Abstract: A molding composition comprises a) an unsaturated polyester resin, b) a copolymerizable olefinically unsaturated monomer, c) a pigment, d) fiber reinforcement and e) a poly(vinyl ether) polymer with a weight average molecular weight of at least 50,000 to control shrinkage and promote the uniform distribution of the pigment in the molding composition.

Abstract: Polyurethanes having utility, for example, as low profile additives, in polyester-based molding compositions, a method of preparing polyester-based molding compositions containing such polyurethane low profile additives and thermoset articles made with the method are disclosed. The disclosed polyurethane low profile additives can enhance the pigmentability of molded articles comprising the low profile additives. The low profile additives comprise the reaction product of a hydroxyl-terminated prepolymer and an anhydride such as a dicarboxylic acid anhydride, preferably reacted in the presence of a catalyst comprising an amine having from about 4 to 20 carbon atoms.

Abstract: Unsaturated polyester fiber reinforced molding compounds containing low profile additives achieve moldings with improved shrinkage control, improved surface appearance, less separation and lower coefficient of thermal expansion by the addition of lactams.

Abstract: A molding additive composition comprising a mixture of low profile additive and a surfactant additive containing a silicon-oxyalkylene copolymer flow control agent and surface modifying agent; and a molding composition comprising a polyester molding resin, a low profile additive, a silicon-oxyalkylene copolymer flow control agent and surface modifying agent and a crosslinking monomer. In another embodiment, the invention embraces a molding composition comprising a polyester molding resin, a crosslinking monomer, a low profile additive, a reinforcing fiber, and a silicon-oxyalkylene copolymer flow control agent and surface modifying agent.

Abstract: A molding composition is provided which, through the use of a lactone monomer, improves the surface characteristics of the molded composite. In particular, the use of .epsilon.-caprolactone (oxepane-2-one) provides a smoother surface and enhanced dimensional stability.

Abstract: Articles manufactured by bonding two or more shaped fiber reinforced polymeric substrates together can be made by an improved process comprising:applying a self-crosslinking acrylic polymer latex primer to the bonding surface of each of said substrates and allowing said primer to dry,applying an epoxy adhesive, in an amount sufficient to effect adhesion, to the bonding surfaces thus primed, andcontacting the bonding surfaces thus primed and epoxied with one another, under conditions sufficient to cure the epoxy, to achieve bonding.

Abstract: The addition of cross-linkable vinyl monomers and epoxy compounds to low shrinking polyester molding compositions containing unsaturated polyesters results in moldings with improved surface characteristics.

Abstract: There is disclosed thickened, low shrinkage polyester molding compositions having improved pigmentation. The improved pigmentation in thickenable polyester molding compositions containing a carboxylated vinyl ester polymer low profile additive is achieved either by incorporating a surfactant in the composition, by using as the low profile additive a vinyl acetate/maleic acid copolymer, or by a combination of the two methods.

Abstract: Polyester fiber reinforced molding compounds containing low profile additives afford moldings with improved surface appearance by the addition of epoxy compounds essentially free of reactive unsaturation.

Abstract: There is disclosed thickened, low shrinkage polyester molding compositions having improved pigmentation. The improved pigmentation in thickenable polyester molding compositions is achieved by using as the low profile additive a vinyl acetate/maleic acid copolymer, and optionally incorporating a surfactant in the composition.

Abstract: The addition of a select group of crosslinkable vinyl monomers to low shrinking polyester molding compositions containing unsaturated polyesters results in moldings with improved surface characteristics.

Abstract: Glass-reinforced polyester molding compositions when mixed with lactone polymers and vinyl chloride polymers as additives afford molding compounds with greater shrinkage control and molded parts with smoother surfaces.

Abstract: The present invention provides particular phenol/formaldehyde resoles which are especially useful as foamable resins, and further provides cellular phenolic products having physical properties which are especially attractive for end-use application as construction foam. The resoles are characterized by a particular relationship between their viscosity and water content, expressed as the area bounded by certain points on a plot of resole viscosity on a logarithmic scale, as a function of water content of the resole, the particular area depending upon the mole ratio of formaldehyde-to-phenol at which the resole has been condensed. It has been found that phenol-formaldehyde resoles having the defined viscosity/water relationship are capable of providing phenolic foam having acceptable foam processability, a foam density from about 1.90 to about 3.

Abstract: The present invention provides particular phenol/formaldehyde resoles which are especially useful as foamable resins, and further provides cellular phenolic products having physical properties which are especially attractive for end-use application as construction foam. The resoles are characterized by a particular relationship between their viscosity and water content, expressed as the area bounded by certain points on a plot of resole viscosity on a logarithmic scale, as a function of water content of the resole, the particular area depending upon the mole ratio of formaldehyde-to-phenol at which the resole has been condensed. It has been found that phenol-formaldehyde resoles having the defined viscosity/water relationship are capable of providing phenolic foam having acceptable foam processability, a foam density from about 1.90 to about 3.

Abstract: There is disclosed thickened, low shrink curable molding compositions having reduced initial viscosity and the method of making the same. The low shrink, curable thermosetting compositions have a thermoplastic low profile additive and viscosity reducing agent incorporated therein, said thermoplastic low profile additive being a vinyl acetate polymer, a saturated polyester or mixtures thereof and said viscosity reducing agent being an aliphatic monocarboxylic acid having at least 6 carbon atoms in the chain.