| Neuthane Product number | ||||
| Neuthane 700 Series MDI-Ester Prepolymers | Shore A | Curative | click on reference | |
| 80 | 1,4 - Butanediol | 760 | ||
| 85 | 1,4 - Butanediol | 765 | ||
| 85 | 1,4 - Butanediol | 766 | ||
| 90 | 1,4 - Butanediol | 775 | ||
| 95 | 1,4 - Butanediol | 795 | ||
| Neuthane 700 Series MDI-Ester Prepolymers - High Resilience | 80 | 1,4 - Butanediol | 760HR | |
| 85 | 1,4 - Butanediol | 765HR | ||
| 90 | 1,4 - Butanediol | 775HR | ||
| 95 | 1,4 - Butanediol | 795HR | ||
| Neuthane 700 AW Series MDI-Ester Prepolymers | ||||
| 85 | 1,4 - Butanediol | 765AW | ||
| 95 | 1,4 - Butanediol | 795AW |
 |
| High Performance Cast Elastomers |
| Neuthane 700 Series |
Neuthane™ 700 Series MDI – Ester Prepolymers (80 – 95 Shore A)
Properties
The Neuthane 700 series are high performance MDI - ester prepolymers designed to produceitems for use in arduous application areas.
They offer:
- a high level of physical properties
- good cut and abrasion resistance
- good chemical resistance
- extended hardness range with CA curatives
Typical Applications
- Mining and quarrying (e.g. screen decks, scraper blades)
- Medium load roller coverings (e.g. steel industry – dry applications)
- Oil and gas industry (e.g. gaskets, pipe pigs)
- Wheels (e.g. pallet truck)
Processing can be by hand or by dispensing machine
Hand Processing
- Melt prepolymer at 60-70°C for 12-24 hours (as a guide the grades with the lower NCO value will takelonger to melt than those with higher NCO values)
- Heat the prepolymer and curative to the recommended temperature
- Ensure 1:4 Butanediol is dry by applying vacuum at 115°C
- Add pigments and Antifoam, as applicable, whilst mixing
- It is recommended that air be removed from the prepolymer under vacuumprior to addition of the curative
- Add the curative and thoroughly mix ensuring that no unmixed material is left on the container sides (if necessary the mix can be transferred to a second clean container and mixed again)
- Remove air under vacuum
- Cast into moulds, preheated to the recommended temperature
- Cure as recommended
Processing Considerations
- Avoid prolonged storage of prepolymers at elevated temperatures.
- This will result in low hardness and lower properties of the cured material
- Avoid moisture contamination of all materials
- Part used containers should be flushed with dry nitrogen and resealed immediately after use
- Development of cure is long compared to TDI-MOCA systems.
- Rapid temperature change during the early stages of cure should be avoided.
Alternatives
- Humid / Wet – PTMEG ether based systems should be considered: Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 500 [Aliphatic]
- Dynamic / Resilience – PTMEG ether based materials should be considered:Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 801 [MDI Quasi]
- Temperature – Neuthane 100 [TDI PTMEG] or Neuthane 500 [Aliphatic Isocyanate]
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Neuthane 700 Series MDI – Ester Prepolymers (80 – 95 Shore A)
|
| High Performance Cast Elastomers |
| Neuthane 700 Series |
Neuthane™ 700AW Series MDI – Ester Prepolymers (85 – 95 Shore A)
Properties
The Neuthane 700AW series are high performance MDI - ester prepolymers designed to produce items requiring a combination of high resilience and excellent tear strength compared to other prepolymers the ‘AW’ materials are characterised by not only impressive DIE C tear strength but also Trouser tear.
They offer:
- a high level of physical properties
- good cut and abrasion resistance
- high resilience
Typical Applications
- Mining and quarrying (e.g. screen decks, scraper blades)
- Medium load roller coverings (e.g. steel industry – dry applications)
- Wheels (e.g. pallet truck)
Processing can be by hand or by dispensing machine
Hand Processing
- Melt prepolymer at 60-70°C for 12-24 hours (as a guide the grades with the lower NCO value will take longer to melt than those with higher NCO values)
- Heat the prepolymer and curative to the recommended temperature
- Ensure 1:4 Butanediol is dry by applying vacuum at 115°C
- Add pigments and Antifoam, as applicable, whilst mixing
- It is recommended that air be removed from the prepolymer under vacuum prior to addition of the curative
- Add the curative and thoroughly mix ensuring that no unmixed materialis left on the container sides (if necessary the mix can be transferred to a second clean containerand mixed again)
- Remove air under vacuum
- Cast into moulds, preheated to the recommended temperature
- Cure as recommended
Processing
- Avoid prolonged storage of prepolymers at elevated temperatures.
- This will result in low hardness and lower properties of the cured material
- Avoid moisture contamination of all materials
- Part used containers should be flushed with dry nitrogen and resealed immediately after use
- Development of cure is long compared to TDI-MOCA systems.
- Rapid temperature change during the early stages of cure should be avoided.
Alternatives
- Humid / Wet – PTMEG ether based systems should be considered: Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 500 [Aliphatic]
- Dynamic / Resilience – PTMEG ether based materials should be considered: Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 801 [MDI Quasi]
- Temperature – Neuthane 100 [TDI ] or Neuthane 500 [Aliphatic Isocyanate] should be considered
Neuthane 700AW Series MDI – Ester Prepolymers (85 – 95 Shore A)
Information contained in the data is, to the best of our knowledge, true and accurate. Since conditions of use are beyond our control, no warranty is given or implied in respect of any recommendations or suggestions made by ourselves, nor is freedom from patent infringement inferred