The present invention relates to a novel oxirane prepolymer comprising the catalyzed reaction product of an inorganic oxide having at least one hydrolyzable oxygen with a difunctional oxirane oligomer having at least one aromatic moiety and at least one oxirane containing aliphatic moiety, characterized in that substantially all of the hydrolyzable oxygen atoms in said oxide are bonded to said oligomer and there is substantially no bonding between oligomer moieties. The present invention also re...

A hardened cementitious composite produced using conventional mixing techniques, including a microsilica-cement mixture and randomly distributed discontinuous polyamide fibers is described. Other mix ingredients used in forming the composite are superplasticizer, water and possibly aggregates and fly ash substituting for part of the Portland cement. The microsilica particles are essential in dispersing the fibers during the regular mixing, and in enhancing the fiber-cement interfacial bond. Micr...

P-aramid fibers coated with certain titanate compounds is useful for strengthening cement products.

Molded bodies are formed by extruding a mixture of an inorganic binder containing small amounts of an aminoplast resin, preferably an acid modified resin which is based on an amino-s-triazine containing at least 2 NH.sub.2 groups. The mixture may also contain fillers and other additives.

A method for upgrading existing nylon fibers comprising the steps of (a) impregnating the existing nylon fibers with a chemical for obtaining impregnated nylon fibers; (b) drawing the impregnated nylon fibers for obtaining drawn nylon fibers; and (c) drying the drawn nylon fibers for obtaining upgraded nylon fibers. An upgraded nylon fiber, derived from an existing nylon fiber by the method. A nylon fiber reinforced hardened cementitious composite comprising a hardened cementitious matrix, the c...

Power management logic maintains memory in a computer system in the self refresh state during a power savings state in which power is removed from the memory controller. A memory control circuit, separate from the power management logic, controls the memory during other operational modes. The power management logic maintains the system memory in the self refresh state by driving memory control signal(s) at appropriate values during the power savings state.

A dielectric optical polarizer which is operable at high peak and average power, with greater than 95 percent transmission of the desired P polarized radiation, and also greater than 95 percent reflectance of the S polarized radiation. The polarizer comprises a radiation transmissive substrate with a first dielectric layer disposed on at least one side of the substrate. The first dielectric layer has an index of refraction higher than the substrate. A second dielectric layer of low index of refr...

An abrasive sheet or polishing sheet containing an abrasive layer divided into discrete blocks by a network of grooves. The polishing sheet is prepared by making a slurry of abrasive particles and a resin adhesive agent of low density and viscosity, spreading it on a base and heating the resulting sheet from below the base.

A printer and method of operating same which receives print jobs from a host computer encoded in any one of several printer control languages. The printer has the capability of interpreting print jobs in each printer control language. The printer samples a portion of each print job and, using a resident algorithm and data sets obtained by statistical techniques, analyzes the sampled portion of the print job to identify the printer control language in which the print job is encoded.

A method for printing variable data with page description language, which enables the graphics states for a static page to be defined and stored; and which enables the stored graphics states to be associated with items of variable data from a database, so that once defined, the graphics states can be used to print multiple pages of variable data. The method of the present invention is implemented by means of a control task, which executes in a printer in conjunction with a page description progr...