Abstract: Waterborne hydrophobic cleaning and coating compositions of this invention are prepared by combining one or more silicone ingredient, with water, and at least one solubilizing agent capable of making the silicone ingredient miscible in water to form a homogeneous mixture. Optionally, cleaning and costing compositions of this invention can include volatilizing agents, to reduce application time, and colorizing agents, to provide a desired composition color. The silicone ingredient can be selected from the group of silicone resins, silicone oils, and mixtures thereof. Preferably, the silicone ingredient comprises a functional group that is capable of forming a bond with a chemical group of the underlying substrate. Preferably, the solubilizing agent is one that is selected from the group consisting of organic solvents, alcohols, ketones, acetates, ethers, esters, aromatics, and mixtures thereof that are soluble in water and that are capable of cleaning a substrate surface.

Abstract: A double containment glass fiber pipe section is formed by a single winding operation. The pipe section may be a pipe or a pipe fitting. A section of primary pipe is wound and wrapped by a plastic tape. A permeable material layer is then wrapped around the wrapped primary section. One or more plastic tape layers are then wrapped over the permeable material layer followed by a winding of the secondary pipe section. The assembly is then cured forming a double containment pipe section having a permeable annulus having a radial thickness of about 1 mm. The permeable annulus is defined by the permeable material between the primary and the secondary sections. The permeable material allows for the flow of fluids within the annulus. A pair of wires may be helically wound within the annular space and can be used to detect leakage from the primary pipe section flowing within the annulus by monitoring changes in the capacitance or the resistance between the wires.

Abstract: A pipe coupling for two pipe ends having the same inner diameter includes a first pipe coupling joining the pipe ends. The first pipe coupling is formed from a section of pipe having approximately the same inner diameter as the pipe ends and is split longitudinally. A second pipe coupling is clamped over the location of the junction between the pipe ends. The second pipe coupling is formed from a section of pipe having approximately the same inner diameter as the pipe ends and is split longitudinally. The split of the second pipe coupling is offset from the split of the first pipe coupling. The couplings may include an inner and an outer coupling, two outer couplings, or an inner coupling and two outer couplings. Each inner coupling have a strip of material removed along its longitudinal split so that it can be compressed to substantially close the gap at its split and inserted into a pipe end.

Abstract: Halogenated resin compositions are prepared without using halogen acids by combining at least one silicone intermediate, with an optional silane, an organic halogen-containing ingredient having functional groups selected from the group consisting of hydroxy, amine, and carboxyl groups, and a resin selected from the group consisting of hydroxy- and epoxy-functional resins. One or more amine curing agent and/or catalyst selected from the group consisting of organometallic compounds, acids, bases, and mixtures thereof can optionally be added to facilitate ambient temperature curing of the resulting composition. The combined ingredients undergo hydrolysis reactions to form a halogenated organooxysilane that condenses to form a cross-linked halogenated polysiloxane composition. The resin also reacts with the condensing halogenated organooxysilane to introduce itself into the cross-linked halogenated polysiloxane and, thereby form the halogenated polysiloxane resin composition.

Abstract: A helical weld servo controller for controlling the diameter of helically formed welded pipes adjusts the auxiliary hold down wheel position and the helix angle based on information provided by transducers regarding outgoing pipe diameter and by a laser vision device which generates weld gap and offset information.

Abstract: Adhesive/adherend systems of this invention comprise a siloxane-modified adhesive component and a siloxane-modified adherend component. The siloxane-modified adhesive component is prepared by combining an epoxy resin with an organosilane ingredient, a polysiloxane resin, an amine hardener, an organometallic catalyst, a base catalyst, and any thickener and extender pigment. The siloxane-modified adherend component is prepared using a polysiloxane resin and may also contain other resins such epoxy, phenolic, polyester, vinyl ester, polyurethane, polyamide, melamine, furan, acrylate, thermoplastic polyvinyl chloride, polyethylene, polycarbonate, ABS, polystyrene, ethylene vinyl acetate, polyvinyl acetate, polyamide, and polypropylene resins.

