Raw Material Selection of PolyurethanesPolyethylene glycolS

Polyethylene glycolS foR PolyuRethaneS

claRiant offeRS a Selected Range of Polyethylene glycolS foR the SyntheSiS of PolyuRethaneS

Polypropylene glycols and copolymers with up to 15% ethylene oxide are used most fre-quently in production of standard polyurethanes like flexible foams, thermoplastic and elastomeric polyurethanes. Polyethylene glycols as offered by Clariant are raw materials for selected polyurethane elastomers, dispersions and urethane thickeners used in the coatings industry.

HEUR thickeners (Hydrophobically modified ethoxylated urethane) are made from hydrophilic polyethylene glycols. They improve the rheology of a paint and give good anti-splattering in emulsion paints. The hydrophobic ends of the polyurethane thickener can interact with hydrophobic emulsion particles and form an associative network. These association leads to an immobilization of the compounds which causes a thickening effect (Fig. 1). The polyethylene glycol moiety within the thickener (Fig. 2) improves the solu-bility and stability in the aqueous phase.

Beyond this polyethylene glycols are employed in production of aqueous polyurethane dispersions for e.g. textile and leather coatings. Modified elastic Polyurea can be made from two reactive components, wherefrom functionalized polyetherglycols are one.

> low sodium grades

> low water content

> narrow molecular weight distribution

> low content of by products

BenefitS of the claRiant Polyglykol PRoduct Range

foRMation of aSSociative netwoRk of PolyuRethane thickeneRS

geneRal StRuctuRe of heuR-thickeneRS; Blue: Polyethylene glycol Moiety within the thickeneR

surfactantmicell

HeUr

Reaction of diisocyanates together with dihydroxy functional poly-glycols results in linear polyurethanes, whereas use of trifunctional and tetrafunctional isocyanates and polyglycols – e.g. polyglycols from the P41 series – results in cross-linked polyurethanes. M-type polyglycols contain only one terminal OH group, resulting in chain terminations in reactions with isocyanates.

Polyglycol RangeS foR PolyuRethaneS

PR-type polyglycolsThe chemical structure of PR-type polyglycols is nearly the same as that of pure polyethylene glycols with the same molar mass. Their chemical properties and applications are comparable. The essential difference seen in these products is a central branching. Due to this, their melting point / pour point is 20 to 30°C lower than that of pure polyethylene glycols with the same molar mass.

As with all polyglycols, they show practically no tendency to eva-porate, even at temperatures >100°C.

OHO

Hn

OO

Hn CH3

OHO

OO

Hm

n

Polyethylene glycols (Pegs)Polyethylene glycols are linear homopolymers of ethylene oxide. They are available in a molecular weight range of 200 to 12,000. The physico-chemical properties of polyethylene glycol are essen-tially determined by the two free hydroxyl groups and the ether oxygen atoms. The available product forms for PEG types 1,500 to 12,000 include flakes (S), powder (P) and spray powder (PS); types 3,350-8,000 are also available as fine powder (PF). Types 1,500-

10,000 are also supplied to large-volume customers in heated tank lorries in the form of melts (FL). Clariant offers as well a low sodium grade with up to max. 30 ppm sodium (PU).

M-type polyglycols (M-Pegs)M-series polyglycols are linear, mono-hydroxy-functional polyethy-lene glycol monomethyl ethers that are completely soluble in water and are available with molecular weights between 350 and 5,000. The key factor in the quality of M-PEGs is a low content of dihydro-xy-functional contaminants. The physical properties of M-type po-lyglycols are comparable to those of pure polyethylene glycols. For

special applications in polyurethanes low sodium grades are available as well.

d-type polyglycolsPolyglykol D-types are random copolymers of ethylene glycol and propylene glycol with varying monomer ratios and molecular weights.

g-type polyglykolsPolyglykol G types are glycerol ethoxylates with varying molecular weights.

Special productsOur research and development department is well-equipped to develop on the basis of a number of initiators and epoxide compo-nents special customized products for special applications like Genamin D 01/2000 a pre-functionalized polyether amine for application in elastic polyurea.

NH2

OO

NH2n

This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant’s products for its particular application.* Nothing included in this information waives any of Clariant’s General Terms and Conditions of Sale, which control unless it agrees otherwise in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing Clariant products, are available upon request and are provided in compliance with applicable law. You should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact Clariant.® Trademark of Clariant registered in numerous countries.

* For sales to customers located within the United States and Canada the following applies in addition: NO EXPRESS OR IMPLIED WARRANTY IS MADE OF THE MERCHANTABILITY, SUITABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE OF ANY PRODUCT OR SERVICE.

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BU indUstrial & ConsUmer speCialties

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Raw MateRial Selection foR PolyuRethaneS

Raw MateRial Selection foR PolyuRea

Trade producT appearance aT 25°c

Molecular weighT in g/Mole

hydroxyl value in g Koh/g

ureThane ThicKeners

pu-dispersions, adhesives, coaTings and sealanTs

elasToMers and TherMoplasTics

Polyglykol 200 Liquid About 200 534 - 591 X

Polyglykol 600 PU Pasty About 600 178 - 197 X

Polyglykol 1000 Solid About 1000 107 - 118 X

Polyglykol 1500 FL Solid About 1500 70 - 80 X

Polygykol 3400 PU Solid About 3400 30 - 37 X

Polyglykol 6000 PU Solid About 6000 17 - 20 X

Polyglykol 8000 PU Solid About 8000 12 - 16 X

Polyglykol 9000 PU Solid About 9000 12,7 - 14,1 X

Polyglykol 10000 PU Solid About 10000 10 - 12 X

Polyglykol 12000 PU Solid About 12000 7,5 - 11 X

Polyglykol D 21/150 Liquid About 2700 About 46 X

Polyglykol D 21/300 Liquid About 4000 About 28 X

Polyglykol D 21/700 Liquid About 5600 About 21 X

Polyglykol G 500 Liquid About 500 290 - 320 X

Polyglykol M 350 PU Liquid About 350 152 - 168 X

Polyglykol M 500 PU Liquid About 500 106 - 119 X

Polyglykol M 750 A Liquid About 750 72 - 78 X

Polyglykol M 2000 SPU Solid About 2000 25,5 - 31 X

Polyglykol PR 600 Liquid About 600 178 - 197 X X

Polyglykol PR 1000 Liquid About 1000 110 - 120 X X

Trade producT appearance aT 25°c Molecular weighT in g/Mole

aMine value in Mg Koh/g

use

Genamin D 01/2000 α,ω-Bis aminopropyl polypropylene glycol ether about 2000 g/mole 52,0 - 57,0 Reactant for polyurea sealants and adhesives

Genamin M 41/2000 Methoxy polyethoxy polypropoxy propyl amine, EO:PO ratio 4:1

about 2000 g/mole 25,0 - 29,0 Intermediate for comb polymers, construction chemicals

Further grades are available from our range of polyglycols for industrial applications