Highly heat insulated masonry building walls are made economically with required strength yet with less thickness and much less weight than a typical cavity wall by building up a masonry structure of limited thickness having the compressive strength but not all the lateral strength required; erecting metal reinforcing rods at intervals next to a side of the masonry structure; then attaching over it, as by strips of adhesive, preformed stiff panel sections made of a durable lightweight heat insul...

The laundering of fabrics is improved by the use of fumaric acid as a laundry sour. Very satisfactory results are obtained by the use of a laundry sour containing a predominant amount of fumaric acid and a minor amount of a glassy sodium metaphosphate.

Electrolytic caustic cleaning compositions are improved by adding to the composition from 0.33 to 3.0 percent by weight of the dry cleaning composition a monophosphate ester of oxyalkylated alcohol. The phosphate ester improves the cleaning efficiency of the electrolytic process and at the same time, minimizes the formation of spray, mist and the discharge of gases from the bath.

Nonedible parts of shrimp are removed by immersing shrimp in an aqueous solution containing hypochlorite ions or caustic soda.

Brewery pasteurizing waters are automatically treated with chemical compounds, such as slimecides, water conditioners, corrosion inhibitors, and the like according to the present invention. The reservoirs from the pasteurizing waters communicate with sources of the chemical compounds through suitable apparatus capable of delivering the chemicals thereat. Valve means operatively connected to timing means open and close in predetermined sequence to permit delivery of the chemical compounds to the ...

A method is provided for making a polyester having an acid number of less than 1 which involves heating a polyhydric alcohol and a polycarboxylic acid in the absence of a catalyst until an acid number of 30 or less is obtained and then continuing the esterification in the presence of a stannous salt of a carboxylic acid until the acid number is near zero.

A liquid level control device, adapted for use with apparatus for dispensing fluid from a reservoir to a drum or tank, that includes a conduit and an electrical relay encased in a tubular housing and disposed in the reservoir. The conduit is operable to deliver a stored fluid from the reservoir to the drum of a dispensing machine or the like and the relay is responsive to the level of liquid in the reservoir and connected to means for indicating when the liquid falls below a desired level.

A corrosion inhibitor composition for addition to aqueous solutions normally corrosive to metal surfaces is prepared by dissolving a surface active agent and an amine in a mixture of mineral acids.

Water-soluble urethane-urea polymers resistant to moisture absorption in humid atmospheres are prepared by reacting a blend of a polyoxyalkylene glycol and a polyoxyethylene adduct of polyoxypropylene glycol with an excess of organic polyisocyanates to form isocyanate-terminated prepolymers which are chain extended with an organic diamine. The water-soluble polymers are suitable for use as a coating in textile sizing operations, as a water-removable temporary protective coating and may be cast i...

Polymers containing chlorine and nitrogen atoms are prepared by the reaction of a hydrocarbon polymer with nitrosyl chloride or chlorine and nitric oxide. The resulting polymers may be cross-linked with heat to provide polymers having improved physical properties.