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US 4,992,481 AGranted
Fire retardant elements
AssigneeBayer Aktiengesellschaft
InventorsWulf von Bonin, Ulrich von Gizycki
Life of this patent
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Abstract
The new fire retardant elements are characterized in that they are foam mouldings which are elastic in the moist state and contain a liquid flameproofing impregnation, and the fire retardant elements are protected against moisture loss before installation and solidify on drying after installation. A process for the production of such fire retardant elements and mouldings which comprise such fire retardant elements are likewise described and claimed.
Claims11
A fire retardant element, which is
- (a) a foam moulding which is elastic in the moist state and
- (b) contains a liquid flameproofing impregnation, where one or both of (a) and (b) solidify after installation, and the fire retardant element is protected against loss of moisture before installation.
A process for the production of a fire retardant element, in which
- (a) a foam moulding which is elastic in the moist state is impregnated with
- (b) a liquid flameproofing impregnation at temperatures in the range of 5 to 90.degree. C., and the fire retardant element is protected against loss of moisture before installation.
A moulding, which essentially comprises
- (a) a foam moulding which is elastic in the moist state and
- (b) a liquid flameproofing impregnation, where (a) and/or (b) solidify on drying after installation, and the moulding is protected against loss of moisture before installation.
Dependencies are inferred from the claim text.