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5.

Pergut Solubility

Fig. 3: Solution viscosity of Pergut in various solvents; Pergut S 40, concentration in each case 18.5 %

Cyclohexanone Tetrahydrofuran Methylene chloride Ethyl acetate Xylene Toluene Butanone

  • 0

    200 400

Solution viscosity [mPas]

Fig. 4: Solution viscosity of Pergut in solvent mixtures; Pergut S 40, concentration in each case 18.5%

2 non-solvents, 1 solvent

A/W/T* (3:5:2) A/W/T* (4:4:2) 2 non-solvents A/W* (6:4) 1 solvent, 1 non-solvent A/T* (6:4)

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    100

Solution viscosity [mPas]

200

8

600

Pergut is soluble in most aromatic solvents such as toluene or xylene. It is also soluble in most esters such as ethyl acetate and cy- clohexyl acetate, in ketones such as methyl ethyl ketone and in chlorine-containing hy- drocarbons. Pergut is insoluble in alcohols, aliphatic hy- drocarbons and terpenes. Like Baypren®, it is also possible with Pergut to dissolve the polymers in solvent mixtures consisting of solvents and non-solvents, al- though the final viscosity will depend very much on the respective solvent combina- tion.

800

1,000

1,200

1,400

*A = acetone, *W= white spirit, *T = toluene

300

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500

600

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