(r) a compounding material used to produce gas by chemical or physical action, or both, in the manufacture of hollow or cellular articles.
Mixed with a compounded into many formulations, these ‘blowing agents' form gases to create a cellular structure, such as sponge rubber.
Mixed with a rubber compound, this material decomposes when heated to form the gases that create sponge rubber.
A gas or a substance capable of producing a gas used in making foamed materials.
An expanding agent used to produce a gas by chemical or thermal action, or both, in manufacture of hollow or cellular materials including closed cell thermal insulations.
A substance incorporated in a mixture for the purpose of producing foam. For polyurethanes, this is usually either carbon dioxide generated from the diisocyanate/water reaction or introduced as liquid CO2 or a low boiling organic liquid volatilized by the heat of the polyurethane-forming reactions.
A gas, a volatile liquid, or a chemical that during the foaming process generates gas. The gas creates bubbles or cells in the plastic structure of a foam.
A substance incorporated in the polymerising reaction mixture between a di-isocyanate and a polyol to form gas bubbles, thereby producing foam.
Various chemicals used in the manufacture of cellular rubber products that cause the material to expand by giving off a gas when they are exposed to heat.
Chemical to make sponge rubber, forming the cells by release of gas.