Neuthane 200 Series TDI - Ester Prepolymers (70 - 95 Shore A)

Properties

The Neuthane 200 series are high perfomance TDI – ester prepolymers designed to produce items for use in arduous application areas.

They offer:

  • a high level of physical properties
  • good cut and abrasion resistance
  • good chemical resistance
  • hardness range from 75 - 95A (MOCA)
  • hardness range from <40 – 60A (TMP)

Typical Applications

  • Medium load roller coverings (e.g. steel industry – dry application areas)
  • Roller coverings where lubricants are present (e.g. aluminium manufacture)
  • Wheels (e.g. pallet truck)
  • Mining and quarrying (e.g. screen decks, scraper blades)
  • Oil and gas industry (e.g. gaskets, pipe pigs)
  • Press blocks
  • Paper converting (e.g. anvil rollers)

Processing can be by hand or by dispensing machine

Hand Processing

  • Melt prepolymer at 50-70°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
  • 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 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

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]
  • Non MOCA – MDI based systems should be considered: Neuthane 700 [Prepolymer] and 802 [Quasi]

To view the full width of the table, turn your mobile to landscape.

Neuthane 200 Series TDI - Ester Prepolymers (70 - 95 Shore A)

Neuthane 223 223F 225 235S 235S 235
%NCO (mid-point) % 2.3 2.3 2.5 3.5 3.5 3.5
Curative E300 (CA6) MOCA MOCA MOCA E300 (CA6) MOCA
Mix Ratio Curative per 100 Parts Resin % 5.6 5.6 7.5 10.6 8.5 10.6
Recommended Stoichiometry by weight 95 95 95 95 95 95
Resin Temperature °C 70 70 85 85 80 - 90 85
Curative Temperature °C 40 100 110 110 40 110
Recommended Mould Temperature °C 90 90-100 95 95 90 95
Viscosity @ 100°C (prepolymer) cps 850 850 1030 860 1050 950
Pot life (on a 500g mix) minutes 10 - 20 9 17 15 13 7.5
Recommended Cure Temperature / Time °C / hrs 90 - 100 / 16 90-100 / 16 95 / 16 95 / 16 90 - 100 / 16 95 / 16
Hardness DIN 2240-91 Shore A 70 74 76 85 83 86
DIN 2240-91 Shore D - - - - - -
100% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

381

(2.63)

412

(2.84)

480

(3.3)

760

(5.2)

- 840

(5.8)

300% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

590

(4.07)

589

(4.06)

770

(5.3)

1310

(9.1)

970

(6.7)

1420

(9.8)

Tensile Strength BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

2161

(14.9)

3350

(23.10)

5400

(37.3)

7400

(51.0)

5800

(40.0)

7360

(50.7)

Elongation at Break BS 903 Pt A2 - ISO 37 % 965 817 750 570 700 630
Tear Strength BS 903 Pt A3 - ISO 34-1 lb/in

(KN/m)

353

(63)

313

(55)

340

(59.5)

475

(83.5)

460

(80.5)

495

(86.8)

Compression Set BS903 Pt A6 - ISO 815 % 43.8 33.8 27 37 - 35
Abrasion loss DIN 53516 mm³ 21 74.8 43 42 - 40
Resilience ASTM D 2632-92 % 51 42 40 30 - 36
Specific Gravity g/cm³ 1.15 1.16 1.23 1.24 1.24 1.24

Neuthane 200 Series TDI - Ester Prepolymers (40 - 60 Shore A with TMP & Plasticiser)

Properties

The Neuthane 200 series cured with TMP and plasticised produces low hardness polyurethanes with (in the case of Neuthane 234 and 242) exceptional solvent swell resistance.

They offer:

  • long pot life
  • excellent solvent swell resistance
  • good cut resistance
  • hardness range from <40 - 60A
  • the option to be combined with fillers to reduce cost and improve grinding characteristics (Neuthane FP3)

Typical Applications

  • Lacquer and paint applicator rollers and wheels (Neuthane 235, 234 & 242)*
  • Isostatic bage (Neuthane 235)
  • Printing rollers

Processing can be by hand or by dispensing machine

Hand Processing

  • Melt prepolymer at 60-70°C for 16-24 hours
  • Heat the prepolymer and curative to the  recommended temperature
  • Remove moisture from plasticiser or FP3 (after blending) under vacuum at 110-120°C
  • Add pigments and Antifoam, as applicable, whilst mixing
  • 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)
  • If using more than one mix, blend to ensure homogeneity and mix 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

Alternatives

  • Abrasion / Cut resistance - Neuthane 802 system [MDI Quasi] will offer an advantage
  • Humid / Wet – PTMEG ether based systems should be considered: Neuthane 801 [MDI Quasi] or Neuthane 600 [MDI Prepolymer with Neuthane CA curative]

Neuthane 200 Series TDI - Ester Prepolymer (cured with Neuthane TMP/TIPA & Plasticiser)

Neuthane 234 235S 235S 242S 242S
%NCO (mid-point) % 3.4 3.5 3.5 4.2 4.2
Curative * TMP TMP / TIPA TMP / TIPA TMP / TIPA TMP / TIPA
Mix Ratio Curative per 100 Parts Resin by weight 3.57 4.06 4.06 4.87 4.87
Neuthane Plasticiser per 100 Parts Resin by weight 0 0 20 0 20
Resin Temperature °C 85 85 85 90 90
Curative Temperature °C 70 70 70 70 70
Plasticiser Temperature °C 0 - 85 - 90
Recommended Mould Temperature °C 110 110 110 110 110
Viscosity @ 100°C (prepolymer) cps 300 860 860 700 700
Pot life (on a 500g mix) minutes 30+ 30 30 30 30
Recommended Cure Temperature / Time °C / hrs 110 / 22 110 / 22 110 / 24 110 / 20 110 / 22
Hardness DIN 2240-91 Shore A 53 50 40 62 55
100% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

148

(1.02)

184

(1.26)

141

(0.97)

359

(2.47)

248

(1.71)

300% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

354

(2.44)

333

(2.29)

251

(1.73)

1078

(7.43)

631

(4.35)

Tensile Strength BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

1590

(10.96)

2484

(17.12)

2055

(14.16)

5541

(38.20)

2257

(15.56)

Elongation at Break BS 903 Pt A2 - ISO 37 % 493 567 673 371 408
Tear Strength BS 903 Pt A3 - ISO 34-1 lb/in

(KN/m)

87

(15.23)

153

(26.79)

125

(21.89)

219

(38.35)

178

(31.17)

Specific Gravity g/cm³ 1.21 1.19 1.18 1.20 1.19

* For a detailed study on the effects of stoichiometry in relation to cured hardness stability please refer to Technical Library Document 027

Neuthane 200 Series TDI - Ester Prepolymer (cured with Neuthane TMP/TIPA & Plasticiser)

Neuthane 242 243MS 254 270
%NCO (mid-point) % 4.2 4.3 5.4 7.0
Curative * TMP / TIPA TMP TMP / TIPA TMP
Mix Ratio Curative per 100 Parts Resin by weight 4.87 4.56 6.26 7.35
Neuthane Plasticiser per 100 Parts Resin by weight 20 0 0 20
Resin Temperature °C 85 85 85 85
Curative Temperature °C 70 70 70 70
Plasticiser Temperature °C 90 0 - 90
Recommended Mould Temperature °C 110 110 110 110
Viscosity @ 100°C (prepolymer) cps 830 425 450 300
Pot life (on a 500g mix) minutes 30 30+ 30 30+
Recommended Cure Temperature / Time °C / hrs 110 / 24 110 / 22 110 / 24 110 / 24
Hardness DIN 2240-91 Shore A 53 58 65 60
100% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

203

(1.40)

208

(1.43)

402

(2.77)

273

(1.88)

300% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

450

(3.10)

522

(3.60)

3000

(20.68)

-
Tensile Strength BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

2331

(16.07)

2830

(19.51)

4298

(29.63)

-
Elongation at Break BS 903 Pt A2 - ISO 37 % 491 456 311 159
Tear Strength BS 903 Pt A3 - ISO 34-1 lb/in

(KN/m)

143

(25.04)

96

(16.81)

175

(30.64)

79.7

(13.95)

Specific Gravity g/cm³ 1.19 1.20 1.19 1.17

* For a detailed study on the effects of stoichiometry in relation to cured hardness stability please refer to Technical Library Document 027

Neuthane 200 Series TDI - Caprolactone Ester Prepolymers (60 - 95 Shore A)

Properties

The Neuthane 200 Caprolactone series are high perfomance TDI – ester prepolymers designed to produce items for use in arduous application areas. They offer advantages over conventional ester TDI prepolymers in several key areas.

