Patent US4058643A successfully refreshed from Google Patents.
US4058643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant laminates having intumescent adhesive layer comprising shellac
Assignee: ExxonMobil Oil Corp
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Filing: 1976-06-21
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Granted: 1977-11-15
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Expires: 1996-06-21
Abstract
Abstract A fire retardant laminate construction comprising a plastic backing film adhesively secured to an insulation batting material. The adhesive material comprises an intumescent coating, containing one or more fire retardant additives, which will foam and char at high temperatures to form a solid multicellular, fire retardant insulating layer which prevents wicking of the plastic material into the insulation batting.
Inventors
- 👤 Jeffrey D. Marshall
- 👤 Milton C. Kuklies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:13
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B27/00; B32B27/12; C; C09; C09D; C09D5/00; C09D5/18; C09D5/185; C09J; C09J5/00; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24926; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/31504; Y10T428/31551; Y10T428/31641; Y10T428/31844; Y10T442/00; Y10T442/60; Y10T442/674
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
A laminate construction comprising a plastic film layer bonded, with an intumescent adhesive coating composition, to an insulation batting layer, said adhesive composition comprising a mixture of shellac, a phosphoric acid salt and a blowing agent said adhesive coating, when exposed to elevated temperatures, swells by foaming to form a protective multicellular char layer.
Claim 2
Dependent Claim
54 words
A laminate construction comprising a plastic film layer bonded, with an intumescent adhesive coating composition, to an insulation batting layer, said adhesive composition comprising a mixture of shellac, a phosphoric acid salt and a blowing agent said adhesive coating, when exposed to elevated temperatures, swells by foaming to form a protective multicellular char layer.
Claim 3
Dependent Claim
29 words
A laminate in accordance with claim 1 wherein said plastic film is a member selected from the group consisting of polyethylene, polypropylene, polybutene, polyvinylchloride and copolymers and blends thereof.
Claim 4
Dependent Claim
14 words
A laminate in accordance with claim 1 wherein said insulation batting comprises fiber glass.
Claim 5
Dependent Claim
49 words
A laminate, as defined in claim 1, wherein said acid salt comprises a member selected from the group consisting of ammonium phosphate, melamine phosphate, guanylurea phosphate, and urea phosphate; and said blowing agent comprising a member selected from the group consisted of melamine, guanidine, glycerine, urea and chlorinated paraffin.
Claim 6
Dependent Claim
25 words
A laminate in accordance with claim 1 wherein said adhesive comprises a continuous coating at the interface bewteen said film layer and said batting layer.
Claim 7
Dependent Claim
26 words
A laminate in accordance with claim 1 wherein said adhesive comprises a discontinuous coating at the interface of said plastic film layer and said batting layer.
Claim 8
Dependent Claim
17 words
An adhesive coating composition comprising a mixture of shellac, a phosphoric acid salt, and a blowing agent.
Claim 9
Dependent Claim
17 words
An adhesive coating composition comprising a mixture of shellac, a phosphoric acid salt, and a blowing agent.
Claim 10
Dependent Claim
49 words
An adhesive coating composition in accordance with claim 7 comprising a mixture of from about 30 to about 70 weight percent of shellac; from about 10 to about 50 weight percent of said phosphoric acid salt; and from about 1 to about 20 weight percent of said blowing agent.
Claim 11
Dependent Claim
17 words
An adhesive coating composition in accordance with claim 7 wherein said phosphoric acid salt comprises ammonium phosphate.
References Cited (Backward Citations)
GB557545A
Cited
US3157613A
Cited
US3284216A
Cited
FR2104968A1
Cited
US3839239A
Cited
US3915777A
Cited
US3940549A
Cited
US3934066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |