISOTHANE TPU resins should be stored in cool and dry environment in their original containers until be used. Storage temperature should not exceed 30°C. If only a portion of TPU resins was used from a bag, the remainder of TPU resins should be tightly closed.
Drying TPU resins are hygroscopic and pre-drying of TPU resins is always a necessary step before processing. Depend on the climate, the granule exposed to the atmosphere will absorb moisture very quickly. The moisture might bring about partial degradation of polymers and the formation of bubbles or streaks in the molded and extruded parts. In order to ensure the efficient and successful processing into quality parts, the moisture content in TPU resins is recommended less than 0.02%.

A desiccant-bed-type hopper dryer is recommended for drying ISOTHANE 5000 series. The dew point of the inlet air should be in the range of -30 to -40°C. About the recommended drying conditions, please view ISOTHANE individual data sheets.
Processing - Extrusion Barrel and Motor
  • High torque drive capacity at low speed
  • Vented or standard barrels acceptable
Screw
  • Compression ratios between 2:1 and 3:1
  • Minimum L/D of 30/1
Feed Throat
  • Vertical and tangential
  • Water cooling is recommended
Screen Pack
  • Streamlined breaker plates with screen packing is recommended
  • Typical 40/80/80/40 mesh screens
Die
  • Streamline with good temperature control
  • Land Length is generally 10 to 15 times the part thickness
  • Coat-hanger manifold-type dies are recommended for extruding film and sheet
  • Crosshead dies are recommended for wire, cable and hose jacketing
  • Side-fed rotating dies are recommended for blown film
About the recommended extrusion temperatures, please view ISOTHANE individual data sheets.
Processing - Injection Molding Barrel and Motor
  • High torque drive capacity at low speed
  • Vented or standard barrels acceptable
Screw
  • Compression ratios between 2:1 and 3:1
  • Metering screw with gradual transition zone
Injection Pressure
  • Typical 6,000 to 15,000 psi
  • Hold pressure 60 – 70% of forward time
Injection speed
  • Slow to moderate
  • Depends on gating, wall section and flow length
About the recommended injection molding temperatures, please view ISOTHANE individual data sheets.
Coloring Generally, ISOTHANE TPU resins are supplied in their natural color. They can be colored by blending with pigment or pigment master batch. Using master batch based on TPU is recommended. Other master batch based on polyethylene or polystyrene is suitable to a limited extent. All colorants employed in TPU resins must be pre-dried before processing.

The normal addition of pigment or pigment master batch is 0.2%-0.5% or 1-3%.
Additives Various additives can be used to enhanced the properties of ISOTHANE TPU resins, e.g. anti-blocking agents, antioxidant, UV stabilizers or release agents. Most additives supplied as master batches are available. But not all additives are compatible with ISOTHANE TPU resins. It is recommended to inquire of your suppliers or our technical service before compounding.
Recycling For ISOTHANE TPU resins, up to 20% of regrind may be recycled with virgin material depending on finished parts requirements. The regrind material has to be kept free of contamination, diced and dried before re-using. The material which has been contaminated, discolored or degraded is not suitable for recycling. TPU resins may decrease desired properties, e.g. hardness and mechanical properties, due to improperly mixing with regrind.
Regulatory or testing organizations (e.g., UL) may have specific requirements limiting the allowance amount of regrind. Certain quality requirements laid down in specifications may exclude the use of regrind material.
Healthy and Safety Information Before working with these products, it is essential that all operators are aware of the healthy and safety precautions. ISOTHANE TPU resins can be processed or machined over a wide range of temperature. There can be some smoke formation during processing. The smoke that contains some decomposition substances of TPU or additives may cause irritation to human body. Generally, the temperature does not exceed 240°C that can reduce decomposition formation. An effective extraction system, especially in the melt outlet zone, is necessary. The detail information concerning healthy and safety can be available in safety data sheets (SDS) or contact our technical service.
Disposal ISOTHANE TPU resins present no hazard to the environment or water. They can be dumped on municipal landfill or in a waste incineration plant. The official regulations on waste disposal should be observed.
ItemUnitsASTM5075A5080A5085A5090A5095A
Specific Gravity D-792 1.10 1.12 1.13 1.13 1.15
Hardness Shore A D-2240 75A 82A 85A 90A 95A
Tensile Strength MPa
psi
D-412 31
4500
37
5300
39
5600
41
6000
51
7300
@ 50% elongation MPa
psi
D-412 2.3
340
3.6
520
3.9
560
6.2
900
15
2180
@ 100% elongation MPa
psi
3.2
460
5.4
780
5.9
850
8.3
1200
19
2820
@ 300% elongation MPa
psi
5.9
850
10
1500
12
1800
17
2400
36
5240
Elongation @ Break % D-412 650 620 540 550 438
Tear Strength N/mm
lb/in
D-624
DIE C
70
400
80
450
90
500
120
700
190
1060
Flexural Modulus MPa
psi
D-792 29
4140
35
5050
43
6200
72
10400
96
14000
ItemUnitsASTM5055D5065D5075D8101-B8102-B
Specific Gravity D-792 1.17 1.17 1.18 1.20 1.18
Hardness Shore D D-2240 57D 65D 74D 80D 76D
Tensile Strength MPa
psi
D-412 51
7340
53
7670
54
7760
75
11000
60
8700
@ 50% elongation MPa
psi
D-412 25
3610
35
5030
46
6640
1480
214000
1080
156000
@ 100% elongation MPa
psi
31
4490
40
5790
46
6740
@ 300% elongation MPa
psi
48
6980
49
7110
52
7540
Elongation @ Break % D-412 400 340 322 125 150
Tear Strength N/mm
lb/in
D-624
DIE C
225
1280
270
1540
370
2100
- -
Flexural Modulus MPa
psi
D-792 134
19500
420
60800
1360
197000
1730
250000
1370
198000

While the above information is presented in good faith and believed to be accurate, GRECO does not guarantee satisfactory results from reliance upon such information and disclaims all liability for any loss or damage arising out of its use.

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