Claims
- 1. A transparent composite having resistance to intense heat, comprising:
- a transparent layer of a reaction product of a blend having
- (a) from about 80 to about 100 parts by weight of an epoxy resin;
- (b) from about 5 to about 30 parts by weight of a boroxine having the formula: ##STR12## where R is a compound having from 1 to 18 carbon atoms, and (c) from about 1 part to about 40 parts by weight of an organic phosphorus compound having the following formula: ##STR13## where R.sub.3 is selected from the group consisting of hydrocarbon radicals having from 1 to 24 carbon atoms, halo-substituted organic radicals having from 1 to 24 carbon atoms, and multihalo-substituted organic radicals having from 1 to 24 carbon atoms; and where R.sub.3 may be the same or different radicals;
- where R.sub.4 is selected from the group consisting of all the radicals of R.sub.3, oxygen, and radicals of the formula: --O--R.sub.6, where R.sub.6 is selected from the group consisting of all the radicals of R.sub.3, organo-phosphorus polymeric radicals, and organo-phosphorus esters;
- where R.sub.5 is selected from the group consisting of hydrogen, hydroxyl, oxygen, sulfur, halogens or no radical at all;
- where Z is selected from the group consisting of oxygen, sulfur, or no radical at all; and
- where said transparent blend is contiguously sandwiched between transparent materials selected from the group consisting of acrylic, polycarbonate, polyurethane, silicate glass, and combinations thereof, to produce a composite transparency having an inside ply and an outside ply.
- 2. A transparent composite according to claim 1 wherein said inside ply is composed of a silicone interlayer, a silicate layer, a polyvinyl butyral interlayer, and wherein said outside ply is composed of a silicate layer, a silicone interlayer, and a polycarbonate layer in contiguous relationship to said transparent blend, respectively.
CROSS-REFERENCE
This application is a divisional of my copending application bearing Ser. No. 232,054, filed Feb. 5, 1981, for "TRANSPARENCIES PRODUCED FROM EPOXY RESINS CURED WITH ADDUCTS OF BOROXINES AND INTERLAYERS OF MERCAPTAN RESINS", now U.S. Pat. No. 4,343,928, which in turn is a continuation-in-part application of an application filed on Aug. 28, 1979, bearing Ser. No. 70,390, U.S. Pat. No. 4294886. This application is also a continuation-in-part application of an application filed on Nov. 6, 1980, bearing Ser. No. 204,424, U.S. Pat. No. 4,352,848. Application Ser. No. 204,424 is a continuation-in-part of application Ser. No. 70,390.
US Referenced Citations (6)
Divisions (1)
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Date |
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232054 |
Feb 1981 |
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Continuation in Parts (1)
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70390 |
Aug 1979 |
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