Page 82 - Handbook of Surface Improvement and Modification

6.1 Methods and mechanisms of tack enhancement 77

leum-derived C9-hydrocarbons. The
copolymer resins are cycloaliphatic aro-
matic hydrocarbon resins and maleic anhy-
dride-modified hydrocarbon resins are
useful in promoting pigment wetting.
Hydrogenated hydrocarbon resins are
produced using the controlled hydrogena-
tion of basic or pure monomer aromatic res-
ins. They are usually colorless and very
stable to heat, weathering, and oxidation.
The hydrocarbon resins are frequently
used as tackifiers in the pressure-sensitive
3
and hot-melt adhesives markets. The
amount of the hydrocarbon resin used in
these formulations sometimes equals to the
Figure 6.5. The effect of maleation on glass transition
3
temperature and melting point of aliphatic C5 hydrocar- weight of the base polymer. In tire indus-
bon resin. [Data from Kumar, KD; Tsou, AH; Bhow- try, 5-15 parts of hydrocarbon resin per 100
mick, AK, Int. J. Adh. Adh., 30, 200-7, 2010.]
parts of elastomer is typically used to

Figure 6.6. Chemical structures of tackifiers. [Adapted, by permission, from Sasaki, M; Fujita, K; Adachi, M;
Fujii, S; Nakamura, Y; Urahama, Y, Int. J. Adh. Adh., 28, 372-81, 2008.]