Abstract: An unsaturated polyester resin blend which includes at least one polyester resin containing a major amount of dodecanedioic acid and a second polyester resin which does not contain dodecanedioic acid. The polyester blend diluted with a cross-linkable vinyl monomer can be admixed with a thermoplastic low shrink additive, reinforcing fibers, inert filler, metal oxide or hydroxide, and a release agent to formulate sheet molding composition systems especially suitable for molding into exterior automotive parts exhibiting high levels of toughness combined with a Class A appearance.

Abstract: A curing agent for a water borne epoxy resin composition wherein the curing agent is the reaction product of a chemical excess of a polyfunctional epoxide compound and a quaternary ammonium salt in which substantially all of the excess epoxide groups in the reaction product are subsequently consumed in a reaction with a polyamine. A process for preparing the curing agent and a hardenable film forming coating composition containing as essential components, the curing agent, at least one water dispersible epoxy resin and water is also disclosed.

Abstract: A molded article such as a bathroom sink having improved thermal shock resistance is produced by molding the article from a composite unsaturated polyester resin in which the resin in the cured state has an HDT value in the range of about 68.degree. C.-78.degree. C.

Abstract: Chemically etching the surface of galvanized steel with a metal salt that is more electropositive than zinc provides improved adhesion for an unsaturated polyester resin based putty. The invention is particularly suitable for automobile body repair, and the putty can then be shaped to conform to the desired contour of the automobile body.

Abstract: An ethylenically unsaturated isocyanurate composition suitable for formulating SMC systems for the molding of structural automobile body parts requiring high levels of adhesion is prepared by blending the isocyanurate composition with a minor amount of a dicyclopentadiene terminated unsaturated polyester. These parts have excellent retention of physical properties when exposed to high temperature.

Abstract: An improved blister resistant paper coating polymer latex for paper coating comprising an aliphatic conjugated diene monomer, monoethylenic monomers and an ethylenically unsaturated carboxylic acid monomer and including a molecular weight modifier such as an organosulfur compound and a base.

Abstract: An aqueous dispersion of an anionic polyurethane, said polyurethane comprising a chain extended, aliphatic diisocyanatae containing, prepolymer; said prepolymer including carboxy groups neutralized with a tertiary amine composition comprising dimethylaminoethanol, said prepolymer being chain extended with a diamine comprising hydrazine.The invention also includes a film formed from the dispersion and a floor covering coated with such film. The film may be crosslinked with an agent such as melamine-formaldehyde resin.

Abstract: A monofunctional alcohol or acid is used to chain stop a condensation reaction for preparing a low molecular weight unsaturated polyester resin. The monofunctional acid removes terminal hydroxy groups and replaces them with hydrocarbon groups. The monofunctional alcohol removes terminal carboxy groups and replaces them with hydrocarbon groups. The resulting polyester resins having improved hydrolytic stability. These chain stopped unsaturated polyester resins can be further modified with hydroxy acrylates, other hydroxy terminated polyesters, and diisocyanates to produce resins with excellent water resistance and physical properties for various applications, such as marble/onyx resins, sheet molding compounds, bulk molding compounds and resin transfer molding resins, gel coats, and bowling ball resins.

Abstract: Saturated and ethylenically unsaturated compounds containing carboxylic, amino or alcohol groups are reacted under mild conditions and in short process times with polycarbodiimides containing free isocyanate units to provide polymers with excellent properties. The unsaturated groups bonded to the polymers are particularly important because these groups provide reactive centers that can be crosslinked, either thermally or in the presence of catalysts that initiate polymerization or by radiation. The polymers can also be crosslinked either alone or by copolymerization with various unsaturated monomers. The resulting crosslinked or cured resins provide excellent properties such as hardness, high elongation, excellent toughness, high heat distortion temperatures and good corrosion resistance.

Abstract: An anti-skid coating composition for coating various substrates including structural panel board surfaces, comprises a binder made of urea formaldehyde resin, polyvinyl acetate, ammonium chloride and a dispersant. The binder is used in conjunction with an aggregate, such as walnut shells. A method is also provided for coating the substrates to impart slip resistance thereto.

Abstract: A styrene-butadiene composition containing about 0.1 to 10 weight % of a monoester of maleic acid or fumaric acid provides improved bonding strength. In addition, small amounts of a functional monomer can also be included.

Abstract: A polymer latex for making gloves having excellent donning and doffing characteristics comprises a carboxylated open chain aliphatic diene/acrylonitrile/(meth)acrylate terpolymer. A process for making latex gloves using the polymer latex prepared in accordance with the invention is also disclosed.

Abstract: An improved blister resistant paper coating polymer latex comprising an aliphatic conjugated diene monomer, a monoolefinic monomer and an ethylenically unsaturated carboxylic acid monomer and including a molecular weight modifier such as an organosulfur compound and a soluble salt of a nonpolymerizable organic acid.

Abstract: A composition for reducing styrene monomer emissions in DCPD resins, while maintaining good interlaminate adhesion, comprising,(a) 0.001 to 1.0% by weight of a paraffin,(b) 0.001 to 3.0% by weight of an intermediate bonding promoter comprising the reaction product of(i) a saturated or unsaturated fatty acid containing 5 to 30, and preferably 10 to 20 carbon atoms,(ii) a mono- or diepoxy compound,(c) 0.0 to 10% by weight of alpha-methyl styrene, and(d) 0.0 to 1.0% by weight of a copper salt,wherein said composition results in styrene emission rates of 60 grams/square meter or less measured one hour after gelation, and retains at least 80% to 90% of the interlaminate adhesion properties of an unmodified resin.

Abstract: A flexible fibrous reinforced phenol-formaldehyde sheet molding compound capable of rapid curing to an infusible state.

Abstract: The present invention is based upon the discovery that a styrene-butadiene composition contatining about 0.1 to 10 weight % of a monoester of maleic acid or fumaric acid provides improved bonding strength. In addition, small amounts of a functional monomer can also be included.

Abstract: Unsaturated polyester compositions comprising (a) an unsaturated polyester prepolymer and (b) a vinyl monomer copolymerizable with the prepolymer, which are cured by addition of (c) a polyisocyanate, (d) a peroxide catalyst and, optionally, (e) a peroxide activator and a urethane catalyst.

Abstract: A method for coating a concrete substrate with a layer of ethylene-vinyl acetate copolymer latex, which forms a protective skin on the surface of the substrate.

Abstract: A chalk-adhesion polymer latex for exterior coatings especially suitable for blending with an acrylic formulation, such as vinyl acetate/ acrylic copolymers. The polymer is derived from a monomer precursor composition, including an acrylic moiety, such as an acrylate and a methacrylate, together with small amounts of a nitrogen-containing alkyl acrylate, an acrylamide and propylene glycol. The method of preparing the chalk adhesion polymer includes emulsification stages to accomplish the polymerization.

Abstract: An improved sizing composition resistant to hard water precipitation comprises a first component containing a reaction product of urea and an aminocarboxylic acid and a second component comprising a rosin. A process for preparing the improved sizing composition is also disclosed.