SIS - Hwalong

Qingdao Hwalong Chemical Co., Ltd.

SIS

HwapreneTM SIS is styrene-isoprene-styrene block copolymer in white porous pellet form. It is derived from anionic polymerization of styrene and isoprene. It is non-toxic thermoplastic elastomer, and is characterized by its high elasticity, good melting flowability, good compatibility with tackifiers and safety.

Typical items & technical data


Items

SIS 1015

SIS 1030

SIS 1116

SIS 1214

SIS 1516

SIS 1615

SIS 4319

Structure

Linear

Linear

Linear

Linear

Linear

Linear

Radial

Styrene content, %, by weight

15.0 ± 2.0

30.0 ± 2.0

16.0 ± 2.0

14.0 ± 2.0

16.0 ± 2.0

15.0 ± 2.0

19.0 ± 2.0

Diblock content, %, by weight

-

-

16.5 ± 2.0

25.0 ± 2.0

50.0 ± 3.0

60.0 ± 3.0

30.0 ± 3.0

Melting flow rate, g/10min, 200/5kgs

8.0 - 12.0

8.0 - 14.0

8.0 - 14.0

8.0 - 14.0

8.0 - 14.0

4.0 - 10.0

10.0 - 18.0

25% toluene solution viscosity, mPa·s

2500

1600

2000

1300

1000

1000

500

Tensile strength, MPa

12.0

20.0

10.0

8.0

4.0

3.0

6.0

Stress at 300%, MPa

0.5

0.7

0.5

0.5

0.3

0.2

0.5

Elongation at break, %

1050

900

1050

1000

1100

1000

900

Hardness, Shore A

40 ± 5

65 ± 5

40 ± 5

30 ± 5

30 ± 5

20 ± 5

45 ± 5

Volatiles content, %, by weight

0.70

Ash content, %, by weight

0.20

Yellow index

6.0