Stock material or miscellaneous articles – Composite – Of polycarbonate
Patent
1982-07-01
1984-05-22
Nielsen, Earl A.
Stock material or miscellaneous articles
Composite
Of polycarbonate
428414, 428415, B32B 2738
Patent
active
044502028
ABSTRACT:
A high heat resistant transparency of epoxy resins cured with adducts of trimethoxyboroxine and benzyl alcohol is disclosed to resist intense heat for these transparencies in their use on military and industrial hardware. Additionally, the transparency may include phosphite or phosphate compounds to improve heat resistance, with the phosphate compound in sufficient concentrations to delay gel times such that the phenyl substituted alkyl alcohol may be eliminated from the composition. This transparency may exist in a composite with other layers of transparent material known to those skilled in the art. The epoxy transparency layer is bound to the other transparent layers, in a variety of configurations, using an interlayer of mercaptan terminated resins. These resins greatly improve resistance to moisture permeability in and about the edges of the entire transparency.
REFERENCES:
patent: 2953545 (1960-09-01), Finestone
patent: 3269853 (1966-08-01), English et al.
patent: 3637591 (1972-01-01), Coran
patent: 4294886 (1981-10-01), Uram
patent: 4343928 (1982-08-01), Uram
patent: 4352848 (1982-10-01), Uram
Goodyear Aerospace Corporation
Hudak D. J.
Milliken P. E.
Nielsen Earl A.
Oldham E. W.
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