PURPOSE:To solidify efficiently an aqueous soln. of sulfuric acid by adding a polymer of acrylic acid or a copolymer contg. a specific amount of acrylic acid to the aqueous soln. of sulfuric acid and by mixing them. CONSTITUTION:Acrylic acid, a salt thereof acrylamide is homopolymerized to manufacture a polymer, or >=50wt% of said monomer is copolymerized with <=50wt% other copolymerizable monomer...

A winding machine for automatic spool exchange has a spool switching element with alternately operating clamping pins for receiving spool sleeves, a traverse motion guiding element, an element for removing threads from the traverse motion guiding element and their displacing from a traverse motion region to a knot winding region, and elements shiftable during spool exchange to their operational po...

1. Process for the production of a cast tyre reinforced with sheathed cord threads (7) in which first of all the tyre reinforcement (12) is prefabricated by winding a continuous cord thread (7) in an alternating manner on to a core (6, 10), the alternation being controlled in such a manner that, at the turning points of the alternation, the continuous cord thread (7) is guided for a certain time i...

Process for preparing a food flavour comprises inactivating yeast and carrying out enzymatic degradation of biopolymers in conjunction with fermentation with micro-organisms. Preferably the enzymatic degradation is carried out with more than one enzyme either simultaneously or sequentially.

Expandable urethane compositions adapted for use as sealants. The composition is characterized in comprising a first component comprising a mixture of a hydroxy functional liquid reactive elastomer and metal salts of organic sulfonates and a second component comprising polyisocyanate. Optionally, the composition may additionally comprise pigments and/or fillers. The foam sealant exhibits excellent...

A sofa bed mechanism comprising a foldable bed frame having side and end rails and a back support slat extending between the side rails across the width of the bed frame at a position corresponding to the upper back area of a user in a sleeping position. The back support slat is bowed upwardly in its natural state and moves downwardly under load to yieldably resist the load and exert an outwardly ...

The invention relates to a method wherein uncured urethane formulations are bonded to a cured rubber or synthetic rubber substrate in such a manner so as to provide greater bonding strength than has been achieved previously in urethane formulation bonding to rubber or synthetic rubber. The substrate is cleaned, a coating of a cyanoacrylate adhesive is applied, followed by a liquid or paste urethan...

Apparatus for continuously measuring the movement of a line L or other rod-like member insertable into a subterranean well comprises a base 11 attached to a lubricator assembly 4 or other rigid structure, a primary support 15 carrying a guide roller 31, a secondary support 20 carrying a measuring roller, resilient means 24 for holding the measuring roller against the line, means for counting the r...

Vesiculated polymer beads containing a pigment have in the past been produced employing a process using a polyamine base but this has introduced yellowing of the beads and avoidance of its use is desirable. Accordingly a process has been developed which produces vesiculated polymer beads which have a reduced tendency to be yellow. The new process involves forming an oil phase of the polyester resi...

An electronic device for an automobile is roughly divided into individual parts and control circuit elements which are mounted in a casing divided into two compartments, according to the present invention. The individual parts are arranged in one compartment and are covered with silicone rubber to improve their water resistance. The control circuit elements are arranged in the other compartment an...

A process for manufacturing amorphous alloy powders is provided, wherein, a high-speed fluid jet is blown against a flowing melt of an alloy which can be formed into amorphous powders, thereby powerizing the melt and rapidly cooling and solidifying the melt. Use is made of an action tube in which pressure is reduced and turbulent flow is caused so as to increase the cooling rate of the powderized ...

PURPOSE:To reduce smoke in exhaust gas, eliminate foul and irritating odor of exhaust gas and aromatize 2-cycle engine oil compsn., by adding a terpene compd. to the compsn. CONSTITUTION:A terpene compd. is added to a 2-cycle engine oil compsn. in an amt. of 2-70wt%. Terpene compds. which have good effect and are readily available are 10-C d-limonene, alpha-terpineol and 1,8-cineol. When the amoun...

An alarm system used in conjunction with a circuit breaker panel box indicating the presence of an overload condition. At least one sensor is provided in proximity with the circuit breaker box but is not physically connected thereto. This sensor senses various parameters which are inherent in an overload condition or which are produced by various circuitry connected to the circuit breaker which ar...

A transformer has an insulator interposed between respective primary and secondary coils wound on a coil bobbin which has an axial winding part and opposing radially extending flanges. The insulator is made from a continuous sheet of material which is corrugated to provide an insulating base having a width larger than the width of the winding part of the coil bobbin and from a continuous, plastic ...

A dental cement composition comprises a first ingredient containing as the main component a metal oxide and a second ingredient capable of reacting with the first ingredient to form a set mass, and further contains a tannic acid derivative that is sparingly soluble in water and a reducing agent that is soluble in water. The instant cement composition may contain an aluminum salt to improve the pro...

This coil, intended most particularly for automotive vehicles, is characterized by the fact that a support (5) includes means (9, 10, 14, 14a) for maintaining and positioning primary and secondary windings of the coil, which cooperate with respective complementary means on each winding form, as well as different electrical connections (6, 7) of low and high tension.

A process for the treatment of a spent hydrochloric acid solution containing dissolved iron, zinc, and minor amounts of heavy metals to remove such dissolved metals from the solution, which process comprises contacting said solution with metallic iron in a first stage, whereby trivalent iron present in the solution is reduced to divalent iron and certain of said heavy metals may be reduced to elem...

A latch mechanism for use in a reclining seat assembly including a seat cushion structure and a tiltable seat back structure, comprising a seat cushion bracket member (12) secured to the seat cushion structure, a seat back bracket member (11) tiltable together with the seat back structure with respect to the seat cushion bracket member (12) and having a toothed portion (14), a locking member (15) ...

There are described compounds of formula in which n is 0, 1 or 2, R<1> is a hydrocarbyl group optionally substituted with an optionally substituted phenyl group and containing from 5 to 30 carbon atoms, R<2> is optionally substituted phenyl or C1-10alkyl optionally substituted by one or more substituents selected from optionally protected hydroxyl, optionally protected carboxyl, nitrile,...

In a fluidised-bed apparatus having approximately vertical heat exchange surfaces, wherein zones are provided which can be subjected separately to a flow of fluidising gas below the heat exchange surfaces, control of the heat transfer to the heat exchange surfaces is obtained by the provision of approximately vertical, louvre-like internals at a distance from the heat exchange surfaces above the z...