Sandwich glasses

Stock material or miscellaneous articles – Composite – Of quartz or glass

Patent

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Details

428440, 428441, B32B 1710, C03C 2712

Patent

active

055477623

ABSTRACT:
A sandwich glass is disclosed containing a thermoset resin layer interposed between glass plates, wherein the thermoset resin layer, prior to thermosetting, contains an uncured resin composition containing:
(a) an organic peroxide,
(b) an ethylene-vinyl acetate copolymer, and
(c) at least one compound selected from the group
consisting of at least one acryloxy or methacryloxy group-containing compound and a hydrocarbon resin having a ratio of hydrogenation .gtoreq.91%;
wherein the at least one acryloxy or methacryloxy group-containing compound is selected from the group consisting of 1-methyl-1,3-dimethacryloxypropane, 2,2-dimethyl-1,3-diacryloxypropane, 2,2-dimethyl-1,3-dimethacryloxypropane, 2-hydroxy-1-acryloxy-3-methacryloxypropane, 2-hydroxy-1,3-dimethacryloxypropane, 1-hydroxy-2-methyl-1,3-diacryloxypropane and 1-hydroxy-2-methyl-1,3-dimethacryloxypropane and the ethylene-vinyl acetate copolymer contains vinyl acetate in an amount of 10-50% by weight. The sandwich glass of the present invention results in an improved resistance to yellowing and less perspective distortion.

REFERENCES:
patent: 3622440 (1971-11-01), Snedeker et al.
patent: 3666614 (1972-05-01), Snedecker et al.
patent: 4303739 (1981-12-01), Beckmann et al.
patent: 4511627 (1985-04-01), Tanuma et al.
patent: 4600627 (1986-07-01), Honda et al.
patent: 5094918 (1992-03-01), Niwa et al.

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