C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/580
C08F 32/08 (2006.01)
Patent
CA 1237246
ABSTRACT A beta-pinene monomer is sequentially contacted with a catalytic amount of a halide-free organoaluminum compound in an inert solvent, which catalyst is hydrolyzed and activated by the addition of water, and subsequently adding an alkyl halide and recovering the resin. The hydrolyzed and activated organoaluminum compound is of the formula AlR3, wherein in R is hydrogen, oxyhydrocarbon or hydrocarbon radicals or mixtures thereof. A catalytic amount of the organoaluminum compound is formed in an inert solvent by the addition of about 0.5 mole to about 1.0 mole of water per mole of the organoaluminum compound in the solvent. A beta-pinene monomer is added to the hydrolyzed and activated organoaluminum compound in the solvent. Then an alkyl halide of the general formula R'X is added, wherein in R' is H or hydrocarbon radical and X is a halide radical at a temperature from about 20°C to about 70°C over a period of time sufficient to complete the addition of the alkyl halide and to form a reaction mixture containing the polymerized beta-pinene. The process provides water-white, hard beta-pinene resins which are useful in the manufacture of all types of adhesives, sealants and coatings as well as any other application where light colour resins are useful.
466895
Hercules Incorporated
Moffat & Co.
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