| 摘要 |
<p>A resinous product is produced by introducing from 0.8 to 10 molar proportions of 1,3-butadiene or a homologue thereof substituted in the 2-position with an n-alkyl radical containing up to 3 carbon atoms, into a suspension of one molar proportion of a urea containing at least one NH2 group attached directly to carbonyl and from 0.75 to 3.0 molar proportions of sulphuric acid containing from 85 to 105% by weight of equivalent H2SO4 in an inert organic diluent with continuous agitation at from - 10 DEG to 70 DEG C. Part of the diolefin may be replaced by an unhindered tertiary monoolefin, or by a conjugated diene other than the above diolefin. The reaction may take place continuously and the products contain in general 2 to 50 molar proportions diolefin, 0.1 to 1.5 sulphate radicals and one molar proportion urea. Products comprise sulphated polymers of urea, isobutylene and butadiene of urea, butadiene and isoprene of urea and butadiene and of urea and isoprene.</p> |
