EVONIK DYNACOLL® Terra

DYNACOLL® 7000 & DYNACOLL® Terra building block systems of polyester-polyols are ideal raw materials for reactive hot melts. They are used in several industries, such as wood-working and automotive.  

Form

Grade* 

Proportion of Renewables【%】

Hydroxyl
Number 1)

Acid
Number 1)

Molecular
Weight

Glass Transition
Temperature

Melting
Point

Softening
Point

Melt
Viscosity

[mg KOH/g]

[mg KOH/g]

[g/mol]

[℃]

[℃]

[℃]

[Pa•s]

Amorphous

7540

>35

40

≤2

2800

40

 

90

17 (130°C)

Liquid

7640

>75

30

≤2

3,500

-45

 

 

  4 (80°C)

Crystalline

7750

100

30

≤2

3,500

-45

55

65

  2 (80°C)

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REACTIVE HOLT MELT DATA

Reaction products of DYNACOLL® 7000 with: 4,4 – MDI as a ratio of OH : NCO = 1 : 2.2

Form

Grade*

Softening
Point

Open Time

Setting Time

130 °C

Tensile Strength

Elongation at Break

[Parallel plate]

[℃]

[s]

[s]

[Pa•s]

[N/mm2]

[%]

Amorphous

7540

100

1

<1

65

 

brittle

Liquid

7640

 

 

 

4

15

1,300

Crystalline

7750

60

600

200

5

22

500