US4556600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated glasses using a non-thermoplastic adhesive insert layer
Assignee: Saint Gobain Vitrage SA
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Filing: 1982-09-30
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Granted: 1985-12-03
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Expires: 2002-09-30
Abstract
Abstract A plastic adhesive layer used as an insert layer in laminated glasses and the laminated glasses containing the insert layer, the adhesive layer comprising a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between 0.2 and 0.6. The adhesive layer is particularly useful in soundproofing glasses and in safety glasses such as bulletproofing glasses.
Inventors
- 👤 Franz Kraemling
- 👤 Achim Muller
- 👤 Ludwig Linden
- 👤 Helmer Raedisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818; C08G18/7831; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10064; B32B17/1055; B32B17/1077; B32B27/00; B32B27/36; B32B7/00; B32B7/04; B32B7/12; C08G18/28; C08G18/40; C08G18/48; C08G18/4829; C09; C09J; C09J175/00; C09J175/04; B32B2315/00; B32B2315/08; B32B2367/00; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T428/31616; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
46 words
A laminated glass having a non-thermoplastic adhesive insert layer comprsing a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45.
Claim 2
Dependent Claim
46 words
A laminated glass having a non-thermoplastic adhesive insert layer comprsing a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45.
Claim 3
Dependent Claim
21 words
A laminated glass according to claim 1 wherein the thickness of the adhesive insert layer is at least about 0.5 mm.
Claim 4
Dependent Claim
21 words
A laminated glass according to claim 1 wherein the thickness of the adhesive insert layer is greater than about 1 mm.
Claim 5
Dependent Claim
21 words
A laminated glass according to claim 1 wherein the adhesive insert layer exhibits a Shore Hardness of less than about 20.
Claim 6
Dependent Claim
21 words
A laminated glass according to claim 1 wherein the adhesive insert layer exhibits a Shore Hardness of less than about 10.
Claim 7
Dependent Claim
76 words
A safety glass comprising a glass sheet and a polycarbonate sheet bonded by an adhesive insert layer comprising a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45, the adhesive insert layer having a thickness of at least about 1.5 mm and a Shore Hardness of less than about 20.
Claim 8
Dependent Claim
76 words
A safety glass comprising a glass sheet and a polycarbonate sheet bonded by an adhesive insert layer comprising a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45, the adhesive insert layer having a thickness of at least about 1.5 mm and a Shore Hardness of less than about 20.
Claim 9
Dependent Claim
53 words
A safety glass according to claim 6 wherein the numerical ratio of the isocyanate groups to the hydroxyl groups in the adhesive insert layer is between about 0.25 and 0.45 and the adhesive insert layer has a thickness of at least about 2 mm and a Shore Hardness of less than about 10.
Claim 10
Dependent Claim
75 words
A bulletproof safety glass according to claim 6 wherein a glass sheet of about 8 mm in thickness and a polycarbonate sheet of about 2 mm in thickness are bonded by an adhesive insert layer of about 2 mm in thickness, further comprising a glass sheet of about 3 mm in thickness bonded to the glass sheet of about 8 mm in thickness by a polyvinyl butyral insert layer of about 1.5 mm in thickness.
Claim 11
Dependent Claim
68 words
A soundproofing glass comprising at least a glass layer and a transparent plastic adhesive layer having high viscoelastic properties comprising a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45, the adhesive layer having a thickness of at least about 1 mm.
Claim 12
Dependent Claim
68 words
A soundproofing glass comprising at least a glass layer and a transparent plastic adhesive layer having high viscoelastic properties comprising a polyfunctional polyol component and a polyfunctional isocyanate component, wherein the polyol component is present in considerable excess and the numerical ratio of the isocyanate groups to the hydroxyl groups is between about 0.25 and 0.45, the adhesive layer having a thickness of at least about 1 mm.
Claim 13
Dependent Claim
21 words
A soundproofing glass according to claim 9 wherein the adhesive layer has a thickness between about 0.5 mm and 12 mm.
Claim 14
Dependent Claim
15 words
A soundproofing glass according to claim 9 wherein the adhesive layer bonds two glass sheets.
Claim 15
Dependent Claim
21 words
A soundproofing glass according to claim 9 wherein two of the adhesive layers bond two glass sheets to a polycarbonate sheet.
Claim 16
Dependent Claim
22 words
A sound proofing glass according to claim 9 wherein two of the adhesive layers bond two polycarbonate sheets to a glass sheet.
Claim 17
Dependent Claim
28 words
A soundproofing glass according to claim 9 wherein the adhesive layer bonds two laminated glasses, each comprising two glass sheets bonded by a polyvinyl butyral adhesive insert layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |