Abstract: The present disclosure relates to a method and apparatus for preparation of recycled carpet scrap containing elevated levels of an inorganic filler. The disclosure also relates to associated methods of melt processing to control and monitor the level of inorganic filler, as well as compositions of the recycled carpet scrap as an additive in hot mix asphalt.

Abstract: At a transmit site of an inverse multiplexing system, an input demultiplexer demultiplexes high bandwidth serial communication signals (e.g., fractional T3 rate signals) into communication signal packets for transmission over reduced bandwidth serial communication (e.g. T1) channels. A multiplexer for each channel combines successive packets of demultiplexed signals with bits of multibit packet reassembly control words that identify the channel and the order in which communication signal packets have been demultiplexed, to produce successive frames for transmission over the channel. At a receiver site the control words are extracted from the frames of data and analyzed to control reassembly of the serial data packets into their original order.

Abstract: A called telephone number substitution mechanism is incorporated into the call-routing software employed by the microcontroller of a customer premises-installed communication device, through which digitized voice and data services are supplied to a customer site. The number substitution mechanism automatically selectively modifies digits of an original (dialed) telephone number, as necessary, to conform with the connectivity requirements of the communication link serving the destination device, thereby enabling the call to reach the destination device.

Abstract: Apparatus for shielding the hazardous pointed bottom or damaged top ends of leg members that depend from an article, such as a yard sign, comprising, a plurality of open-ended receptacles, each having a sidewall with a peripheral rim and being interconnected by a flexible cord of variable length that is trained over a portion of the article to provide restraining force to maintain the receptacles in position covering one or more ends of the legs. A method of attaching the apparatus is also disclosed.

Abstract: At a transmit site of an inverse multiplexing system, an input demultiplexer demultiplexes high bandwidth serial communication signals (e.g., fractional T3 rate signals) into communication signal packets for transmission over reduced bandwidth serial communication (e.g. T1) channels. A multiplexer for each channel combines successive packets of demultiplexed signals with bits of multibit packet reassembly control words that identify the channel and the order in which communication signal packets have been demultiplexed, to produce successive frames for transmission over the channel. At a receiver site the control words are extracted from the frames of data and analyzed to control reassembly of the serial data packets into their original order.

Abstract: A called telephone number substitution mechanism is incorporated into the call-routing software employed by the microcontroller of a customer premises-installed communication device, through which digitized voice and data services are supplied to a customer site. The number substitution mechanism automatically selectively modifies digits of an original (dialed) telephone number, as necessary, to conform with the connectivity requirements of the communication link serving the destination device, thereby enabling the call to reach the destination device.

Abstract: Substituted 5,6-dihydro-5-oxo-1,4-dithiino-(2,3-d)-pyridazine-2,3-dicarbonitriles are prepared which correspond to the formula: ##STR1## wherein R represents ##STR2## wherein X.sup.1 is Cl, Br, NO.sub.2 or CH.sub.3, y is 0 or 1 and n is 0, 1 or 2.These compounds have been found to exhibit antimicrobial and marine antifouling activity in industrial and commercial applications and compositions containing these compounds are so employed.

Abstract: 2,3-Difluoro-5-(trifluoromethyl)pyridine is prepared by contacting a 2,3-dihalo-5-(trifluoromethyl) pyridine with an effective amount of KF or CsF in a polar aprotic solvent (diluent) at an elevated temperature under substantially anhydrous conditions with removal of the difluoropyridine products essentially as they are formed. The starting material may optionally be added as the reaction proceeds to minimize decomposition. The reaction is also optionally conducted in the presence of an acid scavenger and/or a crown ether or other phase-transfer catalyst.

Abstract: Finely divided potassium chloride is removed from mixtures with polar, aprotic solvents, such as N-methyl-2-pyrrolidinone, by combining the mixture with sufficient water to dissolve a significant portion, but not all of the potassium chloride present, removing the added water by distillation, and subsequently separating the larger crystals of the salt that form by filtration or centrifugation. The amount of water employed is in the same general range as the amount of polar, aprotic solvent present.

