This invention relates to a process for separating one (or more) oligomeric
or polymeric compound(s) (A) obtained by polymerization of isocyanate
monomers (A.sub.1) or copolymerization of isocyanate monomers with another
polymerizable compound (A.sub.2), in particular a polyol, the said
compound(s) A having a viscosity (a), from the unconverted monomer(s),
this process comprising addition to the said compound(s) (A) of one (or
more) compound(s) (B) consisting of the product of polymerization of
isocyanate monomers (B.sub.1) or of copolymerization of isocyanate
monomers with another polymerizable compound (B.sub.2), in particular a
polyol, the said compound(s) (B) having a viscosity (b) and the ratio of
the viscosities b/a being less than 1/1.5, preferably less than 1/2, and
co-distillation of (A) and (B), in order to separate the compound(s) (A)
from the corresponding unconverted monomers.
Этот вымысел относит к процессу на отделять одно (или больше) олигомерное или полимерный compound(s) (A) полученный полимерностью мономеров изоцианата (A.sub.1) или copolymerization мономеров изоцианата с другой polymerizable смесью (A.sub.2), в частности полиол, сказанный compound(s) а имея выкостность (a), от unconverted monomer(s), это отростчатое состоя из добавление к сказанному compound(s) (A) одного (или больше) compound(s) (B) consist of продукт полимерности мономеров изоцианата (B.sub.1) или copolymerization мономеров изоцианата при другая polymerizable смесь (B.sub.2), в частности полиол, сказанный compound(s) (B) имея выкостность (b) и коэффициент выкостностей b/a чем 1/1.5, предпочтительн меньш чем 1/2, и чо-vygonka из (A) и (b), отделить compound(s) (A) от соответствовать unconverted мономеры.
