FIRE RESISTANT GLAZINGS

摘要

Optically clear films of a polymer and copolymer of vinyl chloride comprise a boron compound which is soluble in an organic medium. The films can be laminated between glass panes to produce fire resistant laminated glazings. Alkyl borates, boroxines, polyborates and biborates may be useful. The addition of the boron compound improves the fire resistance of the glazings. These glazings may be produced inexpensively using conventional autoclave lamination processes.