Abstract:
This application relates to a novel process for producing imidoisocyanates by reacting an anhydride of a polycarboxylic acid and an aromatic polyisocyanate in the presence of a catalyst combination consisting of a certain phosphorus or boron compound and a dialkyl sulfoxide. In a preferred embodiment of this invention (when the anhydride is a halogenated anhydride), the imido isocyanates are novel compositions of matter which are useful as components of polyurethane-forming formulations that can be cured by conventional amine and tin catalysts to produce flame-resistant polyurethane foams.
Abstract:
A catalytic process for producing isocyanurate compounds from isocyanates is disclosed. The catalyst is N-(2-hydroxyethyl)ethyleneimine. The isocyanate can be a monoisocyanate, a polyisocyanate or a polymeric isocyanate. The isocyanurates are known compounds having known uses. The foamed isocyanurate polymers have the same utilities known for the foamed urethane polymers.
Abstract:
This invention relates to the use of phenolaldehyde-amine resin/diol curatives in the production of cellular polyurethane elastomers having outstanding energy absorbing properties. The elastomers are useful as energy managing components in automobiles and the like.
Abstract:
A process is disclosed for the aldol condensation of enolizable aldehydes to alpha, beta-unsaturated aldehydes, at high selectivities, employing a metal carboxylate catalyst. The process uses a catalyst that is a metal carboxylate wherein the metal is selected from the group consisting of magnesium, copper, zinc and the transition elements of Groups IV, V, VI, VII and VIII.
Abstract:
This invention relates to the use of methyl formate as an adjuvant in the formation of phenolic foam. The addition of methyl formate to phenol-aldehyde resoles caused a substantial reduction in resole viscosity and thus allows for the processing of resoles which are otherwise too viscous to be foamed. A further advantage of methyl formate as an adjuvant in the formation of phenolic foam is that it also functions as a blowing agent. In its use as a blowing agent, methyl formate is employed in combination with 1,1,2-trichloro-1,2,2-trifluoroethane. Depending upon the nature of the phenolic foaming resin, the use of methyl formate in combination with 1,1,2-trichloro-1,2,2-trifluoroethane as the source of blowing action further provides the advantageous result of allowing for the formation of a phenolic foam of reduced friability.
Abstract:
PROCESS FOR PRODUCING MIXTURES OF KETONES AND ALDEHYDES of the Invention A hydrocarbonylation process for producing an aldehyde or a mixture of a ketone and an aldehyde which comprises: (I) forming a reaction mixture comprising: (a) a catalytic amount of a complex catalyst consisting essentially of rhodium in complex combination with: (i) a triorganophosphine, and (ii) a carboxylic acid having a phenyl group substituted at the para position with a non-reactive electron-withdrawing group, said phenyl group being free of further substitution amd said electron withdrawing group being substantially non-reactive in said process; (b) an alpha-olefin having 2 to 5 carbon atoms, (c) carbon monixide, and (d) hydrogen with the proviso that the reaction mixture has mole ratio of said carboxylic acid to rhodium of at least about 2; and (II) maintaining the reaction mixture at a temperature and pressure at which said (b), (c) and (d) react to form an aldehyde or a mixture of an aldehyde and a ketone.
Abstract:
LOW COLOR ISOPHORONE Crude isophorone is refined by contacting it with aqueous caustic followed by washing and fractional distillation. This procedure provides an efficient method of treating crude isophorone to produce low-colored, refined product without a neutralization step or corrosion of the processing equipment. The preferred caustic employed in this procedure is sodium hydroxide.