Abstract: Unsaturated polyester resins containing--as additive--polyesterurethanes having free carboxyl groups and/or terminal radically polymerizable double bonds are good starting materials for manufacturing moulded articles with outstanding properties, particularly with an excellent impact strength.

Abstract: Molding compositions comprising terminally unsaturated polyesters, vinyl or vinylidene compounds copolymerizable therewith and elastomeric polymers have an excellent impact strength and a good heat distortion temperature, strength and rigidity.

Abstract: Molding compositions comprising a "terminally unsaturated"polyurethane, a copolymerizable vinyl or vinylidene compound and a rubbery-elastic polymer having a glass transition temperature of between -90.degree. and +10.degree. C. can be used for the preparation of molded articles having a considerably increased impact strength and a good heat distortion temperature, strength and rigidity.

Abstract: .alpha.,.beta.-Ethylenically unsaturated polyesters obtained from dicarboxylic acids and monohydric and dihydric alcohols having acid numbers of 1-50 and hydroxyl numbers of 10-80, 1,5-2,5 mols of dicarboxylic acids and 1,5-2,5 mols of monohydric alcohols having been employed, per mol of diols, in their preparation, are an excellent basis for dispersions containing powdery insoluble substances.

Abstract: Organic dispersions which can be cured with little shrinkage and are based on unsaturated polyester, copolymerizable vinyl or vinilydene compounds, thermoplastic polymers which are colloidally soluble and are incompatible with the polyester resin and an ethylene/vinyl acetate copolymer with high vinyl acetate contents show a good stability.

Abstract: Unsaturated polyester moulding compositions hardenable with low shrinkage which are free-flowing comprise a crystalline unsaturated polyester, a copolymerizable vinyl monomer and a graft-polymerized butadiene polymer.

Abstract: Dispersions suitable for the manufacture of moulding compositions which can be cured with low shrinkage to give mouldings with excellent surfaces can be obtained by the addition of finely divided ethylene copolymers manufactured in aqueous emulsion to unsaturated polyester resins.

Abstract: A composition comprisingA. 24-70% by weight of an unsaturated crystalline polyester which is the condensation product of fumaric acid and a glycol of the formulaHO--CH.sub.2 --R--CH.sub.2 --OHwherein R is of the formula (CH.sub.2).sub.z wherein z is 1 to 18 or a symmetrical dialkyl derivative of (CH.sub.2).sub.z wherein the alkyl substituents are situated on the same carbon atom or cycloalkylene,B. 20-70% by weight of styrene andC. 1-30% by weight of at least one member selected from the group consisting of a polycarbonate, polyamide, polyvinyl alcohol, polyvinyl alcohol acetal, polyvinylchloride, cellulose ester of at least one organic acid and polyethylene. Said mixture may additionally contain one or more fibrous reinforcing agents and one or more fillers.

Abstract: Pourable and pumpable, storage-stable organic dispersions which can be cured with little shrinkage comprising unsaturated polyesters, copolymerizable vinyl monomers, ethylene vinyl ester copolymers and optionally dispersing agents.

Abstract: Polyester masses which are curable with low shrinkage containing non-crystallising unsaturated polyesters having a definite styrene compatibility, copolymerisable vinyl monomers and cellulose acetobutyrate and/or cellulose acetopropionate.