Abstract: A process is disclosed for the preparation of N-substituted aminomethylphosphonic acids, particularly methylaminomethylphosphonic acid, in high yield and purity with related low production cost using conventional equipment, which comprises the steps of (a) reacting an N-substituted amide with paraformaldehyde in a low molecular weight carboxylic acid to form the N-methylol derivative, (b) reacting the N-methylolamide with PCl.sub.3 i n excess low molecular weight carboxylic acid and heating to form the phosphonomethyl derivative, (c) hydrolyzing acid chloride and acid anhydride with water, (d) distilling off the low-molecular weight carboxylic acid, (e) hydrolyzing the N-acyl group with water and strong acid catalyst, (f) adding low molecular weight alcohol to crystallize the N-substituted-aminomethylphosphonic acid and (g) filtering, and washing the product.

Abstract: A Heater-Cooler unit that provides efficient heating and cooling in such a manner that the temperature is easily controlled. The unit's 360 degree exposure enables both fins and barrel surface to be in complete contact with cooling air. The structure of the fins provides contact with the barrel to conduct heat flowing from the heating elements to the barrel surface.

Abstract: This invention is directed to a method for the lightfastness enhancement of dyed nylon fibers by applying at least 10 ppm copper in the form of an alkyl, aryl, or alkyl-aryl copper sulfonate before, during, or after dyeing the nylon fibers.

Abstract: This invention relates to a aqueous phosphate pigment dispersion usable for sugar or film coating tablets and the like, comprising like pigment particles, a polymeric colloid, a phosphate viscosity lowering agent which permits a higher concentration of pigment particles in the pigment suspension, and an aqueous solvent. A typical pigment suspension comprises FD&C pigment, a natural gum as the polymeric colloid, a polyphosphate as the viscosity lowering agent and water as the aqueous solvent.

Abstract: The specification describes a new group of alkanol substituted disazo compounds that are useful in dyeing polyamide textile fibers in orange hues. The new compounds are compatible with several acid blue dyes and several acid red dyes that are commercially important as dyes for nylon. The new compounds are particularly well suited for use as the "yellow" component in trichromatic systems for dying polyamide carpeting and other textiles. The new compounds are relatively inexpensive to make and have outstanding application and fastness properties. Other aspects of the specification are concerned with a method of making the new compounds and with a method of dyeing polyamides with said compounds and to the novel dyed polyamides resulting from the use of the new group of compounds as dyes.

Abstract: Apparatus for drying or removing adhering substances from the surface of a continuous advancing strand or other substantially non-adsorptive material moving at high speeds which enables the wire to be ink-printed immediately. The air wiper utilizes a compressed-air source to dry the wire, as well as a single vacuum pump for exhaust. Cone deflectors direct the wet air away from the wire and toward the vacuum chamber drainage.

Abstract: The invention is directed to a pigment suspension, for use in film coating, comprising titanium dioxide, xanthan gum, and an aqueous solvent. It was found that a pigment suspension comprising 30 percent titanium dioxide was obtainable that did not settle or harden for an extended period of time.

Abstract: The present invention is a process for the preparation of concentrated anionic red dye solutions which are storage stable. The process allows manufacture of a solution of a dye having the formula: ##STR1## wherein R.sub.1 is --SO.sub.2 N(CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3).sub.2, --SO.sub.2 N(C.sub.6 H.sub.5)(CH.sub.2 CH.sub.3), --SO.sub.2 N(CH.sub.3)(C.sub.6 H.sub.11), or --CF.sub.3 ;R.sub.2 is --H, --Cl or ##STR2## and R.sub.3 is lower alkyl M is ##STR3## wherein R.sub.4 and R.sub.5 are --H or --CH.sub.3 independently andm+n+q.ltoreq.9, but >0,by reacting a dye having the structure: ##STR4## wherein R.sub.1 is --SO.sub.2 N(CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3).sub.2, --SO.sub.2 N(C.sub.6 H.sub.5)(CH.sub.2 CH.sub.3), --SO.sub.2 N(CH.sub.3)(C.sub.6 H.sub.11), or --CF.sub.3 ;R.sub.2 is --H, --Cl or ##STR5## wherein R.sub.3 is lower alkyl, andX is NH(R.sub.6).sub.3,wherein R.sub.

Abstract: This invention relates to a pigment suspension usable for film coating tablets and the like, comprising lake pigment particles, a polymeric colloid, a viscosity lowering agent, which permits a higher concentration of pigment particles in the pigment suspension, and an aqueous solvent. A typical pigment suspension comprises a lake pigment, titanium dioxide, a natural gum, sodium tartrate, and water.

