Formulation

KOH-value [g·kg⁻¹ KOH]

Chain extender

Isocyanate

Cross-linking agent

Blowing agent

ω_Recyclate [wt-%]

T_{g, tan δ} [˚C]

P1

486^*

1,4-Butandiol

HDI-Biuret

Glycerin

Water

13.2

75

P2

486^*

1,4-Butandiol

P-MDI

Glycerin

Water

14.3

128

P3

486^*

Castor oil

HDI-Biuret

Glycerin

Water

22.4

94

P4

653^**

1,4-Butandiol

HDI-Trimer

-

-

10.0

66

P5

653^**

1,4-Butandiol

HDI-Trimer

-

-

20.0

80

P6

653^**

1,4-Butandiol

HDI-Trimer

Glycerin

-

20.0

61