They offer:

  • a high level of physical properties
  • good cut and abrasion resistance
  • good chemical resistance
  • good low temperature flexibility
  • low viscosity and long pot life*
  • improved hydrolysis resistance*
  • improved dynamic performance*
  • low hardness with MOCA

* Compared with conventional TDI ester prepolymers

Typical Applications

  • Medium load roller coverings (e.g. steel industry)
  • Roller coverings where lubricants are present (e.g. Dioctyl Sebacate)
  • Mining and quarrying (e.g. screen decks, scraper blades)
  • Oil and gas industry (e.g. gaskets)

Processing can be by hand or by dispensing machine

Hand Processing

  • Melt prepolymer at 50-70°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
  • 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 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

  • Avoid prolonged storage of prepolymers at elevated temperatures. This will result in low hardness and lower properties of the cured material
  • It is important when processing Neuthane 230 that the correct temperatures are maintained. Failure to do so may result in incorrect cured hardness
  • Avoid moisture contamination of all materials
  • Part used containers should be flushed with dry nitrogen and resealed immediately after use

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]
  • Cost – Conventional ester based systems will offer a price advantage: Neuthane 200 [TDI], Neuthane 802 [MDI Quasi]
  • Solvents – Conventional ester TDI offer the best performance
Neuthane 230 230 232 244 251 255 255
%NCO (mid-point) % 3.2 3.2 3.2 4.4 5.1 4.4 4.4
Curative MOCA E300 (CA6) MOCA MOCA MOCA MOCA E300 (CA6)
Recommended Stoichiometry % 95 95 95 95 95 95 95
Mix Ratio Curative per 100 Parts Resin by weight 9.92 7.95 9.7 13.3 15.4 16.6 13.3
Resin Temperature °C 80 80 80 70 70 70 70
Curative Temperature °C 105 40 110 110 110 110 90
Recommended Mould Temperature °C 90 90 90 90 90 90 90
Viscosity @ 100°C cps 650 650 710 500 343 500 300
Pot life (on a 500g mix) minutes 18 13 14 9 6.5 9 6.5
Recommended Cure Temperature / Time °C / hrs 90 / 20 90 / 20 90 / 18 90 / 18 90 / 18 90 / 18 90 / 18
Hardness DIN 2240-91 Shore A 59 78 80 90 92 95 91
DIN 2240-91 Shore D - - - - - -
100% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

255

(1.76)

715

(4.93)

560

(3.9)

1200

(8.3)

1080

(7.4)

1600

(11.0)

1570

(10.82)

300% Modulus BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

400

(2.76)

1260

(8.68)

1130

(7.8)

2500

(17.2)

3890

(26.8)

3000

(20.7)

3280

(22.61)

Tensile Strength BS 903 Pt A2 - ISO 37 lb/in²

(Mpa)

2920

(20.13)

5685

(39.2)

6580

(45.4)

6700

(46.2)

8340

(57.5)

7000

(48.2)

8700

(59.98)

Elongation at Break BS 903 Pt A2 - ISO 37 % 475 517 400 350 400 300 489
Tear Strength BS 903 Pt A3 - ISO 34-1 lb/in

(KN/m)

172

(30.12)

392

(68.65)

350

(61.0)

490

(85.7)

480

(84.2)

550

(96.2)

617

(108.05)

Compression Set BS903 Pt A6 - ISO 815 % 17 35 39 40 32 45 47.7
Abrasion loss DIN 53516 mm³ 38.3 54.8 49 49 38 49 58
Resilience ASTM D 2632-92 % 24 50 42 35 22 33 25
Specific Gravity g/cm³ 1.12 1.11 1.14 1.14 1.15 1.14 1.14

Information contained in the data above 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.