Page 88 - Handbook of Surface Improvement and Modification

6.2 Additives used 83

6.2 ADDITIVES USED

Aromatic copolymers and polymers

GENERAL INFORMATION
Name: aromatic copolymers & polymers
Weight average molecular mass: 940-1170
Product composition: 100% benzene, ethenyl-, polymer with (1-methylethenyl)benzene; phenol-
modified copolymer of styrene and α-methyl styrene;
PHYSICAL PROPERTIES
State: solid Odor: mild Color: colorless, water white
3
Color, Gardner scale: 24-26 (1:1 toluene) Density, kg/m : 1059
o
o
T , C: 31-87 Softening, C: 75-137
g
o
Viscosity at 125 C, mPas: 1069-2199 Vapor pressure, kPa: <0.00013
o
Volatility, %: 0.71 (24H at 180 C)
HEALTH & SAFETY
o
Flash point, C: 232
Carcinogenic: NTP, IARC, OSHA, ACGIH: No component of this product present at levels
greater than or equal to 0.1% is identified as a known or anticipated carcinogen.
USE & PERFORMANCE
Outstanding properties: Superior oxidative stability. Improved strength and water resistance. The
low T improved elasticity at low temperature. Improved compatibility with high polarity poly-
g
mers. Contains small amount of phenol modification
Recommended for polymers: EVAs blended with other rosin esters, styrene phase of SBCs, paraf-
fin, microcrystalline, FT and PE wax, SIS, SBS
Recommended for products: adhesives for packaging, bookbinding, PSAs for tapes and labels,
nonwoven, woodworking