Abstract: The present invention provides improved adhesion promoters for latex paints. The adhesion promoters are enamines of acetoacetate esters, or substituted acetoacetate esters. The invention also provides two new compounds which are useful as adhesion promoters: 2-butyl-2-ethyl-1,3-propanediol bis(3-amino-2-butenoate) and trimethyl propane tris(3-amino-2-butenoate), and which are stable to hydrolysis on prolonged storage.

Abstract: This invention provides esters of acetobacter acid useful as adhesion promoters for waterborne coatings compositions applied to corroded or rusty metal substrates. The esters of acetoacetic acid also function as a coalescing aid in the coating composition.

Abstract: The present invention provides improved adhesion promoters for latex paints. The adhesion promoters are enamines of acetoacetate esters, or substituted acetoacetate esters. The invention also provides two new compounds which are useful as adhesion promoters: 2-butyl-2-ethyl-1,3-propanediol bis(3-amino-2-butenoate) and trimethyl propane tris(3-amino-2-butenoate), and which are stable to hydrolysis on prolonged storage.

Abstract: A Method and Apparatus for Chemical Delivery Through the Brush used in semiconductor substrate cleaning processes. The chemical solutions are delivered to the core of a brush where the solution is absorbed by the brush and then applied by the brush onto the substrate. This delivery system applies the chemical solutions uniformly to the semiconductor substrate, reduces the volumes of chemical solutions used in a scrubbing process, and helps maintain control of the pH profile of a substrate. This system is described and illustrated in the manner it is used in conjunction with a scrubber that scrubs both sides of a semiconductor substrate.

Abstract: A nozzle configuration capable of handling several cleaning mediums including two sets of discharge nozzles, each of which is associated with a respective cleaning medium. The first nozzle set discharges cleaning medium fluid of relatively higher pressure, while the second nozzle set has nozzles of relatively larger throat diameter for the discharge of relatively lower pressure medium. The nozzles of the second set are arranged coaxially with and downstream from the nozzles of the first set, whereby cleaning medium fluid discharged from the first nozzle set passes through the throats of the nozzles of the second set without substantial obstruction therein.

Abstract: A system for growing plants against a vertical wall such as a fence, partition between apartment balconies or the like. Each support is an integrally formed member with an elongate support portion and a U-shaped hook-portion which fits freely and removably about an upper horizontal portion of the wall. The elongate support portion has a number of vertically spaced-apart openings which access a longitudinal channel formed in the surface of the elongate support portion which rests against the wall. A number of receptacles are provided to receive soil. Each receptacle has a pair of horizontally spaced-apart hooks which can be releasably secured in any one of the openings formed in the supports. The spacing between the supports is fixed solely by securing receptacle between the supports. No fasteners are required to secure the system to the wall, and the system can be readily assembled and disassembled without tools.

Abstract: A rain gutter joint includes upper and lower clamping members between which adjacent ends of a pair of rain gutter troughs are clamped and joined together. Cooperable pin and socket assemblies in the clamping members enable the members to be fastened with conventional fasteners without exposing such fasteners to standing water in the rain gutter. The joint apparatus accommodates thermal expansion and contraction of the rain gutter troughs and yet also provides a superior watertight seal between the troughs.