Abstract: A vehicle window assembly including a protective transparent plastic window liner covering the inner side of the glass pane and held removably in place by flexible liner-retaining strips having quarter-round molding portions overlying the margins of the liner and anchor portions that are releasably secured in mounting grooves along the edge portions of the window pane. The anchor portions are integral with the molding portions and are pressed into the grooves past detent ribs that lock the strips releasably in place, to secure the window liner against easy removal by a passenger but permitting removal by service personnel for replacement. The mounting grooves are in elongated window-retaining bars that are positioned against the inner side of the paneand also are removably secured in place for ease of reglazing, having enlarged deformable anchors pressed into locking grooves with restricted open sides forming releasable tongue-and-groove connections for removal by tilting of the bars.

Abstract: Low viscosity methacrylic-urethane oligomers useful as a styrene monomer substitute in unsaturated resin compositions, are prepared by reacting a hydroxy ethyl or propyl methyl methacrylate monomer with an elastomeric urethane prepolymer having free NCO groups.

Abstract: The invention features a polyamine epoxide adduct, prepared by admixing a source of epoxy group with a polyamine, and allowing the epoxy groups to react with the terminal amino groups of the polyamine so as to form the polyamine epoxy adduct. The polyamine epoxide adduct of the invention can be used as a component for preparing a polyurea polymer, thereby providing the resulting polyurea polymer with improved adhesiveness and greater chemical resistance to acidic conditions. Polyurea polymer coatings prepared from polyamine epoxide adducts demonstrate better chemical resistance and adhesion when applied to substrates than do conventionally prepared polyurea formulations.

Abstract: A composite polyurethane foam structure and method of preparing the composite structure, which structure includes a semirigid-rigid polyurethane foam layer having bonded, free, unreacted, ethylenically unsaturated groups like allyl or acrylic groups. The structure includes a cured, unsaturated resin composition layer which is chemically bonded to one or both surfaces of the polyurethane foam layer through the polymerization of the allyl or acrylic group in the foam surface with the polyester resin composition.

Abstract: An aliphatic polyurea prepolymer prepared by the catalyst-free, exothermic reaction of a caprolactone monomer, an aliphatic primary polyamine, and an aliphatic monomer-free polyisocyanate, such as a hexamethylene diisocyanate dimer or trimer or mixtures thereof.

Abstract: A dual rotary latch assembly installed in the door of an RV and comprising two rotary latches spaced apart along the free edge of the door and connected by a linkage embedded in the door to open the upper latch along with the lower latch but slightly in advance thereof. The linkage includes a slide mounted on the lower latch with a lost-motion connection and connected to the trip lever of the lower latch to be moved thereby, a spring-loaded adjustable connection between the slide and an elongated link, for adjusting the timing of the operation of the upper latch, and a pivotal connection between the link and the trip lever of the upper latch, to move this to the unlatching position during the movement of the trip lever of the lower latch toward its unlatching position. The spring for the linkage can be selected to resist 30 “G” dynamic forces.

Abstract: A method of preparing a polyester resin composition laminate, which method comprises spraying an unsaturated polyester resin composition with an acrylic-urethane prepolymer onto a substrate, like a glass fiber, and curing the sprayed composition by radiant light.

Abstract: A polyurethane composition to provide a rigid polyurethane foam suitable for use as a core material in a composite laminate and which polyurethane composition includes an additive compound or oligomer-prepolymer having hydroxy groups for reaction with the diisocyanate of the polyurethane or which has been prereacted with a diisocyanate and which contains after the polyurethane reaction ethylenically unsaturated groups, like allyl or acrylic groups, to react with an unsaturated polyester resin. The invention includes the organic additive oligomer-prepolymer and the hybrid polyester-rigid polyurethane laminates.

Abstract: An acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, such as MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate. The prepolymer composition contains a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition and a photoinitiator to promote the polymerization of the resin by exposure to radiant energy. The employment of the urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the photocured, unsaturated resin composition.