Abstract: A double containment coupling is used to form a mechanical joint between double containment pipes. The coupling has an inner primary member within an outer secondary member. Two seals, one on top of the other, are fitted on top of the primary pipe which extends beyond the secondary pipe of the double containment pipe. The coupling inner member is fitted over the primary pipe and seals. An inner locking nut is threaded on the coupling inner member outer surface pushing a thrust ring onto one of the seals, sliding the seal over the other seal compressing and energizing both seals so as to create a seal between the primary pipe and the coupling inner member. A first end of a closure member is threaded onto the outer surface of the coupling outer member. An outer locking nut threaded on a second end of the closure member compresses a seal between the closure member and the secondary pipe creating a seal between the closure member and the secondary pipe outer surface.

Abstract: A protective coating composition with early water resistance is prepared, according to principles of this invention, by combining in the presence of water and in their proper proportions: (1) zinc dust; (2) a Group IA metal silicate; (3) a colloidal silica ingredient that is modified with a Group IA metal silicate; and (4) a carbonate-containing internal hardener. Optional ingredients such as a stabilizing agent, external hardener, pigments and fillers, and other additives can be used to achieve certain coating properties depending on the final intended coating application. The Group IA metal silicate and colloidal silica ingredient that is modified with a Group IA metal silicate react, in the presence of the other ingredients, to form a silicate network having early water resistance, i.e., water insolubility, improved high-temperature resistance, improved corrosion resistance, and zero volatile organic content.

Abstract: A cutting tool for cutting jacketed pipes and other cylindrical objects comprising a handle attached to a guide and a blade translatably and rotatably secured within the handle. The blade is mounted to a blade mounting assembly. The blade mounting assembly is biased towards the guide by a spring. Extension of the blade in the direction of the guide is limited by an engagement arm of the blade mounting assembly which may be placed in slots radiating in different directions in the free end of the handle. Thus, the blade may be securely positioned at differing amounts of extension and at differing angles with respect to the handle.

Abstract: A pre-packed well screen has concentric inner and outer fiber reinforced composite tubes with a granular filter medium in the annulus between the inner and outer tubes. The walls of the tubes are slotted for passing fluid through the slots and the filter medium. Each end of the inner tube extends beyond the adjacent end of the outer tube and has a male thread. A connection is made to an adjacent well screen or other tube by a female coupling member threaded onto the male thread. An advantage of the design is that the coupling member connected to the inner tube has an outside diameter approximately the same as the outside diameter of the outer tube.

Abstract: A prestressed concrete pole is internally mounted to a pre-existing foundation and may be vertically aligned or leveled with the foundation. The pole has an internal cavity in its base which includes an internal baseplate disposed above the bottom of the pole. The baseplate axially compresses the pole in combination with prestressing cables. An adjusting plate is attached to the baseplate and includes holes for accepting anchor bolts extending vertically from the foundation. An access window is provided between the baseplate and adjusting plate to enable an installer to adjust fasteners on the anchor bolts below the plates. By adjusting the upper and lower fasteners on the anchor bolts, the pole can be leveled.

Abstract: A flexible liner is formed from a resilient material and includes a back side surface having a number of outwardly projecting members that extend a distance away from the liner. The flexible liner is in sheet form for rehabilitating surface sections, and is not in the form of a tube to cover an entire surface diameter. The outwardly projecting members each have a head enlarged profile configured to provide a strong mechanical lock with a carrier that is injected within an annular space disposed between the liner back side surface and the underlying substrate surface in need of surfacing or rehabilitation. The liner is positioned adjacent the structure surface by use of a collapsible, expandable form, and a carrier is injected within the annular space disposed therebetween so that the liner outwardly projecting members are completely enveloped by the carrier. The carrier is cured to form a mechanical lock between the outwardly projecting members and the carrier.

Abstract: Epoxy-polysiloxane polymer compositions of this invention are prepared by combining a resin component with a hardener component. The resin component comprises a non-aromatic epoxy resin ingredient and a polysiloxane ingredient. The hardener component comprises an amine and optionally an organotin catalyst. The composition can also include aggregates, pigments, and other additives depending on the particular end use. The composition is prepared using a sufficient amount of water to promote hydrolysis of the polysiloxane and the polycondensation of the silanols produced by such hydrolysis. In its cured form, the epoxy-polysiloxane composition exists as a uniformly dispersed arrangement of linear epoxy chain fragments that are cross-linked with a continuous polysiloxane polymer chain, thereby forming a non-interpenetrating polymer network chemical structure that has substantial advantages over conventional epoxy systems.

