摘要:
A foundry molding machine utilizing a match-plate and two sets of rubber lined cope and drag slip flasks with two stations; one station assembling one set of flasks with the match-plate therebetween and then rolling over the flask-match-plate assembly to fill the drag with sand while supporting the assembly on the cope and jolting and applying a low pressure preliminary squeeze to the sand within the drag, rolling the assembly back to fill the cope and then supporting the assembly on the sand within the drag for the application of jolt and high pressure squeeze to the sand in both the cope and drag, separating the assembly and indexing the cope and drag vertically separated to a second station while simultaneously indexing the second set of flasks to the first station, holding the sand rammed flasks vertically separated in the other station to permit coring and closing the flasks and stripping the sand cakes thus assembled therefrom to be placed on a bottom board while the second set of flasks are being filled and rammed at the first station; the indexing and roll-over of such flasks being obtained each by a piston-cylinder assembly having controlled stroke deceleration on extension thereof.
摘要:
A method for producing heterocyclic acid anhydrides and pyrimidinediones from the corresponding acids, dicarboxamides, 2,3-and 3,4-pyridinedicarboxamides, and N-monosubstituted 2,3-and 3,4-pyridinedicarboxamides, in which the aforesaid compounds are reacted with lead tetra-acetate in the presence of a suitable anhydrous inert solvent. Heterocyclic acid anhydrides are useful as intermediates in the production of pharmaceuticals, agricultural chemicals, and anthranilic acid esters used as perfume essences and flavoring materials. Pyrimidinediones and ring substituted analogues are useful as agricultural chemicals, especially as herbicides.
摘要:
1. A SOLUTION OF A BENZOTRIAZOLE AND TOLYTRIAZOLE IN BENZENE, CONSISTING OF A MIXTURE OF FROM 2 TO 98 PERCENT OF BENZOTRIAZOLE AND FROM 98 TO 2 PERCENT OF TOLYTRIAZOLE, WHERE THE TOTAL AMOUNT OF TRIAZOLE DISSOLVED IS A FUNCTION OF THE PROPORTION OF BENZOTRIAZOLE AND TOLYTRIAZOLE PRESENT IN THE SOLUTION, AND IS REPRESENTED BY THE SHADED AREA BETWEEN CURVES A AND B OF FIG. 5 OF THE ATTACHED DRAWING.
摘要:
A machine for the production of foundry sand articles including a first piston-cylinder assembly for forming a box, a second such assembly for filling a reservoir with molding sand and clamping such reservoir laterally against such box for the sand to be blown therein, the first assembly disassembling such box and stripping the sand article therein onto a discharge conveyor after the second assembly has withdrawn the reservoir for filling, the first assembly also indexing the conveyor.
摘要:
A foundry molding machine utilizing a match-plate and two sets of rubber lined cope and drag slip flasks with two stations; one station assembling one set of flasks with the matchplate therebetween and then rolling over the flask-match-plate assembly to fill the drag with sand while supporting the assembly on the cope and jolting and applying a low pressure preliminary squeeze to the sand within the drag, rolling the assembly back to fill the cope and then supporting the assembly on the sand within the drag for the application of jolt and high pressure squeeze to the sand in both the cope and drag.
摘要:
THIS INVENTION IS DIRECTED TO ESTER-CONTAINING LIQUID POLYOL COMPOSITIONS AND TO THE METHOD OF PREPARING SAME WHICH COMPRISES CONTACTING AND REACTING AT LEAST ONE POLYCARBOXYLIC ACID OR ACID-PRODUCING COMPOUND AND A MONOCARBOXYLIC FATTY ACID WITH AT LEAST ONE ALIPHATIC OR CYCLOALIPHATIC POLYHYDROXY COMPOUND, E.G. AN ALKYLENEGLYCOL TO OBTAIN AN ESTER-CONTAINING POLYOL INTERMEDIATE AND SUBSEQUENTLY CONTACTING AND REACTING SAID POLYOL INTERMEDIATE WITH AT LEAST ONE EPOXIDIZED FATTY OIL OR EPOXIDIZED FATTY ACID ESTER. THE ESTER-CONTAINING LIQUID POLYOLS ARE USEFUL IN PREPARING FILMS, COATINGS AND PARTICULARLY FOR PREPARING RESIN COATINGS OR ENAMELS OF THE AMINOPLAST AND URETHANE-TYPE.
摘要:
A unit adapted for use in electrophotographic cameras and an electrophotographic process are disclosed where the unit has electrostatic charges and comprises a photosensitive member consisting of a photoconductive layer and an electroconductive layer electrostatically attached to an insulating layer. If the unit is to be used as a film and stored for later exposure, it is sealed in an encasing sheet of the insulating material. If the unit is to be exposed directly, the insulating layer can comprise a master containing an image. During formation of the unit, the photoconductive layer is given a charge of a first polarity and the insulating layer is given a charge of an opposite polarity prior to contacting the two and prior to exposure to radiation. A preferred embodiment utilizes a clear plastic insulating layer with a resistivity of 1014 to 1018 ohms-meters and a dielectric constant of about 2 which in the form of a film contains no image and in the form of a printing element contains an image.
摘要:
THE COMPOSITION OF AQUEOUS PAINT BATHS USED IN ELECTRODEPOSITION OF PAINTS IS CONTROLLED BY MEASURING THE ZETA POTENTIAL. A ZETA POTENTIAL OF AT LEAST -40 MILLIVOLTS IS MAINTAINED.
摘要:
A METHOD FOR CONTROLLING PLANT GROWTH AND NEW COMPOUNDS USED IN SUCH METHOD. THE METHOD INCLUDES THE STEP OF APPLYING THE NEW COMPOUNDS TO THE LOCUS TO BE PROTECTED. THE COMPOUNDS ARE 3-SUBSTITUTED-LUMAZINES, WHERE THE 3-SUBSTITUENT IS A MEMBER OF THE GROUP CONSISTING OF ALKYL GROUPS HAVING FROM 2 TO 8 CARBON ATOMS AND CYCLOALKYL GROUPS HAVING FROM 3 TO 12 CARBON ATOMS.
摘要:
THERE IS PROVIDED A DILATANT LATEX FORMED FROM A PLURALITY OF MONOMERS INCLUDING AT LEAST TWO ALIPHATIC MONOUNSATURATED ESTERS AND A SMALL AMOUNT OF AN ALIPHATIC MONO-UNSATURATED CARBOXYLIC ACID. THE POLYMER IS FORMED BY AN EMULSION POLYMERIZATION TECHNIQUE CARRIED OUT IN THE PRESENCE OF A WATER-SOLUBLE PHOYHYDRIC ALCOHOL WHICH IS A NONSOLVENT OR SUBSTANTIALLY A NONSOLVENT FOR THE POLYMER THERE ARE ALSO PROVIDED NOVEL COATING COMPOSITIONS IN WHICH THIS PODUCT MAY BE USED AS A PAINT VEHICLE COMPONENT OR USED AS AN ADDITIVE TO OTHER LATEX TYPE PAINT VEHICLES TO ADJUST THE RHEOLOGICAL PROPERTIES OF THE SYSTEM.