Abstract: Disclosed are expandable bladders for use in curing presses for rubber compositions such as pneumatic tires. The bladders are a crosslinked elastomer comprising an isobutylene rubbery polymer. The bladder composition includes corn oil which improves the release characteristics of the cured bladder from a tire innerliner cured in contact with said bladder. The improved release characteristics have been observed to allow rubber compositions such as tires to be molded with fewer defects caused during release of the bladder from the tires or caused by abraded or deformed bladders. The use of corn oil also has been observed to increase the useful life time of the bladder allowing more tires to be cured without changing bladders. A preferred isobutylene rubbery polymer is a brominated copolymer of isobutylene and p-methylstyrene. The bladder compositions have also been observed to have an enhanced flexibility due to the corn oil.

Abstract: A method for reducing residual unsaturated monomer content of an aqueous dispersion of a saturated polymer. The method involves contacting the aqueous dispersion with ozone resulting in ozonolysis of unsaturated monomers. The method is simple, economical and can be used with existing production facilities.

Abstract: A transparent polyurethane has exceptionally high heat distortion temperatures, that is at least 280.degree. F. at 264 psi, as well as good light transmission, ultraviolet light resistance, abrasion resistance, and the like. The urethane intermediate is one or more very low equivalent weight, multifunctional hydroxy containing compounds so that when reacted with a polyisocyanate and cured with a low equivalent weight, multifunctional polyol, a highly crosslinked polyurethane is produced.

Abstract: A plurality of polyurethane layers, some of which have a contrasting color with respect to an adjacent layer is formed into a laminate. During preparation, each layer is separately formed, as by spraying, and the contrasting color ensures that the preceding layer can be fully covered. The laminate can be utilized to cover areas or objects which are otherwise difficult to ensure that it has a continuous or complete coating. The invention is suitable for use as a coating and for the preparation of various in situ articles or enclosures, for example a fuel tank, such as commercial and military aircraft.

Abstract: A plurality of polyurethane layers, some of which have a contrasting color with respect to an adjacent layer is formed into a laminate. During preparation, each layer is separately formed, as by spraying, and the contrasting color ensures that the preceding layer can be fully covered. The laminate can be utilized to cover areas or objects which are otherwise difficult to ensure that it has a continuous or complete coating. The invention is suitable for use as a coating and for the preparation of various in situ articles or enclosures, for example a fuel tank, such as commercial and military aircraft.

Abstract: A transparent moisture-resistant mercaptan composition is made utilizing an amino-titanate catalyst. The composition can be utilized in association with high heat-resistant transparent compositions containing a boroxine compound.

Abstract: A method for preparing a polyurethane wherein the components thereof have a long shelf life. The formulation is made by separately preparing a prepolymer solution, a crosslinking solution, and a cement solution. Upon utilization, the solutions are mixed together and applied. The urethane has very good fuel resistance and can be used as a coating in fuel tanks as well as to form integral fuel tanks.

Abstract: A polyester polyurethane compound is formed by reacting trans-1,4-cyclohexanediisocyanate with a mixed polyester. The mixed polyester can be the copolymerization condensation product of an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid, or a separate physical blend thereof reacted with a polyol. The polyurethane can also contain small amounts of non-extractable epoxies and carbodiimides. The urethane has very good hydrolytic stability in comparison with prior art polyurethane systems and also very good fuel resistance and anti-icing resistance. A preferred area of use is an aircraft fuel tanks and anti-icing components.

Abstract: A composite tread has at least a low hysteresis component and a high hysteresis component therein. The components are geometrically arranged such that upon wear, generally more of the high hysteresis compound is exposed as wear progresses which imparts good traction to the life of the tread.

Abstract: A heterogeneous rubber composition having good air impermeability is made by mixing together separate fractions of rubbers and fillers.

Abstract: A high heat resistant transparency of epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol is disclosed to resist intense heat for these transparencies in their use on military and industrial hardware. Additionally, the transparency may include phosphite or phosphate compounds to improve heat resistance, with the phosphate compound in sufficient concentrations to delay gel times such that the phenyl substituted alkyl alcohol may be eliminated from the composition. This transparency may exist in a composite with other layers of transparent material known to those skilled in the art. The epoxy tranparency layer is bound to the other transparent layers, in a variety of configurations, using an interlayer of mercaptan terminated resins. These resins greatly improve resistance to moisture permeability in and about the edges of the entire transparency.

