One part epoxy-based composition
AssigneeZephyros, Inc.
InventorJason Walker
Life of this patent
Estimating the term…
Abstract
The present teachings relate generally to a one part room temperature curable composition. e.g., a one-part epoxy-based adhesive precursor composition. The composition may include an epoxy resin, and a filler. The composition may include a flame retardant sufficient so that when the adhesive precursor composition is cored, it meets applicable requirements for flame retardancy of 14 C.F.R. § 25.853 for aircraft inferior cabins. An amount of a curing agent may be included. The selection of the epoxy resin, curing agent, or both, may afford curing with or without the need for an application of heat. The epoxy resin, the filler, any flame retardant and the curing agent are admixed to define a substantially homogenous admixture, thereby defining a mass of adhesive precursor.
Claims16
A one-part epoxy-based adhesive precursor composition, comprising:
- a. at least about 3 parts by weight of an epoxy resin component, which includes a first epoxy and a second epoxy;
- b. at least about 10 parts by weight of a filler;
- c. an amount of a flame retardant sufficient so that when the one-part epoxy-based adhesive precursor composition is cured to a degree of cure of at least about 50%, a resulting cured adhesive composition exhibits sufficient flame retardancy to meet the requirements of one or more of FAR 25.853 or FAR 25.856;
- and
- d. an amount of a curing agent sufficient to cause, at room temperature, curing of the one-part epoxy- based adhesive precursor composition to a degree of cure of at least about 50%, when the one-part epoxy-based adhesive precursor composition is subjected to a curing condition over a period not to exceed about 8 hours, while retaining a working life, as measured per ASTM D1338-99(2011), of at least 1 hour;
- wherein the epoxy resin component, the filler, the flame retardant, and the curing agent are admixed to define a substantially homogenous admixture, thereby defining a mass of the one-part epoxy-based adhesive precursor composition;
- and
- wherein the flame retardant is present in the one-part epoxy-based adhesive precursor composition in an amount of about 15% by weight to about 55% by weight.
Dependencies are inferred from the claim text.