Abstract: Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. In a first embodiment, a resin rich fire resistant layer is applied to the surface of the structural pipe wall. The carrier is capable of accommodating a large amount of resin. The resin used to impregnate the carrier is selected from the same group of resins used to form the structural pipe wall. It is desired that both resins be compatible, and preferably be the same, to facilitate forming a bond between the structural pipe wall and the fire resistant layer during cure.

Abstract: A pipe joint for fiber reinforced composite pipe has internal and external matching tapers with a low taper angle. A half round helical groove is formed in each of the internal and external tapers for receiving several turns of a ductile key. The pipe joint is usable on high strength lightweight fiber reinforced composite pipe having helically wound steel strips embedded in the fiber reinforced resin. The pipe joint on such pipe is on an enlarged portion of glass fiber reinforced composite built up on an end of the pipe. The steel strips are terminated at differing distances from the end of the pipe joint and the ends of all of the steel strips are completely embedded in the fiber reinforced resin.

Abstract: Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. A jacket is disposed around the structural pipe wall and comprises alternating release layers and fiber-reinforced resin layers. The release layer is formed from a material that is incompatible with the resin of the structural pipe wall and fiber-reinforced resin layers, and is energy absorbing to improve impact resistance and reduce thermal stress. The jacket is formed having a sufficient number of alternating layers, having sufficient layer thicknesses, to protect the structural pipe wall from heat induced failure produced by exposing the outermost pipe wall to a 1,000.degree. C. flame for at least five minutes in a dry condition.

Abstract: A polysiloxane polyurethane composition is prepared by combining in the presence of water and in a predetermined proportion an organic di- or polyisocyanate, a polyol, an hydroxyl-containing silicon material having the hydroxyl groups attached directly to a silicon atom, an organotin catalyst, an amine catalyst, a methoxy-functional silicone intermediate, and a carbinol. If desired, various different fillers, pigments, solvents, and additives for enhancing pigment wetting and flow control and the like can also be used to prepare the coating. The chemical ingredients are combined together to undergo chemical reaction to form silanol-functionalized urethane prepolymers that cure at ambient temperatures in the presence of moisture to form a polysiloxane polyurethane composition having enhanced properties of chemical and weather resistance, high tensile and tear strength, and high elongation.

Abstract: Phenolic siloxane compositions are prepared in a first embodiment by combining phenol with an aldehyde and an alkoxy or silanol-functional silicone intermediate; in a second embodiment by combining a phenolic novolac resin with a formaldehyde donor and an alkoxy or silanol-functional silicone intermediate; and in a third embodiment by combining a phenolic resole resin with an alkoxy or silanol-functional silicone intermediate. Optionally, a catalyst to facilitate formation of a phenolic resin from phenol and formaldehyde can be added, a catalyst to facilitate condensation of the phenolic resin can be added, and at least one catalyst to facilitate hydrolysis and/or condensation of the silicone intermediate can be added. The phenolic resin catalyst can include acids, bases, and formaldehyde donors. The silicone intermediate catalyst can include organometallic compounds, amine compounds, and mixtures thereof.

Abstract: Fiber-reinforced resin pipes and pipe fittings have a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a polymer resin. An intermediate layer is disposed around the structural pipe wall, and a fiber-reinforced layer is disposed around the intermediate layer. The intermediate layer is formed from material selected from the group consisting of impact attenuating and impact absorbing materials. The fiber-reinforced resin layer comprises layers of helically wound reinforcing fiber bonded together with a polymer resin. The materials selected to form the fiber-reinforced resin layer can be the same or different from that used to form the structural pipe wall. The pipe may comprise a single intermediate and fiber-reinforced layer disposed around the structural pipe wall, or may comprise an impact resistant jacket disposed around the structural pipe wall, wherein the jacket is made up of alternating intermediate and fiber-reinforced resin layers.

Abstract: A fire resistant sprinkler coupling for fire resistant composite pipe having a stainless steel pipe coupling having a first portion for attachment of a nozzle and a second portion adapted to receive a nipple. The nipple extends through a wall of the composite fire resistant pipe and into a stainless steel anchor sleeve for securing the pipe coupling to the composite fire pipe. An outer protective jacket is positioned on an outer surface of the composite fire steel sleeve and insulation pipe around the nipple and at least a portion of the pipe coupling. The outer protective jacket comprises a stainless steel sleeve and an insulation layer. Alternatively, the outer protective jacket includes a structural wall comprising layers of helically wound reenforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof.