Patent US3853684A successfully refreshed from Google Patents.
US3853684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam composites for filling enclosed spaces
Assignee: Dow Chemical Co
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Filing: 1973-05-21
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Granted: 1974-12-10
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Expires: 1993-05-21
Abstract
Abstract Composites of plastic materials for filling enclosed spaces are prepared by coating the surface of a shaped core material with a layer of expandable resin particles plus a binder such as asphalt. The composite is then placed within the cavity to be filled and heated whereby the rest of the enclosed space is filled with the core material and the expanded particles and binder. The core material may comprise thermostable expandable cellular material. Alternately, the layer of expandable resin particles with the binder can be placed in enclosed spaces in the absence of the shaped core material and expanded to fill the void.
Inventors
- 👤 L Rubens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:09
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/236; C08J9/34; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
A CELLULAR ADHERENT COMPOSITE COMPRISING NO MORE THAN 5.0 PERCENT BY WEIGHT OF PARTICLES OF AN EXPANDED SYNTHETIC RESINOUS MATERIAL SUBSTANTIALLY UNIFORMLU DISPERSED IN A SOLID OR SEMI-SOLID MASTIC BINDER, SAID BINDER CAPABE OF FLOWING UNIFORMLY UPON THE APPLICATION OF BETWEEN 75*C. AND 200*C. HEAT, SAID RESINOUS MATERIAL BEING RESISTANT TO THERMOCOLLAPSE AFTER EXPANSION WHEN HEATED, AT LEAST DURING THE TIME AND TEMPERATURE RANGE REQUIRED TO FLOW SAID BINDER.
Claim 2
Dependent Claim
69 words
A CELLULAR ADHERENT COMPOSITE COMPRISING NO MORE THAN 5.0 PERCENT BY WEIGHT OF PARTICLES OF AN EXPANDED SYNTHETIC RESINOUS MATERIAL SUBSTANTIALLY UNIFORMLU DISPERSED IN A SOLID OR SEMI-SOLID MASTIC BINDER, SAID BINDER CAPABE OF FLOWING UNIFORMLY UPON THE APPLICATION OF BETWEEN 75*C. AND 200*C. HEAT, SAID RESINOUS MATERIAL BEING RESISTANT TO THERMOCOLLAPSE AFTER EXPANSION WHEN HEATED, AT LEAST DURING THE TIME AND TEMPERATURE RANGE REQUIRED TO FLOW SAID BINDER.
Claim 3
Dependent Claim
26 words
A composite as in claim 1 wherein said synthetic resinous material comprises polymonochlorostyrene or polystyrene, partially cross-linked with about 0.02 to 0.2 mole percent of divinylbenzene.
Claim 4
Dependent Claim
33 words
A composite as in claim 1 wherein said binder is a member of the group consisting of asphalt, rubber modified asphalt, epoxy modified asphalt, polyvinyl acetate latex, styrene-butadiene copolymer latex and epoxy resins.
Claim 5
Dependent Claim
19 words
A composite as in claim 1 wherein said composite is adhered to a surface of a thermoplastic resinous film.
Claim 6
Dependent Claim
14 words
A composite as in claim 4 wherein said film is an ethylene-acrylic acid copolymer.
References Cited (Backward Citations)
US3616172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |