US3607544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture of steam, alcohol and polyalkyleneimine as adhesion promoter for laminates
Assignee: FMC Corp
•
Filing: 1969-04-30
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Granted: 1971-09-21
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Expires: 1989-04-30
Abstract
Abstract A mixture of steam and a volatile alcohol incorporating an additive proportion of a polyalkyleneimine, a method of laminating using this mixture and a laminate prepared therewith, are disclosed herein.
Inventors
- 👤 Richard J Earner
- 👤 Raymond A Thomas Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:45
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/32; B32B37/00; B32B37/06; B32B37/10; B32B2255/00; B32B2255/10; B32B2255/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
The method of claim 1 wherein both of said sheets have thermoplastic surfaces in opposed relationship to each other and said thermoplastic surfaces are heat softened by passing said surfaces in proximity to a stationary heated member prior to contacting one another.
Claim 2
Dependent Claim
13 words
The method of claim 1 wherein the volatile monohydroxy alcohol is benzyl alcohol.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein the polyalkyleneimine is polyethyleneimine.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein at least one of said two sheets contains a hydrophilic cellulosic sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |