Abstract: The foaming of resinous insulating materials under vacuum is substantially reduced by adding to the material a polydiene having primarily vinyl unsaturation.

Abstract: Graft copolymers are prepared by the polymerization of an ethylenically unsaturated monomer, or a mixture of such monomers, in the presence of an azo di-ester polyol. Presence of the azo group in the polyol reactant itself serves as a free radical initiator site for the graft copolymerization reaction. The copolymers formed are utilized in the formulation of polyurethane compositions.

Abstract: A process for the production of a final curable resin comprising the steps of reacting a cyclopentadiene type compound with a compound having a double bond and hydroxyl group in the molecule to obtain a hydroxyl group-containing resin, reacting the thus obtained resinous polyol and at least one other polyol with a polybasic acid to obtain a hydroxyl group-containing alkyd resin and then esterifying the alkyd resin with an .alpha.,.beta.-unsaturated carboxylic acid thereby obtain the final curable resin. In one embodiment, this invention relates to said final curable resins and also to curable coating compositions containing same.

Abstract: An unsaturated polyester composition for molding compounds, consisting essentially of (1) 20 to 70 parts by weight of an unsaturated polyester obtained by condensing an acid component comprising a major amount of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid with a polyol, (2) 25 to 75 parts by weight of a vinyl monomer copolymerizable with said unsaturated polyester, (3) 1 to 25 parts by weight of a thermoplastic polymer, and (4) at least one member selected from the group consisting of hydroxyl-containing vinyl monomers and epoxy-containing vinyl monomers in a ratio of 1 to 40 parts by weight to 100 parts by weight of said unsaturated polyester (to form 100 parts by weight of the composition). The composition may be molded and cured to yield articles which provide good adhesion to surface coatings and are susceptible of decorative finishes.

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: A resin composition comprising (A) 25 to 45 parts by weight of an unsaturated polyester having special structure, (B) 40 to 60 parts by weight of polymerizable monomer such as styrene, and (C) 4.5 to 15 parts by weight of a polystyrene, has low shrink properties and excellent electrical properties when molded, particularly by casting.

Abstract: A resin composition which comprises (A) 50 to 90 parts by weight of an unsaturated ester oligomer produced by reacting a glycol, hydroxylated dicyclopentadiene, and at least one unsaturated dibasic acid or anhydride thereof until an acid value of less than 40, (B) 50 to 10 parts by weight of one or more polymerizable monomers, and (C) 3 to 15 parts by weight of polystyrene based on 100 parts by weight of the total of the components (A) and (B), can give molded articles having low shrink properties and improved color shading, cracks, etc.

Abstract: Thermoplastic moulding compounds of1. 10-95% by weight of an aromatic polycarbonate in which at least 50% of the linear chains comprise recurrent structural units of the formula ##STR1## in which R represents C.sub.1 -C.sub.3 alkyl and X represents a single bond, --O--, --CO--, --SO.sub.2 --, C.sub.1 -C.sub.10 alkylene, C.sub.1 -C.sub.10 alkylidene, C.sub.5 -C.sub.15 cycloalkylene, C.sub.5 -C.sub.15 cycloalkylidene or ##STR2## 2. 5-90% by weight of a thermoplastic resin and/or 3. 5-90% BY WEIGHT OF RUBBER WHICH MAY BE MODIFIED.

Abstract: Filled unsaturated ester bulk molding, sheet molding, premix or mat molding compositions are modified with elastomer to give finished products with both improved impact strength and improved surface characteristics. The elastomeric modifier is selected from the group consisting of chloroprene polymers and hydrocarbon polymers such as ethylene/propylene di-, ter-, or tetrapolymers.

Abstract: Reinforced molding compounds are disclosed comprising elastomer modified thermosetting unsaturated polyesters which include conjugated diene butyl rubber elastomer copolymer dispersed therein, and which further include inorganic particulate filler material and a free radical polymerizable monomer. Preferably, they also include a thermoplastic component, and such compounds have improved surface appearance, toughness and impact strength as demonstrated by the molded articles produced from such a low profile system.

Abstract: Methods for preparing reinforced molding compounds are disclosed, comprising preparing a first paste component from a mixture of a thermosetting unsaturated polyester component, a free radical polymerizable monomer component and an inorganic particulate filler component, preparing a second paste component from a conjugated diene butyl elastomer copolymer component, a free radical polymerizable monomer component, and an inorganic particulate filler component, and combining the first and second paste components in order to produce an elastomer modified thermosetting unsaturated polyester molding compound having improved surface appearance, toughness and impact strength. Preferably, one or both of the paste components will include a thermoplastic polymer additive component to provide low profile qualities to the product.