Bulletproof laminated safety glass and process for production
First Claim
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1. A bulletproof laminated safety glass comprising:
- (1) a silicate glass pane of at least 6 mm thickness provided for the side of the laminated safety glass endangered by bombardment, or an acrylic glass pane of at least 12 mm thickness; and
(2) a polycarbonate pane of at least 1.5 mm thickness which is thin relative to the silicate glass or acrylic pane, and which is provided for the rear side of the combination said glass pane and said polycarbonate pane being secured together along their planar surface area by an adhesive layer, which is produced in situ by hardening at temperatures between +10° and
+50°
C. of a binder which comprises in the uncured state at least 50% by weight from 2-ethylhexylmethacrylate, 0.2 to 2.0% by weight of the binder of at least one alkylacylperoxide and 0.005 to 0.5% by weight of the binder at least a compound which contains a labile halogen atom, as a solution in a phlegmatization agent, 0.01 to 10 ppm Cu++ -ions in the form of a copper salt, soluble in the binder, and 0.05 to 3% by weight of said binder of a ω
-mercaptoalkyl-trialkoxy silane.
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Abstract
Laminated safety glass wherein the adhesive binder used contains at least 50% by weight of 2-ethylhexylmethacrylate, 0.2 to 2% by weight of the binder of at least one alkylacyl peroxide and 0.005 to 0.5% by weight of the binder of at least one compound which contains a labile halogen atom, as solution in a phlegmatization agent, 0.01 to 10 ppm Cu++ -ions in the form of a copper salt soluble in the binder and 0.05 to 3% by weight of the binder of a ω-mercaptoalkyltrialkoxy silane.
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Citations
16 Claims
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1. A bulletproof laminated safety glass comprising:
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(1) a silicate glass pane of at least 6 mm thickness provided for the side of the laminated safety glass endangered by bombardment, or an acrylic glass pane of at least 12 mm thickness; and (2) a polycarbonate pane of at least 1.5 mm thickness which is thin relative to the silicate glass or acrylic pane, and which is provided for the rear side of the combination said glass pane and said polycarbonate pane being secured together along their planar surface area by an adhesive layer, which is produced in situ by hardening at temperatures between +10° and
+50°
C. of a binder which comprises in the uncured state at least 50% by weight from 2-ethylhexylmethacrylate, 0.2 to 2.0% by weight of the binder of at least one alkylacylperoxide and 0.005 to 0.5% by weight of the binder at least a compound which contains a labile halogen atom, as a solution in a phlegmatization agent, 0.01 to 10 ppm Cu++ -ions in the form of a copper salt, soluble in the binder, and 0.05 to 3% by weight of said binder of a ω
-mercaptoalkyl-trialkoxy silane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16)
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9. A process for the production of a laminated safety glass comprising providing a silicate glass pane of at least 6 mm thickness or an acrylic glass pane of at least 12 mm thickness for the side of the laminated safety glass endangered by bombardment, and further providing a polycarbonate pane of at least 1.5 mm thickness which is thin relative to the silicate glass or acrylic pane, and which is provided for the rear side of the laminates safety glass, positioning said panes in parallel relationship and connecting said panes by means of an adhesive layer, which is an adhesive layer produced in situ by hardening of a binder comprising at least 50% by weight 2-ethylhexylmethacrylate, 0.2 to 2.0% by weight of at least one alkylacylperoxide and 0.005 to 0.5% by weight of at least a compound which contains a labile halogen atom, as a solution in a phlegmatization agent, 0.01 to 10 ppm Cu++ -ions in the form of a copper salt, soluble in the binder and 0.05 to 3% by weight of a ω
- -mercaptoalkyl-trialkoxy silane, all weight being by weight of the binder, said binder hardening at a temperature between +10 and +50°
C.
- -mercaptoalkyl-trialkoxy silane, all weight being by weight of the binder, said binder hardening at a temperature between +10 and +50°
Specification