Abstract: A method for gelling relatively high molecular weight polyoxyalkylene-containing materials having a block of at least about 10 weight percent of oxyethylene units by blending therewith a sufficient quantity of a relatively low molecular weight material having at least two hydroxyl groups per molecule containing urea dissolved therein.

Abstract: Compositions containing a relatively high molecular weight polyol and ethylene glycol which compositions are incompatible, i.e. separate into two distinct phases upon storage, are compatibilized by the admixture therewith of urea or a substituted urea.

Abstract: Incompatible compositions containing a relatively high molecular weight polyol containing terminal primary amine groups and a relatively low molecular weight polyol containing primary hydroxyl groups are rendered compatible by the addition thereto of a substituted urea such as dimethyl urea.

Abstract: The invention describes an improved process for preparing polyols by reacting a mono-epoxy compound such as propylene oxide with a hydroxyl-containing initiator compound such as glycerine in the presence of a catalyst, the improvement being that the catalyst is added in the form of a calcium, strontium or barium salt of an organic acid such as acetic acid.Polyols prepared by this process can be employed to prepare polyurethanes without removing the catalyst.

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/vinyl polymer composites are 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 30-2500, 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 cobalt naphthenate.Foams may also be prepared by adding an appropriate foaming agent.

Abstract: Rapid-setting polyurethanes are prepared employing as the modifier component therein a cyclic unsaturated aliphatic hydrocarbon having an atmospheric boiling point above about 140.degree. C such as dicyclopentadiene.

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: Rapid-setting polyurethanes are prepared employing a mixture consisting of an aliphatic monomeric triol and derivatives of propylene glycol having an equivalent weight of less than about 230 as the polyol component therein.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a non-hydroxyl-containing polyoxy-alkylene compound.

Abstract: Mixtures comprising a low molecular weight diol, a liquid modifier compound having a boiling point above about 150.degree. C, such as a fatty acid or fatty oil, a polyisocyanate having a functionality of at least about 2.5 and an organotin catalyst instantly set, after a brief induction period, to a solid, dense, rigid polymeric product which can be demolded within a period of from less than 1 minute to about 5 minutes.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as triethyl phosphate.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a cyclic sulfone.

Abstract: A process is described for preparing rapid-setting polyurethanes which comprises admixing in the absence of a catalyst a liquid polyol component with a liquid polyisocyanate component wherein the temperature of said components prior to mixing is such that the resultant mixture has a temperature of at least 50.degree. C and will result in a peak exotherm temperature of at least 85.degree. C.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compounds having a boiling point above about 150.degree. C such as a mixture of 1-chloronaphthalene, butyl oleate and 3-methylsulfolane.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a cyclic ether.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a glycerine initiated polyoxyalkyleane compound.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a chlorinated aliphatic compound.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as a polyoxyalkylene polyol relatively high in molecular weight or capped derivatives thereof.

Abstract: Compositions which will rapidly set to produce solid, rigid polyurethanes without the use of a catalyst comprise an amine initiated polyether polyol such as triethanol amine, an organic aromatic polyisocyanate, such as toluene diisocyanate and a liquid modifier compound having a boiling point above about 150.degree. C such as an organic carbonate.