Patent US4623592A successfully refreshed from Google Patents.
US4623592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive in preparation of laminates
Assignee: Saint Gobain Vitrage SA
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Filing: 1980-12-05
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Granted: 1986-11-18
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Expires: 2000-12-05
Abstract
Abstract In the manufacture of a 2-ply sheet of the type which includes on one surface thereof a self-healing polymeric material and on the other surface an adhesive polymeric material capable of adhering at elevated temperatures to a glass or plastic surface, the improvement comprising forming said adhesive polymeric material from a blocked polyurethane or a water soluble or water dispersible polyurethane, and preferably from a polyurethane that has blocked NCO groups and is water soluble or water dispersible.
Inventors
- 👤 Gerard Daude
- 👤 Philippe Girard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:36
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/1077; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31565; Y10T428/31598; Y10T428/31601
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
47 words
A glazing laminate comprising a self-healing plastic material adhered to a glass or plastic ply by a transparent, humidity-resistant adhesive comprising a thermoplastic polyurethane which is formed by the in situ decomposition of a blocked polyurethane having an excess of blocked isocyanate groups over active hydrogen-containing groups.
Claim 2
Dependent Claim
47 words
A glazing laminate comprising a self-healing plastic material adhered to a glass or plastic ply by a transparent, humidity-resistant adhesive comprising a thermoplastic polyurethane which is formed by the in situ decomposition of a blocked polyurethane having an excess of blocked isocyanate groups over active hydrogen-containing groups.
Claim 3
Dependent Claim
19 words
A glazing laminate according to claim 1 wherein said adhesive is sufficiently thick to function as an energy absorber.
Claim 4
Dependent Claim
117 words
A glazing laminate comprising a self-healing plastic material adhered to a glass or plastic ply by a transparent, humidity resistant, thermoplastic polyurethane adhesive, the polymeric chains of which include: (A) a nonionic polyurethane chain segment formed from a polyisocyanate monomer and a mixture of polyols; and (B) a terminal chain segment of the formula ##STR1## wherein X is NH or O; wherein said terminal chain segment is formed from an isocyanate group terminating said polyurethane chain segment and an active hydrogen-containing group derived from the surface of said ply, said material or said polyurethane chain segment; wherein the mole ratio of said terminal chain segments to active hydrogen-containing groups in said polyurethane adhesive is greater than 1.01.
Claim 5
Dependent Claim
117 words
A glazing laminate comprising a self-healing plastic material adhered to a glass or plastic ply by a transparent, humidity resistant, thermoplastic polyurethane adhesive, the polymeric chains of which include: (A) a nonionic polyurethane chain segment formed from a polyisocyanate monomer and a mixture of polyols; and (B) a terminal chain segment of the formula ##STR1## wherein X is NH or O; wherein said terminal chain segment is formed from an isocyanate group terminating said polyurethane chain segment and an active hydrogen-containing group derived from the surface of said ply, said material or said polyurethane chain segment; wherein the mole ratio of said terminal chain segments to active hydrogen-containing groups in said polyurethane adhesive is greater than 1.01.
Claim 6
Dependent Claim
29 words
A glazing laminate according to claim 1 or 3 selected from the group consisting of glazings for transportation vehicles or for the building industry, masks, screens, lenses, and eyeglasses.
Claim 7
Dependent Claim
72 words
A pre-formed flexible polymeric sheet having optical properties and capable of being used in preparing a glazing laminate, one surface of said sheet comprising a self-healing thermoset material, and the other surface of said sheet comprising a thermoplastic polyurethane including blocked isocyanate groups, wherein the mole ratio of said blocked isocyanate groups to active hydrogen-containing groups in said polyurethane is greater than one, said wherein said polyurethane is non-tacky at room temperature.
Claim 8
Dependent Claim
72 words
A pre-formed flexible polymeric sheet having optical properties and capable of being used in preparing a glazing laminate, one surface of said sheet comprising a self-healing thermoset material, and the other surface of said sheet comprising a thermoplastic polyurethane including blocked isocyanate groups, wherein the mole ratio of said blocked isocyanate groups to active hydrogen-containing groups in said polyurethane is greater than one, said wherein said polyurethane is non-tacky at room temperature.
