Abstract: A coating composition contains an organic polyol, a polyepoxide, a polyisocyanate crosslinking agent, and a phenolic resin. The composition is flexible, having an elongation of at least 10 percent when cured. This coating composition is particularly suitable as a primer in preparing substrates with a multilayer coating having good flexibility.

Abstract: A coating composition contains an organic polyol, a polyepoxide, a polyisocyanate crosslinking agent, and a phenolic resin. The composition is flexible, having an elongation of at least 10 percent when cured. This coating composition is particularly suitable as a primer in preparing substrates with a multilayer coating having good flexibility.

Abstract: A novel, safer crib structure is provided herein. This invention provides a crib in which the mattress can be selectively supported at two different heights with respect to the sides of the crib. In one embodiment, the mattress support is a sheet of plywood securely held in a groove in each of the facing end gables. A fixed height back wall is hinged to the end gables. The front wall is a drop side wall vertically slidably secured to the end gables. To change the height of the mattress, the drop side front wall is slidably removed, the sheet of plywood is slid out of one groove and slid into another groove, and the dropside front wall is again slidably secured to the end gables. In a preferred embodiment, a single groove is used to retain the mattress support, but the end gables are affixed to the back wall in such way that one gable is higher than the other gable. Wheels or castors are provided under the shorter gable to provide a level orientation.

Abstract: A table-driven attribute parser for checking the consistency and completeness of attribute assignments in a source program is generated by expressing the syntax rules, semantic restrictions and default assignments as a single context-free grammar compatible with a grammar processor, or parser generator, and processing the context-free grammar to generate an attribute parser including a syntax table and a parse driver. The table-driven attribute parser is incorporated into a compiler.

Abstract: A coating composition contains an organic polyol, a polyepoxide, a blocked polyisocyanate crosslinking agent, and a phenolic resin. The coating composition also can be formulated as a two package coating composition with a free polyisocyanate crosslinking agent. The composition is flexible, having an elongation of at least 10 percent when cured. This coating composition is particularly suitable as a primer in preparing substrates with a multilayer coating having good flexibility.

Abstract: An intervalometer for determining the transit time of an ultrasonic energy pulse through a fluid medium employs an automatic gain control amplifier circuit for amplitude stabilizing the electrical signal derived at a receiving transducer. The automatic gain control circuit tracks both a rapidly increasing and a rapidly decreasing signal amplitude. In various embodiments, synchronous switching can be employed in conjunction with a single amplifier and a plurality of storage elements to rapidly scan a plurality of signal paths and for providing automatic gain control capability on each path. The intervalometer further has a "slipped cycle" capability for accurately determining arrival time when is is known that the signal pulse will be within a certain range of times. In addition, the relative time difference between two arriving signal pulses can be accurately determined using this method so long as the range of time difference is sufficiently small.

Abstract: Aqueous coating compositions consist essentially of: (a) a water-insoluble film-forming polymeric resin; (b) water-insoluble agglomerated particulate beads of urea, melamine or phenol and formaldehyde; (c) polyethers having the formulaH(OC.sub.x H.sub.2x).sub.n OHwhere x is from 2 to 4 and n is a number such that the polyether has a weight average molecular weight of from about 200 to about 1000; (d) pigments; and (e) water. The aqueous coating compositions are especially useful for imparting to metal coil a low gloss pigmented protective finish having good metal marking resistance.

Abstract: Aqueous coating compositions consist essentially of: (a) a water-insoluble film-forming polymeric resin; (b) water-insoluble agglomerated particulate beads of urea, melamine or phenol and formaldehyde; (c) caprolactone-polyol adducts having a weight average molecular weight of from about 250 to about 2500; (d) pigments; and (e) water. The aqueous coating compositions are especially useful for imparting to metal coil a low gloss pigmented protective finish having good metal marking resistance.

Abstract: An aqueous composition useful for forming primer coatings for adhering high molecular weight emulsion polymerized acrylic polymers to metallic substrates is disclosed. The aqueous dispersion comprises a mixture of:(A) a high molecular weight water-insoluble acrylic latex;(B) a carboxylated polyether formed from reacting and then hydrolyzing(1) a polyepoxide having a epoxide equivalency greater than 1,(2) a compound containing at least one phenolic hydroxyl group and containing at least one group hydrolyzable to a carboxyl group.

Abstract: An aqueous composition useful for forming primer coatings for adhering high molecular weight emulsion polymerized acrylic polymers to metallic substrates is disclosed. The aqueous dispersion comprises a mixture of:(A) a high molecular weight water-insoluble acrylic latex;(B) a carboxylated polyether formed from reacting and then hydrolyzing(1) a polyepoxide having an epoxide equivalency greater than 1,(2) a compound containing at least one phenolic hydroxyl group and containing at least one group hydrolyzable to a carboxyl group.