Abstract: 2,3-Difluoro-5-(trifluoromethyl)pyridine is prepared by contacting a 2,3-dihalo-5-(trifluoromethyl) pyridine with an effective amount of KF or CsF in a polar aprotic solvent (diluent) at an elevated temperature under substantially anhydrous conditions with removal of the difluoropyridine products essentially as they are formed. The starting material may optionally be added as the reaction proceeds to minimize decomposition. The reaction is also optionally conducted in the presence of an acid scavenger and/or a crown ether or other phase-transfer catalyst.

Abstract: Alpha, beta-difluoropyridine compounds are prepared by contacting a 2,3-dihalopyridine compound or suitable precursor thereof with an effective amount of KF or CsF in a polar aprotic solvent (diluent) at an elevated temperature under substantially anhydrous conditions with removal of the difluoropyridine products essentially as they are formed. The starting material may optionally be added as the reaction proceeds to minimize decomposition. The reaction is also optionally conducted in the presence of an acid scavenger and/or a crown ether or other phase-transfer catalyst.

Abstract: The preparation of 3,5-dichloro-2,4,6-trifluoropyridine from pentachloropyridine and potassium fluoride was found to proceed in high yield and at a rapid rate with little tar formation when the reaction is conducted under essentially anhydrous conditions in N-methylpyrrolidone solvent at temperatures below 170.degree. C. High yields of this intermediate for herbicides are obtained.

Abstract: The components of aqueous ammonium fluoride solutions are recovered as ammonia and potassium fluoride by adding potassium hydroxide, distilling to remove and secure the ammonia, concentrating the remaining solution and combining it with a water soluble, dipolar, aprotic solvent, such as N-methylpyrrolidone, and distilling to remove the remaining water to obtain the potassium fluoride as a slurry in the solvent. Slurries of potassium fluoride are useful in the replacement of chloride in heterocyclyl and aryl chlorides by fluoride.

Abstract: Preparation of 2,3-dichloro-5-trichloromethylpyridine in high yields and purity by chlorinating 2-chloro-5-trichloromethylpyridine at 70.degree. to 250.degree. C. with chlorine in the presence of a catalyst containing one or more molybdenum, tungsten or ruthenium compounds.

Abstract: (Trifluoromethyl)pyridine compounds are prepared by contacting (trichloromethyl)pyridine compounds with hydrogen fluoride in the presence of a catalytic amount of a catalyst selected from the group consisting of FeCl.sub.2, FeF.sub.2 and mixtures thereof under liquid phase conditions. The (trifluoromethyl)pyridine compounds are useful as intermediates for the preparation of agricultural chemicals.

Abstract: A method of exchanging a chlorine atom for a fluorine atom at the 2-position of a 2-fluoropyridine compound which comprises contacting a 2-fluoropyridine compound with a substituted or unsubstituted trichloromethyl or dichlorofluoromethyl alpha, beta or gamma picoline compound at a temperature of 50.degree.-250.degree. C. and a pressure of atmospheric to about 100 psig.

Abstract: This invention relates to compositions and the synthesis thereof of novel phosphorous esters of bisphenols which are effective broad spectrum acaricides and insecticides.

Abstract: Novel phosphorous esters of substituted phenols have been found to exhibit insecticidal and miticidal activity.

Abstract: This invention relates to novel hydroxyarylalkyleneaminoaryl carbamate compounds and derivatives thereof and to their preparation. This invention is also directed to insecticidal compositions comprising an acceptable carrier and an insecticidally effective amount of a hydroxyarylalkyleneaminoaryl carbamate compound or derivative of this invention as well as to a method of controlling insects by subjecting them to an insecticidally effective amount of a hydroxyarylalkyleneaminoaryl carbamate compound or derivative of this invention.