US3867222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making multiple layer light transmissive laminates
Assignee: ROBERTSON-CECO Corp A DE CORP
•
Filing: 1972-12-12
•
Granted: 1975-02-18
•
Expires: 1992-12-12
Abstract
Abstract Multiple layer light transmissive laminates and a method for making them. Such laminates are particularly adapted for use as glazing materials. The laminates retain light transmissivity after exposure to elevated temperatures. The laminates include two or more layers of light transmissive sheets such as glass, polymerized methylmethacrylate and the like, bonded together by means of a thermosetting resin which is cured in the absence of free oxygen and in the absence of oxygen-generating polymerization initiators. The curing is achieved by means of radiation energy delivered through at least one lighttransmissive sheet into the resin.
Inventors
- 👤 William J Plant
- 👤 John J Szwarc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:45
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10165; B32B17/10293; B32B17/10302; B32B17/1055; B32B17/10706; B32B27/00; B32B27/36; B32B27/38; B32B2250/00; B32B2250/42; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
THE METHOD FOR PREPARING MULTIPLE LAYER LIGHT TRANSMISSIVE LAMINATES RESISTANT TO DISCOLORATION AT ELEVATED TEMPERATURES COMPRISING: APPLYING A COATING OF LIGHT TRANSMISSIVE POLYMERIZABLE THERMOSETTING RESIN TO THE CONFRONTING SURFACES OF AT LEAST TWO LIGHT TRANSMISSIVE SHEETS; SEALING THE EDGES OF SAID SHEETS TO PRECLUDE EXPOSURE OR THE SAID RESIN TO AIR; SAID RESIN BEING SUSCEPTIBLE TO CURING ON EXPOSURE TO RADIATION IN THE ABSENCE OF FREE OXYGEN; PASSING RADIATION ENERGY THROUGH ONE OF THE SAID SHEETS INTO THE SAID RESIN UNTIL THE SAID RESIN IS CURED; AND RECOVERING A CURED LIGHT TRANSMISSIVE LAMINATE.
Claim 2
Independent Claim
93 words
THE METHOD FOR PREPARING MULTIPLE LAYER LIGHT TRANSMISSIVE LAMINATES RESISTANT TO DISCOLORATION AT ELEVATED TEMPERATURES COMPRISING: APPLYING A COATING OF LIGHT TRANSMISSIVE POLYMERIZABLE THERMOSETTING RESIN TO THE CONFRONTING SURFACES OF AT LEAST TWO LIGHT TRANSMISSIVE SHEETS; SEALING THE EDGES OF SAID SHEETS TO PRECLUDE EXPOSURE OR THE SAID RESIN TO AIR; SAID RESIN BEING SUSCEPTIBLE TO CURING ON EXPOSURE TO RADIATION IN THE ABSENCE OF FREE OXYGEN; PASSING RADIATION ENERGY THROUGH ONE OF THE SAID SHEETS INTO THE SAID RESIN UNTIL THE SAID RESIN IS CURED; AND RECOVERING A CURED LIGHT TRANSMISSIVE LAMINATE.
Claim 3
Dependent Claim
98 words
In a method of joining a glass safety coverplate to the glass faceplate of a television picture tube by adhesion with a clear laminating plastic, the improvement comprising: introducing between the two said glass plates a polymerizable thermosetting resin composition having plural ethylenic unsaturation sites which can be cured by addition polymerization and containing an ultraviolet radiation sensitizer; sealing the space between the periphery of the said coverplate and the said faceplate to preclude exposure of the said resin to air; exposing the said resin to ultraviolet radiation between said plates until the resin is substantially completely cured.
Claim 4
Dependent Claim
98 words
In a method of joining a glass safety coverplate to the glass faceplate of a television picture tube by adhesion with a clear laminating plastic, the improvement comprising: introducing between the two said glass plates a polymerizable thermosetting resin composition having plural ethylenic unsaturation sites which can be cured by addition polymerization and containing an ultraviolet radiation sensitizer; sealing the space between the periphery of the said coverplate and the said faceplate to preclude exposure of the said resin to air; exposing the said resin to ultraviolet radiation between said plates until the resin is substantially completely cured.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein the said resin is predominantly a polyacrylic polyester resin and is the reaction product of acrylic or methacrylic acid with a polyepoxide resin.
Claim 6
Dependent Claim
29 words
The method of claim 2 wherein the said resin is predominantly a polyacrylic polyester resin and is the reaction production of acrylic or methacrylic acid with a polyepoxide resin.
References Cited (Backward Citations)
US1806846A
Cited
US2293529A
Cited
US2690554A
Cited
US3008995A
Cited
US3373075A
Cited
US3220592A
Cited
US3301743A
Cited
US3558387A
Cited
US3551235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |