Characterization of Powdered Polyurethane Foam and Solvolysis Products
Partial Solvolysis of PUR Foam and Viscosity of Coating Compositions
The effect of ultrasound on the solvolysis
of 2-chloro-2-methylpropane in aqueous ethanol.
Our work was directed to a modified solvolysis procedure which enables us to produce new polyols from polyurethane soft foams which, according to the aim mentioned above, can be processed to high-grade polyurethanes, especially coatings, adhesives and sealants as well as composites, by formulation with polyisocyanates.
This aim shall be approached by a modified solvolysis consisting in the
In particular, solvolysis
namely "controlled depolymerization by action of a reactive solvent" make it possible to return to the starting monomers or oligomers, by hydrolysis, glycolysis, or methanolysis.
First-order nucleophilic substitution at nonaromatic centres, solvolysis
and metabolic degradation by rat liver of the ultimate carcinogen, N-sulfonory-2-acetylaminofluorene.
VI: bioanalysis, kinetics, solvolysis
kinetics, solubility, pKa values, and protein binding of buprenorphine.
As with many sonochemical studies the effect of irradiation in this solvolysis decreases as the reaction temperature is increased.
A Homogeneous reaction: the rate of solvolysis of 2-chloro-2-methylpropane in aqueous ethanol This is based upon a standard undergraduate experiment in which the first order hydrolysis of a haloalkane is followed by monitoring the change in conductivity of the solution as HC1 is liberated (see Scheme 2).
Hydrolysis is defined as the reaction with water.