Abstract: A high heat resistant transparency of epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol is disclosed to resist intense heat for these transparencies in their use on military and industrial hardware. Additionally, the transparency may include phosphite or phosphate compounds to improve heat resistance, with the phosphate compound in sufficient concentrations to delay gel times such that the phenyl substituted alkyl alcohol may be eliminated from the composition. This transparency may exist in a composite with other layers of transparent material known to those skilled in the art. The epoxy transparency layer is bound to the other transparent layers, in a variety of configurations, using an interlayer of mercaptan terminated resins. These resins greatly improve resistance to moisture permeability in and about the edges of the entire transparency.

Abstract: A metal to rubber adhesion promoter comprising the reaction product of a phenol and a substituted melamine, said phenol being ##STR1## wherein R.sub.1 through R.sub.4 are selected from the group consisting of hydrogen, cyclic and acyclic alkyl groups having from 1 to 10 carbon atoms, and a substituted melamine having the formula ##STR2## where R.sub.5 through R.sub.10 may be the same or different and are selected from the group consisting of alkyl groups having from 1 to 5 carbon atoms. The reaction product is a resin and is added to the rubber compound prior to cure. The adhesion promoter is useful in the making of tires having steel belts and in other reinforced rubber articles.

Abstract: A high heat resistant transparency of epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol is disclosed to resist intense heat for these transparencies in their use on military and industrial hardware. This transparency may exist in a composite with other layers of transparent material known to those skilled in the art. The epoxy transparency layer is bound to the other transparent layers, in a variety of configurations, using an interlayer of mercaptan terminated resins. These resins greatly improve resistance to moisture permeability in and about the edges of the entire transparency.

Abstract: A high heat resistant transparency of epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol is disclosed to resist intense heat for these transparencies in their use on military and industrial hardware. This transparency may exist in a composite with other layers of transparent material known to those skilled in the art. The epoxy transparency layer is bound to the other transparent layers, in a variety of configurations, using an interlayer of mercaptan terminated resins. These resins greatly improve resistance to moisture permeability in and about the edges of the entire transparency.

Abstract: High temperature-resistant thermobarriers have a filler therein. The filler can be an opaque thermobarrier material, a fabric or cloth such that a laminated thermobarrier is formed, or preformed bubbles of glass, ceramic or plastic such that a syntactic foam thermobarrier is formed. The thermobarrier contains a boroxine compound therein as well as epoxy resins and various phosphorus compounds and/or aromatic alcohols. Generally, the syntactic foam thermobarriers give the best heat protection.

Abstract: A process for providing a low haze, high transparent, high heat-resistant laminate by forming a preform laminate of a high heat-resistant layer covered on both surfaces by a non-glass protective layer with at least one said layer being an as-cast acrylic layer. This combination can be readily stored for long periods of time or used immediately after the formation thereof by peeling off one of the as-cast acrylic layers and applying a transparent flexible adhesive layer thereto. The transparent material can be added to the adhesive layer. Many other combinations and laminates can be formed from the preform high heat-resistant laminate since during the preparation thereof, haze is not introduced to the transparency via moisture, and contact with haze-forming release coatings is avoided.

Abstract: A method for the elimination of circumferential stress cracks that occur during production of spun polyesters is provided. The cracks are eliminated by the use of an organic solvent miscible with the lubricating emulsion applied during the finish operation before draw twisting of the spun polyester. The organic solvent may be kerosene or mineral oil or solutions containing the same.

Abstract: Specific color imparting compounds, including pigments and catalysts are used to produce a polyester resin having a green color. The compounds are added during polymerization of the polymer and the resins produced can be utilized to make various containers or packages to hold liquids or solids.

Abstract: A copolyester resin having modified carboxyl terminated ends is disclosed, as well as the method for making and using that compound with epoxide curing compounds in powder coating resins for substrates. The polymerization of the copolyester resin contains a reactor compounding stage which permits the reaction of the carboxyl termini with a curing reaction catalyst prior to any compounding or mixing of the modified copolyester resin with the epoxide curing compounds. The modification to these end groups of the copolyester resin creates activated termini which, although stable of themselves, react more rapidly, when the modified copolyester resin is compounded with the epoxide curing compounds and subsequently heated on the substrate, than with the conventional introduction of the epoxide catalyst during final compounding.