Grain retardants

A small amount of particleboard is made with a fire-retardant treatment for use in locations where codes require this material, as in some offices and elevators. Particleboards receive overlay and finishing treatments with ease. Wood veneers, melamine overlays, printed paper overlays, vinyl overlays, foils, and direct grain printing can all be done quite simply. A small amount of particleboard is also made in the form of shaped, molded articles such as furniture parts, paper roU plugs, bmsh bases, and even toilet seats. There is another small increment of particleboard made by the extmsion process. These products are made in small captive operations owned by furniture manufacturers which consume all of this production in their furniture. The extmsion process differs from conventional flat-pressed particleboard in that the wood furnish is forced between two stationary heated surfaces. The mats are formed from one edge and this edge is alternately formed and pushed between the heated platens, which are maintained at a distance equal to the thickness of board produced. This is an old, slow, small-scale process, but is stiU in use in at least one location. 

Sugared cereals are often packaged in aluminum foil or barrier plastic, eg, ethylene vinyl alcohol, laminations to retard water vapor and flavor transmission (see Wheat and other cereal grains). 

Kneen6354 reports that inhibitors obtained from cereal grains have different retarding effects upon the activity of bacterial and pancreatic amylases when examined under comparable conditions. These findings give further evidence for differences in the action of these alpha amylases. 

Circular polarization Changing grain alignment aligned grains acting like retarder... 

As is evident, less than 10% of RP produced annually is used for military pyrotechnics. Its major use is in non-military applications where it is used mainly for the production of safety matches, aluminum phosphide (used for grain fumigation) and flame retardants. The use of RP as a flame retardant in the plastics industry, where it is added at the levels of a few percent to plastics such as poly-... 

Equations (350) and (351) pertain to the reaction on a catalyst 93% Fe203 + 7% Cr203 in the kinetic region. On large catalyst grains used commercially the reaction proceeds with a considerable diffusional retardation. 

Coating of extruded rocket proplnt grains on selected surfaces by inhibiting substances, such as a mixt of Methyl- Ethyl Cellosolve) 18)Dy-namit AG, BritP 788311 (1957) CA 52, 7703 (1958) (AN based expls are coated with surface active agents, such as nitroiso-butylglycerin DNPh, Tetryl, TNT, hexa-mine,etc. Coating may either retard or promote the detonation) 19)R.H.Comyn,... 

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