Abstract: A method for repairing plastics, metal and the like. The method uses a compound comprising a thermosetting unsaturated polyester resin, a thermoplastic resin mixed with said polyester, particulate inorganic filler, as well as additional metallic particulate material, fibrous materials and a catalyst. The compound when cured at a relatively elevated temperature of about 325.degree.-350.degree. F. provides a low shrink material which can be painted and baked on normal processing lines up to 350.degree. F. without separating from the underlying substrate.

Abstract: Improved surface characteristics of sheet molding compounds are obtained by employing defined amounts of resin, glass and filler in the formulation comprising the appearance side and the reinforcing side of molded objects.

Abstract: A filled resin composition having thixotropic properties is prepared by blending (a) a liquid polyester resin, and (b) a solid filler (such as calcium carbonate), which has been treated with an effective amount of a polymer prepared from (1) an addition polymerizable organic monomer which does not contain an acid group and (2) an addition polymerizable acid. The preferred polymer is ethylene/acrylic acid.

Abstract: A coating composition comprising (A) a polyester resin modified with a lactone having 6 to 8 ring carbon atoms (I) or a mixture of said lactone-modified polyester resin (I) and a non-modified polyester resin (II), the lactone content being from 5 to 40% by weight of the total polyester resin (in solid) (I) or (I+II), the number average molecular weight being 800.about.200 mg KOH/g and wherein the resinous acid value is 2.about.20 mg KOH/g, (B) a crosslinking agent, (C) a pigment and (D) optionally other resins. The composition is useful as an intercoat paint for automobile bodies.

Abstract: Thermoplastic compositions comprising, in intimate admixture, polyethylene terephthalate, a rubber-free copolymer of or a rubber-modified graft copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, a fibrous modifier, and a nucleating agent are disclosed. These compositions display desirable properties, particularly elevated heat deflection temperatures and good surface appearance.Also disclosed is a process for producing articles by injection molding the compositions at a hold pressure of about 5,000 to about 10,000 psi.

Abstract: A pretreatment process to remove entrapped air from liquid polyester blends intended as the matrix of cast marble is disclosed. The formulated blend is subjected to a simultaneous evacuating, vibrating and shearing step which is critical within broad parameters. The thus treated blend, after casting, will be non-porous in cross section, thereby making it suitable for countertops and other parts which must be field cut to specifications.

Abstract: A thermosetting molding composition containing unsaturated polyester and carboxy-containing rubber exhibit improved surface gloss of molded articles when the composition further contains an unsaturated ester/potassium salt of phosphoric acid, such as potassium oleyl phosphate.

Abstract: A thermosettable composition suitable for preparing reinforced plastic articles is prepared by combining an unsaturated polyester, a rubber, a vinyl monomer, a catalyst and a calcium carbonate filler coated with a fatty acid or fatty acid metal salt. The resulting compositions when cured exhibits high impact strength.

Abstract: Anilines substituted in the m- and p-position by an alkyl radical and a halogen atom are eminently suitable for use as accelerators for cold-hardening unsaturated polyester resins.

Abstract: A low shrink unsaturated polyester based upon propylene glycol terephthalate reacted with a dibasic acid or anhydrides thereof and glycols and mixing the polyester with a filler, fibrous reinforcing agent and catalyst.

Abstract: The invention relates to molding compounds modified with a high 1,2 unsaturated carboxylated styrene-butadiene block polymer and a saturated styrene-alpha-olefin block polymer, said molding compounds containing an unsaturated crosslinkable resin, ethylenically unsaturated monomer, filler, reinforcing agent, catalyst, and thickener.

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: Polyester and hardener compositions have incorporated therein pigments of Toluidine Red Y and Parachlor R to enable the user to determine when mixing is uniform and when the cure has been completed.

Abstract: A resin molded stator comprising a stator core and coils as major constituents at least parts of which are molded into one piece by a molding material, said molding material comprising (a) a low-shrink unsaturated polyester resin, (b) a filler having a particle size of 44 .mu. or less, and (c) a fibrous material having a length of 3 mm or less, in proportions of 15 to 40% by weight of the component (a) and 60 to 85% by weight of a total of the components (b) and (c), and a weight ratio of the component (b) to the component (c) being 3/1 to 30/1, is excellent in crack resistance, moisture resistance and insulating properties.

Abstract: Improved polymer bonded concrete is disclosed wherein the amount of polymer binder used may be reduced to amounts as low as 3 to 10% by weight of the concrete. The concrete has however high strength and other improved properties such as high modulus of elasticity, low thermal expansion and contraction, better fire resistance, low shrinkage on curing and the like and also very importantly, the cost is reduced. Preparation of the concrete is disclosed using an in situ polymerization process together with intense vibration of the monomer component-solids mix.

Abstract: Unsaturated polyester resin compositions that have a low shrinking property, and at the same time, an enough strength are provided. The compositions comprises (1) 30-70 parts by weight of an unsaturated polyester obtained by reacting terephthalic acid and/or isophthalic acid and one or more of unsaturated acids selected from the group consisting of maleic anhydride, maleic acid and fumaric acid, with a glycol, and having the unsaturation degree of 1.5-5.0 and the acid value of 18-40, (2) 70-30 parts by weight of .alpha.,.beta.-ethylenically unsaturated monomer, and (3) 5-30 parts by weight of a thermoplastic resin having the number average molecular weight of 5,000-500,000.

Abstract: A thermosettable composition suitable for preparing reinforced plastic articles is prepared by combining an unsaturated polyester, a normally solid carboxy-containing polymer of a conjugated diene, a vinyl monomer, a catalyst and a reinforcing agent or filler. Preferably the composition is prepared utilizing a mixer giving moderate shear such as a twin-rotor mixer. The resulting composition when cured exhibits high impact strength and good surface finish.

Abstract: Terminally unsaturated liquid epihalohydrin polymers are produced by polymerizing at least one epihalohydrin using acrylic acid or methacrylic acid as a modifier. The polymerization is conducted in the presence of a catalytic amount of a trialkyl oxonium salt of an HMF.sub.6 acid wherein M is an element selected from the group consisting of phosphorus, arsenic and antimony. The polymers are useful as tougheners for unsaturated polyester resin systems.