Abstract: A method of preparing a radiant energy cured polyester resin composition which contains a modified acrylic urethane prepolymer, a styrene monomer, and a photoinitiator. The polyester resin composition is cured by exposure to radiant energy alone or with peroxide curing agents.

Abstract: A generally rectangular reglazable vehicle window comprising a window panel of two spaced frames with an edge seal around the periphery of the panel; an egress frame in which the window panel is mounted; and a backframe defining the opening in a vehicle wall, the egress frame being hinged along an upper side on the upper side of the backframe to swing outwardly when released by an egress handle. The window panel is mounted in the egress frame between a fixed abutment rim blocking inward movement of the panel, and a removable abutment rim that is formed integrally with a retainer ring extending around the egress frame between the panel and the backframe. The ring is wedge-shaped in cross-sections for ease of insertion and removal.

Abstract: The invention concerns a multifunctional polyacrylate aliphatic polyurethane oligomer or prepolymer of low molecular weight, a method of preparing such oligomers, and cured polymers and cured laminate-type products employing such oligomers.

Abstract: An amino-acrylate polymer is prepared by the reaction of an aliphatic hydroxyl polyacrylate monomer, like pentaerythritol triacrylate, with a polyamine like a hexyldiamine to provide a rigid fast gelling and curing polymer, which polymer may be modified with resin modifiers. The amino-acrylate polymer may be used in the preparation of composite structures with fibers and filler materials.

Abstract: A modified acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, like MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate, which prepolymer composition may contain a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition. The employment of the modified urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the cured, unsaturated resin composition, such as a reduction in glass roll-out when the resin composition is employed with fiberglass.

Abstract: An acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, like MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate. The prepolymer composition contains a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition and a photoinitiator to promote the polymerization of the resin by exposure to radiant energy. The employment of the urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the photocured, unsaturated resin composition.

Abstract: The invention concerns a multifunctional polyacrylate aliphatic polyurethane oligomer or prepolymer of low molecular weight, a method of preparing such oligomers, and cured polymers and cured laminate-type products employing such oligomers.

Abstract: A modified acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, like MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate, which prepolymer composition may contain a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition. The employment of the modified urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the cured, unsaturated resin composition, such as a reduction in glass roll-out when the resin composition is employed with fiberglass.

Abstract: A peroxide-generating composition for use in curing an unsaturated polyester resin and to the cured unsaturated polyester resin composition so prepared, particularly unsaturated polyester resin compositions containing inert filler materials used prepare a cast or molded product. The peroxide-generating composition comprises an allyl alcohol alkanoate, such as allyl alcohol propoxylate, which in the presence of a metal salt promoter, such as cobalt carboxylate, either with the allyl alcohol alkanoate or separately as a prepromoter in the unsaturated polyester resin composition provides for the generation from the allyl alcohol alkanoate of a peroxide to effect the in situ cure of the unsaturated polyester resin composition.

Abstract: A window assembly is mounted in a socket window opening of a motor vehicle with the interior side of the window frame substantially coplanar with the body flange in the window opening and the exterior side of the assembly. The window assembly is secured in place by means of self-tapping screws or other fasteners that extend through perforations in the window frame in the body flange into the window frame. In the best embodiment of the invention a stationary window and a sliding window are mounted wholly within the space forming the socket and substantially the entire window frame is also mounted within the socket.

Abstract: An on-site reglazable window assembly suitable for mounting in an aperture in a wall of a recreational vehicle and comprising a stationary glass panel, a slidable glass panel, a slidable screen panel, and slidable storm panels. All of the panels are removably positioned within a generally rectangular frame formed of a unitary metal extrusion having a plurality of flanges which provide glazing channels for the panels and means for mounting the frame to the vehicle wall. One of the exterior flanges includes a key-shaped slot which receives a correspondingly keyed flexible gasket along the entire perimeter of the frame. The gasket has a plurality of splines attached to a compressible tube so that the splines and tube are compressed between the inner surface of the exterior flange and the outer surface of the vehicle wall. The slidable screen and storm panels slide within respective channels of a removable multiple channel track.