Polymeric fiber webs with binder comprising salt of inorganic acid

摘要

A curable formaldehyde-free binding composition for use with fiberglass is provided. Such curable composition comprises an aldehyde or ketone and an amine salt of an inorganic acid. The composition when applied to fiberglass is cured to form a water-insoluble binder which exhibits good adhesion to glass. In a preferred embodiment the fiberglass is in the form of building insulation. In other embodiments the product is a microglass-based substrate for use in a printed circuit board, battery separator, filter stock, or reinforcement scrim.

主权项

1. A process for binding polymeric fibers comprising:
forming an intermediate comprising an amine salt of an inorganic acid; adding an aldehyde or ketone to the intermediate; forming a binder including the aldehyde or ketone and the intermediate; applying the binder to fibers of a non-woven web of polymeric fibers; and curing the binder while present on the fibers.