Reaction Steps
Specific examples of the polyisocyanates include isocyanates, such as ethane diisocyanate, butane diisocyanate, hexane diisocyanate, 2,2-dimethylpentane diisocyanate, 2,2,4-trimethylpentane diisocyanate, decane diisocyanate, ω,ω'-diisocyanate-1,3-dimethylbenzoyl, ω,ω'-diisocyanate-1,2-dimethylcyclohexane diisocyanate, ω,ω'-diisocyanate-1,4-diethylbenzoyl, ω,ω'-diisocyanate-1,5-dimethylnaphthalene, ω,ω'-diisocyanate-n-propylbiphenyl, 1,3-phenylene diisocyanate, 1-methylbenzoyl-2,4-diisocyanate, 1,3-dimethylbenzol-2,6-diisocyanate, naphthalene-1,4-diisocyanate, 1,1'-dinaphthyl-2,2'-diisocyanate, biphenyl-2,4'-diisocyanate, 3,3'-dimethylbiphenyl-4,4'-diisocyanate, diphenylmethane-4,4'-diisocyanate, 2,2'-dimethyldiphenylmethane-4,4'-diisocyanate, 3,3'-dimethoxydiphenylmethane-4,4'-diisocyanate, 4,4'-diethoxydiphenylmethane-4,4'-diisocyanate, 1-methylbenzol-2,4,6-triisocyanate, 1,3,5-trimethylbenzol-2,4,6-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, triphenylmethane-4,4',4"-triisocyanate, tolylene diisocyanate, 1,5-naphthylene diisocyanate, etc.; dimers or trimers (adducts) of these isocyanates; and adducts of these isocyanates with di- or trihydric alcohols. The adducts of the isocyanates include an adduct of tolylene diisocyanate with trimethylolpropane, an adduct of 3 mols of tolylene diisocyanate, an adduct of 3 mols of hexamethylene diisocyanate, an adduct of 2 mols of hexamethylene diisocyanate, and adducts formed among the above-recited isocyanates.