Abstract: A method for the manufacture of a cross-linked extruded elongated product from polyethylene or other suitable polymer. The polymer is fed into the hopper of a screw extrusion machine. The polymer is heated and melted while being conveyed through the barrel of the screw extruder. A liquid silane compound which comprises a modified vinyl functional silane, a free-radical generator, and a condensation catalyst is carefully metered and injected into the melted polymer. The melted polymer and the liquid silane compound are then mixed and blended to obtain a uniform blended mixture thereof. The blended mixture is then extruded through an extrusion die to form an elongated product of a required final shape and the elongated product is then subjected to the action of moisture and heat until the polymer in the elongated product is cross-linked.

Abstract: A trichromatic dye system for the dyeing of synthetic polyamide fibers, the system including an acid red dye component, an acid blue dye component, and an acid yellow dye component, each of the dye components being compatible from a performance standpoint.

Abstract: New disazo sulphophenyl pyrazolone-sulpho stilbene compounds are useful as orange-hued dyes for cellulosic having excellent color stability over a wide pH range and when in aqueous solution are useful as liquid paper black dyes.

Abstract: A new group of disazo sulphophenylpyrazolone-sulphostilbene compounds useful as orange-hued dyes for cellulosics having excellent color stability over a wide range of pH. When mixed with certain direct blue dyes and also with combinations of certain direct blue and yellow dyes, they form dye mixtures that are highly soluble in water and can effectively function as uniquely stable liquid black paper dyes which do not change hue over a wide range of pH conditions, thereby simplifying the problem of the dyer in matching and maintaining uniformity of hue.

Abstract: An extrusion drive control system for control of extrusion process machinery driven elements. A drive interface unit is adapted for use with any of a variety of drive motors and regulators. The interface unit accepts analog condition information signals from the drive motor and regulator, having any of a plurality of predetermined input characteristics, and provides corresponding digital signals having characteristics that are invariant with respect to the particular input characteristics. The interface unit has a communication channel for receiving digital control signals and for outputting digital signals indicating drive operating conditions. The low power digital circuitry and communications channel are protected from the high voltage and high power connections to the drive and drive regulator.

Abstract: A yarn clamp for periodically clamping yarn on textile machines comprising a pair of clamping rollers supported on a frame for rotation about their axes. Means is provided for moving the clamping rollers into and out of contact with each other and for imparting a partial rotation to each of the rollers while they are out of contact. A wiping means is provided for wiping the surfaces of the clamping rollers when they rotate to avoid the accumulation of lint on the surfaces of the clamping rollers.

Abstract: A yarn brake for a textile machine. The yarn brake comprises a stationary clamping plate and a movable clamping plate. The plates are forced together by first and second biasing means to provide full braking pressure on a yarn passing between the plates. De-activating means operate to selectively nullify the effect of the second biasing means to provide partial braking pressure on the yarn, or to nullify the effects of both biasing means so that there is no braking pressure on the yarn. The invention also includes a weft yarn braking system for a multi-weft loom utilizing a yarn brake of the present invention for each weft yarn. Control means, operating in timed relation to the loom, operate the brakes in a programmed sequence. The yarns are fully braked when not being inserted into the loom.

Abstract: Ribbon cable extrusion crosshead comprising a die having interconnected extrusion passages and a guide block provided with wire guiding holes axially aligned with the passages. Top and bottom distribution channels are located, respectively, above and below the die and are connected to an inlet bore by top and bottom feed bores, respectively. Upper and lower flow channels intersect at the openings of the die passages and extend across the full width of the sheet of wires extending from the guide block to the die. Top and bottom flow compensating channels, connect the top and bottom flow channels, respectively, to the top and bottom distribution channels, respectively.

Abstract: Shuttle control apparatus for looms having a shuttlebox rotatable 180.degree. from a first, shuttle receiving, position to a second picking position, means for checking and positioning the shuttle to a predetermined picking position within the shuttle box, and means for picking the shuttle. The control apparatus comprises means for guiding and maintaining the shuttle in the predetermined picking position during rotation of the shuttle box and means for braking the shuttle only when it is in the second position.

Abstract: This invention relates to new compounds having the structure: ##STR1## wherein M is H, Na, K, Li, N(R).sub.3 H and R is H, lower alkyl or lower hydroxy alkyl and R.sub.1 is oxygen, sulfur, imino, lower alkylimino, cyanoimino and carbamoylimino moieties. The new compounds are useful as fluorescent greenish-yellow dyes for paper.

Abstract: A plastic extruder system having a barrel and a shell with heat exchange elements surrounding the barrel is disclosed. Two thermocouples are provided, one for sensing the temperature of the inner surface of the barrel and the other for sensing the temperature of the shell. A system controller, into which a desired barrel setpoint temperature can be set and stored, receives and stores the independent temperature signals from the thermocouples and controls the heat exchange elements to automatically maintain the temperature of the extruder barrel close to the desired barrel setpoint temperature.