Abstract: 6-chromanol derivatives are used as antioxidants in polyethers. These, particularly in conjunction with other antioxidants, provide excellent protection against oxidation at very low levels of use. They are particularly useful in polyethers for preparing polyurethane slabstock foam.

Abstract: 6-chromanol derivatives are used as antioxidants in polyethers. These, particularly in conjunction with other antioxidants, provide excellent protection against oxidation at very low levels of use. They are particularly useful in polyethers for preparing polyurethane slabstock foam.

Abstract: Flexible foam is prepared using 1,1,1-trichloroethane as the sole or predominant auxiliary blowing agent.

Abstract: Vinyl urethane composite polymers having improved impact strength are prepared by reacting a polymer polyahl containing dispersed soft polymer particles, a polyisocyanate and a vinyl monomer.

Abstract: Fluid compositions containing a polyether polyol having an equivalent weight below about 250, a polyisocyanate, a solid modifier compound having a surface area less than 0.2 m.sup.2 /gram and a particle size of less than 1/4 inch in the minimum dimension and a non-amine containing catalyst rapidly solidifies into a solid, dense polyurethane free of bubbles, distortions and fissures.

Abstract: Polyurethane and vinyl polymer composites are rapidly prepared without the requirement of the application of an external source of heat by the admixture of a composition comprising(A) a polyether polyol having an equivalent weight of 30-250, such as an adduct of glycerine with propylene oxide;(B) an organic polyisocyanate, such as toluene diisocyanate;(C) an ethylenically unsaturated monomer, such as styrene;(D) a catalyst for polymerizing ethylenically unsaturated monomers such as tertiary butyl perbenzoate; and(E) a catalyst for urethane formation such as lead octoate.Foams may also be prepared by adding an appropriate foaming agent.

Abstract: Mixtures comprising a low molecular weight polyol having a functionality of from 3 to about 8, a liquid modifier compound having a boiling point above 150.degree. C, such as a fatty acid or fatty oil, a polyisocyanate and a non-amine-containing catalyst, instantly set, after a brief induction period, to a solid, dense, non-elastomeric polymeric product which can be demolded within a period of from less than about 1 minute to about 5 minutes.

Abstract: Mixtures comprising a low molecular weight polyol having a functionality of from 3 to about 8, a liquid modifier compound having a boiling point above 150.degree.C, such as an estermodified polyoxyalkylene compound having an average molecular weight above about 700, a polyisocyanate and a non-amine-containing catalyst, instantly set, after a brief induction period, to a solid, dense, non-elastomeric polymeric product which can be demolded within a period of from less than about 1 minute to about 5 minutes.

Abstract: Mixtures comprising a low molecular weight polyol having a functionality of from 3 to about 8, a liquid modifier compound having a boiling point above 150.degree.C, such as an ester-modified polyoxyalkylene compound having an average molecular weight above about 700, a polyisocyanate and a non-amine-containing catalyst, instantly set, after a brief induction period, to a solid, dense, non-elastomeric polymeric product which can be demolded within a period of from less than about 1 minute to about 5 minutes.