| 摘要 |
The alkylation resins of this invention comprise the alkylation reaction product of (a) at least one substituted or unsubstituted polycyclic aromatic compound and (b) at least one ethylenically unsaturated hydrocarbon monomer having at least two carbon-carbon double bonds that reacts with the polycyclic aromatic compound by alkylation in the presence of an acid catalyst, wherein the ratio of (a) to (b) in the resin is 1:9 to 3:1 by weight. The resins have a weight average molecular weight of less than 10,000 measured by size exclusion chromatography, and a Ring /A Ball softening point of 50.degree. to 250.degree.C. Because of their high softening point and low molecular weight, the resins are useful in a variety of applications such as flow rate modifiers for engineering polymers, tackifiers for adhesives, and flushing agents for inks.
|