Claim 9
Dependent Claim
16 words
A polymeric sheet according to claim 5, wherein said polyurethane is water soluble or water dispersible.
Claim 10
Dependent Claim
12 words
A sheet according to claim 6, wherein said polyurethane includes salt groups.
Claim 11
Dependent Claim
20 words
A sheet according to claim 7, wherein said salt groups are carboxylic acid salts or acid addition salts of amines.
Claim 12
Dependent Claim
107 words
A glazing laminate according to claim 3 wherein said polyurethane adhesive consists essentially of (A), (B), and (C), where: (C) is a chain extended segment, derived from a chain extruder having a first and a second active hydrogen-containing group, wherein said first active group forms a bond with (A); and said terminal segment is formed from an isocyanate group terminating said polyurethane segment and an active hydrogen containing group derived from the surface of said ply, said material or said second active group of said chain extended segment; wherein the mole ratio of said terminal segments to said chain extended segments is about 1.01 to about 3.
Claim 13
Dependent Claim
16 words
A glazing laminate according to claim 9, wherein said chain extended segment includes an ionic group.
Claim 14
Dependent Claim
26 words
A glazing laminate according to claim 10, wherein said ionic group is a basic salt of a carboxylic acid or an acidic salt of an amine.
Claim 15
Dependent Claim
119 words
A flexible preformed sheet, having optical properties, comprising a self-healing, plastic ply adhered to a thermoplastic ply which is non-tacky at room temperature and which comprises a polyurethane consisting essentially of: (A) a nonionic polyurethane segment formed from a polyisocyanate monomer and a mixture of polyols; (B) a chain extended segment, derived from a chain extender having a first and a second active hydrogen-containing group, wherein said first active group forms a bond with said nonionic polyurethane segment; and (C) a blocked isocyanate segment formed from an isocyanate group terminating said polyurethane segment and a blocking agent; wherein the mole ratio of said blocked segments to said chain extended segments in said polyurethane is about 1.01 to about 3.
Claim 16
Dependent Claim
119 words
A flexible preformed sheet, having optical properties, comprising a self-healing, plastic ply adhered to a thermoplastic ply which is non-tacky at room temperature and which comprises a polyurethane consisting essentially of: (A) a nonionic polyurethane segment formed from a polyisocyanate monomer and a mixture of polyols; (B) a chain extended segment, derived from a chain extender having a first and a second active hydrogen-containing group, wherein said first active group forms a bond with said nonionic polyurethane segment; and (C) a blocked isocyanate segment formed from an isocyanate group terminating said polyurethane segment and a blocking agent; wherein the mole ratio of said blocked segments to said chain extended segments in said polyurethane is about 1.01 to about 3.
Claim 17
Dependent Claim
17 words
A flexible preformed sheet according to claim 12 wherein said chain extended segment includes an ionic group.
Claim 18
Dependent Claim
27 words
A flexible preformed sheet according to claim 13 wherein said ionic group is a basic salt of a carboxylic acid or an acidic salt of an amine.
Claim 19
Dependent Claim
20 words
An assembly comprising a glass or plastic ply contacted with the adhesive surface of a sheet according to claim 5.
Claim 20
Dependent Claim
46 words
A glazing laminate comprising a glass or plastic substrate containing active hydrogen groups bonded to a self-healing thermoset polyurethane material by a transparent humidity resistant thermoplastic polyurethane adhesive wherein isocyanate groups in said thermoplastic polyurethane adhesive have reacted with the active hydrogen groups in said substrate.
Claim 21
Dependent Claim
46 words
A glazing laminate comprising a glass or plastic substrate containing active hydrogen groups bonded to a self-healing thermoset polyurethane material by a transparent humidity resistant thermoplastic polyurethane adhesive wherein isocyanate groups in said thermoplastic polyurethane adhesive have reacted with the active hydrogen groups in said substrate.
Claim 22
Dependent Claim
27 words
The glazing laminate of claim 6 wherein said self-healing thermoset polyurethane material contains active hydrogen groups which have reacted with isocyanate groups in said thermoplastic polyurethane adhesive.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |