Abstract: The residual level of N-vinylcarbazole in polyvinylcarbazole has been reduced to an amount less than 25 ppm by treatment of a solution of the polyvinylcarbazole with a strong acid. The polymer can be recovered in pure form by precipitation of the polymer from solution with a non-solvent.

Abstract: Thermoplastic elastomers made by copolymerizing macromolecular monomers with alkoxyalkyl acrylates serve as binders for solid propellants which binders have high burn rates and increased insensitivity over conventional binders. The preferred alkoxyalkyl acrylate is methoxyethyl acrylate.

Abstract: Composition for preparing a polymer concrete, a method of protecting or reconditioning surfaces by treatment with the composition, the protected or reconditioned surfaces thus-treated, and multi-package systems for bringing the components of the composition to an application site, wherein the composition comprises a substantially non-aqueous slurry of (1) an aggregate material and (2) a monomer binder system effective to bind the aggregate, upon curing, into a polymer concrete, the binder system comprising (a) a liquid comonomer component, (b) a solid, thermoplastic macromonomer component dissolved in the comonomer and comprising a linear polymer terminated at one or both ends with a polymerizable end group, and (c) a polymerization catalyst.

Abstract: Radiation-curable low molecular weight partial ester copolymer compositions comprising products of a terminally ethylenically unsaturated compound and a maleic anhydride characterized by having free-anhydride functionality are provided. The partial esters are produced by esterification of certain copolymers with a hydroxyalkyl acrylyl compound, or an admixture thereof with a monohydric alcohol. The compositions of the invention are useful as radiation cross-linkable diluents for radiation-hardenable compositions, particularly in improving adhesion promotion and/or dispersive capabilities of binder resins.

Abstract: Radiation-curable low molecular weight partial ester copolymer compositions comprising products of a terminally ethylenically unsaturated compound and a maleic anhydride characterized by having free-anhydride functionality are provided. The partial esters are produced by esterification of certain copolymers under anhydrous conditions with a hydroxyalkyl acrylyl compound, or an admixture thereof with a monohydric alcohol. The compositions of the invention are useful as radiation cross-linkable diluents for radiation-hardenable compositions, particularly in improving adhesion promotion and/or dispersive capabilities of binder resins.

Abstract: Composition for preparing a polymer concrete, a method of protecting or reconditioning surfaces by treatment with the composition, the protected or reconditioned surfaces thus-treated, and multi-package systems for bringing the components of the composition to an application site, wherein the composition comprises a substantially non-aqueous slurry of (1) an aggregate material and (2) a monomer binder system effective to bind the aggregate, upon curing, into a polymer concrete, the binder system comprising (a) a liquid comonomer component, (b) a solid, thermoplastic macromonomer component dissolved in the comonomer and comprising a linear polymer terminated at one or both ends with a polymerizable end group, and (c) a polymerization catalyst.

Abstract: Improved Portland cement compositions are provided by the use of a combination of additives which increase plasticity and allow the use of less water. When the mixture is cured or set, the resultant concrete has higher compressive strength, higher flexural and shear strength, is believed to be markedly less susceptible to penetration by moisture or corrosive liquids, and have greater freeze-thaw stability. Such concrete is highly advantageous in thin paving sections such as bridge deck overlays, overpasses, elevated freeways and the like. The preferred additives are a latex of a styrene-butadiene containing polymer and a dispersing agent such as a polymerized naphthalene sulfonic acid or a salt thereof.

Abstract: A latex containing a wax additive, useful for example in cement mortar compositions for application in thin layers such as on bridge deck overlays, overpasses, ramps, elevated sections of freeways and other locations where high resistance to penetration by water or corrosive liquids is desired, may be provided by first dissolving the wax in one of the monomers to be emulsion polymerized to form said latex.