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Isocyanates and Polyols

Isocyanates 

Lupranat® isocyanates from BASF are utilized across a large range of applications and industries. Products include monomeric and polymeric methylene diphenyl isocyanate (MDI), toluene diisocyanate (TDI), modified MDI, and MDI prepolymers.

Toluene Diisocyanate (TDI)

In the chemical industry, TDI is an important intermediate for the production of adhesives, foams for many industries as automotive, aviation or furniture, polyurethanes and elastomers. 

BASF’s Lupranat® T 80 is a mixture of 80% 2,4-isomer and 20% 2,6-isomer of Toluene Diisocyanate (TDI). Lupranat® T 80 is used for the production of slabstock and molded foam as well as for various CASE applications.

Product  NCO (%) Viscosity [mPa*s] Viscosity Temperature [°C] Description Technical data sheets

Lupranat® T 80

48,2

3

25

Blend of 80% 2,4- and 20% 2,6 toluene diisocyanate (TDI). Used mainly for the manufacturing  of polyurethane flexible foams for the mattress, furniture and automotive industries. It is also used for the production of polyurethane paints, adhesives and textile coatings.

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Methylen Diphenyldiisocyanate (MDI)

Methylen Diphenyldiisocyanate is an essential raw material for polyurethanes, polyamidimid or foam, insulating foam and adhesives. It is one of the world’s most produced isocyanates besides TDI. In rare cases technical Diphenyl Methandiisocyanate is also used for the gluing for MDF-panels.

Monomeric MDI (mMDI) refers to 4,4’- and 2,4’-isomers of Methylen Diphenyldiisocyanate. BASF offers two standard monomeric MDI grades: pure 4,4’-MDI and a blend of 4,4’-MDI and 2,4’-MDI. Besides the standard mMDIs, various mMDI types with different stabilization and reactivity are available. Although pure 4,4’-MDI is a crystalline solid at room temperature, it is commercially available as a liquid but with a limited shelf life. Monomeric MDIs are either used as pure isocyanate, in mixtures with polymeric MDI (pMDI) or in prepolymers for flexible foams, CASE applications, shoe soles or thermoplastic polyurethanes.

Name

NCO content %

Vicosity mPa*s

Measured at °C

Description / Application

Technical data sheets

Lupranat® ME

33,5

5

42

Pure monomeric 4,4'-MDI with low acidity. Used for the manufacture of elastomers and thermoplastic polyurethanes. It is also used for the production of pigments, adhesives and coatings.

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Lupranat® MEB

33,5

5

42

Pure monomeric 4,4'-MDI with low acidity, contains a stabiliser to prevent from yellowing. Used for the manufacturing of elastomers and thermoplastic polyurethanes,  but also to produce paintings, adhesives and coatings

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Lupranat® MES

33,5

5

42

Pure monomeric 4,4'-MDI with low acidity, contains a stabiliser to prevent from yellowing. Used for the manufacturing of elastomers and thermoplastic polyurethanes,  but also to produce pigments, adhesives and coatings

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Lupranat® MESA frozen

33,5

5

42

Pure monomeric 4,4'-MDI with low acidity, contains a stabiliser to prevent from yellowing. Used for the manufacturing of elastomers and thermoplastic polyurethanes,  but also to produce pigments, adhesives and coatings. Not suitable for products getting in touch with foodstuff.

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Lupranat® MI

33,5

12

25

Blend of monomeric 4,4'-MDI and 2,4'-MDI. Together with other isocyanates used for the manufacture of flexible foams, adhesives and coatings.

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Lupranat® MIB

33,5

12

25

Blend of monomeric 4,4'-MDI and 2,4'-MDI, contains a stabiliser to prevent from yellowing. Together with other isocyanates it is used for the manufacturing of flexible foams, adhesives and coatings 

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Lupranat® MIP

33,5

12

25

Blend of monomeric 4,4'-MDI and 2,4'-MDI with reduced 2,2'-MDI content.  Together with other isocyanates, Lupranat MIP is used for the manufacture of flexible foams,
adhesives, and coatings.

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Lupranat® MIPS

33,5

 

 

Blend of monomeric 4,4'-MDI and 2,4'-MDI with reduced 2,2'-MDI content, contains a stabiliser to prevent from yellowing. Together with other isocyanates it is used for the manufacturing of flexible foams, adhesives and coatings 

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Lupranat® MIS

33,5

12

25

Blend of monomeric 4,4'-MDI and 2,4'-MDI , contains a stabiliser to prevent from yellowing. Used for the manufacturing of flexible foams, adhesives and coatings. Not suitable for products getting in touch with foodstuff.

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Lupranat® MR

33,5

5

42

Pure monomeric 4,4'-MDI with high acidity. Used for the manufacturing of prepolymers, pigments, adhesives and coatings.

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Lupranat® MRS

33,5

5

42

Pure monomeric 4,4'-MDI with high acidity, contains a stabiliser to prevent from yellowing. Used for the manufacturing of prepolymers, pigments, adhesives and coatings. Not suitable for products getting in touch with foodstuff.

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Lupranat® MRSA frozen

33,5

5

42

Pure monomeric 4,4'-MDI with high acidity, contains a stabiliser to prevent from yellowing. Used for the manufacturing of prepolymers, pigments, adhesives and coatings. Not suitable for products getting in touch with foodstuff.

