Abstract: A method for polymerizing predominantly one or more acrylate and/or vinyl acetate monomers in the presence of a latex results in high solids dispersions of polymer particles with lower viscosities than traditionally observed. A significant wt. % of added monomers can be present in large particles, having nonspherical shapes. Some of the original latex particles are retained during the polymerization and these increase the solids content and lower the viscosity by packing in the interstices between large particles. The total polymer solids content can easily be varied from 70 to 92 or more wt. % which are higher than achieved in any previously reported aqueous polymerizations. The viscosities at very high solids contents become paste-like but the materials still are stable to storage and further handling without breaking the dispersion into an agglomerated polymer portion and released water. The dispersions are useful to form sealants, membranes, etc., either with or without other additives.

Abstract: A high solids, water-borne coating comprises a latex polymer, non-film-forming particulates and water. The high solids coating contains up to 90% solids (non-volatiles/volume) and pigment volume concentration (PVC) that can range between about 5% to 95%. The thick-coverage surface coating herein dries at a fast rate, provides excellent through-dry properties as measured by tensile, elongation, and water resistance, and can replace traditional coatings used in multi-coat processes. The coating herein can contain up to about 40% hollow microspheres to yield a dried coating that has up to about 57% PVC and be used as a roof coating that meets a required elongation of at least 200%.

Abstract: A method for polymerizing predominantly one or more acrylate and/or vinyl acetate monomers in the presence of a latex results in high solids dispersions of polymer particles with lower viscosities than traditionally observed. A significant wt. % of added monomers can be present in large particles, having nonspherical shapes. Some of the original latex particles are retained during the polymerization and these increase the solids content and lower the viscosity by packing in the interstices between large particles. The total polymer solids content can easily be varied from 70 to 92 or more wt. % which are higher than achieved in any previously reported aqueous polymerizations. The viscosities at very high solids contents become paste-like but the materials still are stable to storage and further handling without breaking the dispersion into an agglomerated polymer portion and released water. The dispersions are useful to form sealants, membranes, etc., either with or without other additives.

Abstract: A method for polymerizing at least one unsaturated monomer in the presence of a latex results in a high solids dispersion of polymer particles with lower viscosities than traditionally observed. A significant wt. % of the polymer from added monomers can be present in large particles, having nonspherical shapes. Some of the original latex particles are retained during the polymerization and these increase the solids content and lower the viscosity by packing in the interstices between large particles. The total polymer solids content can easily be varied from 70 to 92 or more wt. %. The viscosities at very high solids contents become paste-like but the materials still are stable to storage and further handling without causing the dispersion to separate into an agglomerated polymer portion and released water. The dispersions are useful to form sealants, membranes, etc., either with or without other additives.

Abstract: A method for polymerizing predominantly one or more acrylate and/or vinyl acetate monomers in the presence of a latex results in high solids dispersions of polymer particles with lower viscosities than traditionally observed. A significant wt. % of added monomers can be present in large particles, having nonspherical shapes. Some of the original latex particles are retained during the polymerization and these increase the solids content and lower the viscosity by packing in the interstices between large particles. The total polymer solids content can easily be varied from 70 to 92 or more wt. % which are higher than achieved in any previously reported aqueous polymerizations. The viscosities at very high solids contents become paste-like but the materials still are stable to storage and further handling without breaking the dispersion into an agglomerated polymer portion and released water. The dispersions are useful to form sealants, membranes, etc., either with or without other additives.

Abstract: The present invention to a method of synthesizing poly(vinyl halide) by means of a free radical polymerization which mimics a "living" radical polymerization in the presence of an iodine containing chain transfer agent containing at least one iodine atom bonded to a primary carbon atom and having the formula:R--CH.sub.2 I (I)R--CHX I (II),R--CH(X)--CH.sub.2 I (III),R--CH(X)--CHX I (IV), orR--CH(X)--CH.sub.2 --CHX I (V),wherein X is fluorine, chlorine, bromine, or iodine, R is hydrogen, C.sub.1, C.sub.2, C.sub.3, C.sub.4, C.sub.5 alkyl, any of which are linear or branched, cyanoalkyl, cyclohexyl, methyl cyclohexyl, phenyl, benzyl, and halogenated or oxygenated derivatives thereof.In accordance with the invention there is further provided a method of synthesizing 1-halo-1-iodoethane by reacting hydrogen iodide with vinyl chloride or vinyl fluoride in the presence of an iodine generating catalyst under certain specified conditions.

Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane which is useful as a chain transfer agent in the polymerization of vinyl chloride monomer. The 1-chloro-1-iodoethane formed by the instant invention can be made separately in a conventional synthesis apparatus or the compound can be synthesized in situ in the reaction vessel used for polymerization of vinyl chloride.

Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane. This 1-chloro-1-iodoethane is useful as a chain transfer agent in the polymerization of vinyl chloride monomer in a process which mimics a pseudo-living radical polymerization.