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US 12,215,254 B2Granted
Honeycomb core splice adhesive with improved fire retardancy
AssigneeZephyros, Inc.
InventorsEstelle Huther Ebersohl, Michel Awkal
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Abstract
The invention relates to a heat-activatable foamable honeycomb core splice adhesive having improved fire retardancy, particularly with respect to smoke toxicity and smoke opacity (smoke density).
Claims20
A heat-activatable foamable adhesive comprising
- a) a curable polymer;
- b) a curing agent for the curable polymer;
- c) a blowing agent;
- and
- d) a fire retardant comprising a combination of
- (i) an ammonium polyphosphate
- (ii) a metal hydroxide;
- and
- e) an anti-sagging agent comprising:
- (i) an elastomer comprising a nitrile rubber and/or
- (ii) fibers comprising aramid fibers and/or
- (iii) clay comprising sepiolite, smectite, or a combination thereof:
- wherein the fire retardant does not contain expandable graphite.
10 more elements
Dependencies are inferred from the claim text.