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Given the handling and storage difficulties associated with pure 4,4' MDI, carbodiimide chemistry is often used to modify and stabilize monomeric Methylene Diphenyldiisocanate (mMDI). Carbidiimide modified isocyanates are liquids that are stable and clear at room temperature. These products contain a portion of mMDI that is reacted to give a tri-functional uretonimine species within the remaining difunctional mMDI.

Product  NCO (%) Viscosity [mPa*s] Viscosity Temperature [°C] Description Technical data sheets

Lupranat® MM 103

29,5

39

25

Carbodiimide modified 4,4'-MDI. Used for the production of flexible polyurethanes such as microcellular elastomers, flexible and semi-rigid foams as well as for compact RIM parts. It is also used for the manufacturing of coatings and adhesives.

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Polymeric Methylene Diphenyldiisocyanate (pMDI) is a brown mixture of monomeric (2-ring) and polyaromatic 3-ring and higher species) Methylene Diphenyldiisocyanates, which is liquid at room temperature. A higher pMDI viscosity indicates a lower content of monomeric and a higher content of polyaromatic components; that is, as pMDI viscosity increases, so does isocyanate functionality. BASD offers a range of pMDIs with different functionality and reactivity. PMDI is mainly used for the production of rigid foam, pMDI grades are also used as a bindeer in the wood-working industry. In combination with mMDI grades, polymeric MDI is also used to produce various types of flexible foam and CASE applications.

Polymeric Methylene Diphenyldiisocyanates (pMDI)

Product  NCO (%) Viscosity [mPa*s] Viscosity Temperature [°C] Description Technical data sheets

Lupranat® M 10R

31,5

110

25

solvent-free polymeric 4,4 - MDI containing oligomers of high functionality and isomers. The average functionality is about 2.6. Used for the production of fillers, casting materials, binders and adhesives.

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Lupranat® M 20R

31,5

220

25

solvent-free polymeric 4,4 - MDI containing oligomers of high functionality and isomers. It has relatively low reactivity, the average functionality is about 2.7. Used for the production of insulating foams, casting materials, binders and adhesives

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Lupranat® M 20S

31,5

210

25

solvent-free polymeric 4,4 - MDI containing oligomers of high functionality and isomers. The  average functionality is about 2.7. Used for the production of insulating foams in the automotive industry and sound insulation as well as for packaging foams, casting materials, binders and adhesives

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Lupranat® M 20FB

31,5

210

25

solvent-free polymeric  4,4 - MDI with high reactivity, containing oligomers of high functionality and isomers. The  average functionality is about 2.7. Used as a binder for wooden panels (allows rapid demoulding) and for the production of rebounded foam with superheated steam.

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Lupranat® M 50

31,5

550

25

solvent-free polymeric 4,4 - MDI containing oligomers of high functionality and isomers. The average functionality is 2.8 to 2.9. Used for the production of rigid foam blocks and insulation panels.

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Lupranat® M 70R

31,5

650

25

solvent-free polymeric 4,4 - MDI containing oligomers of high functionality and isomers. The average functionality is 2.8 to 2.9. Used for the production of rigid foam blocks and thick insulation panels.

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In addition to the standard polymeric MDI (pMDI) and monomeric MDI (mMDI) grades, BASF offers isocyanate prepolymers and isocyanate mixtures optimized for certain applications. Prepolymers are modified isocyanates accessible by a reaction of isocyanates or isocyanate mixtures with polyether polyols. BASF’s isocyanate mixtures and prepolymers have been designed to provide excellent processing performance combined with outstanding mechanical properties of the final product.

Methylene Diphenyldiisocyanate (MDI) Prepolymers and Mixtures

Product  NCO (%) Viscosity [mPa*s] Viscosity Temperature [°C] Description Technical data sheets

Lupranat® MP 102

23

650

25

modified 4,4'-MDI with an average functionality of about 2.05. Used for the production of shoe soles, flexible and semi-rigid foams and RIM parts.

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Lupranat® MP 105

28,5

120

25

modified 4,4'-MDI with an average functionality of about 2.4. Used for the production of rigid and flexible skin foams, flexible foam, soatings and adhesives.

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Lupranat® MP 109/1

28,3

60

25

modified 4,4'-MDI containing oligomers of high functionality and isomers. Used for the production of highly elastic/flexible slabstock and moulded parts.

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Lupranat® MP 111/1

20,5

325

25

prepolymer based on 4,4'- MDI. Used for the production of rebounded foam with superheated steam.

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Lupranat® MX 118/1

32,8

30

25

Solvent-free product based on 4,4'- MDI containing oligomers of high functionality and isomers. Used for the production of flexible foams.

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Lupranat® MX 119/1

33,5

10

35

Blend of monomeric 4,4'-MDI and 2,4'-MDI. Used together with other isocyanates for the production of flexible foams, adhesives and coatings

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Lupranat® MX 121/1

33,0

19

25

Solvent-free product based on 4,4'- MDI containing oligomers of high functionality and isomers.The average functionality is 2.8. Used for the production of binders, coatings, adhesives and casting materials.

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