US4169915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire resistant foam products
Assignee: Johns Manville Corp
•
Filing: 1978-04-12
•
Granted: 1979-10-02
•
Expires: 1998-04-12
Abstract
Abstract A heat resistant foamed material is disclosed, comprising a cellular foamed resin having associated therewith talc in sufficient quantity to provide enhanced fire resistance to the foam. In various embodiments the talc may be incorporated throughout the foam, concentrated at or near the surface of the foam, incorporated in a facing for the foam which facing comprises a mat (preferably of glass fiber) impregnated with talc, or incorporated into a coating, such as asphalt, with which the facing for the foam is impregnated. The heat resistant faced or unfaced foams incorporating talc are useful as thermal insulations for buildings, particularly for building roofs.
Inventors
- 👤 Glenn A. Heitmann
- 👤 Milton F. Trosper, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:45
CPC Classifications
B; B29; B29C; B29C70/00; C; C08; C08J; C08J9/00; C08J9/0066; C08J9/36; C08J9/365; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/249961; Y10T428/249986; Y10T428/249987; Y10T428/31504; Y10T428/31547
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
60 words
A heat resistant foamed material comprising a cellular foamed resin body having talc incorporated therein, with said talc being concentrated at or near at least one surface of said material, said talc being present as about 5 to 100 phr in the area in which it is concentrated, based on the amount of resin in said area of talc concentration.
Claim 2
Dependent Claim
60 words
A heat resistant foamed material comprising a cellular foamed resin body having talc incorporated therein, with said talc being concentrated at or near at least one surface of said material, said talc being present as about 5 to 100 phr in the area in which it is concentrated, based on the amount of resin in said area of talc concentration.
Claim 3
Dependent Claim
18 words
A heat resistant foamed material as in claim 1 wherein said cellular foamed resin is a phenolic resin.
Claim 4
Dependent Claim
18 words
A heat resistant foamed material as in claim 1 wherein said cellular foamed resin is a polyurethane resin.
Claim 5
Dependent Claim
18 words
A heat resistant foamed material as in claim 1 wherein said cellular foamed resin is a polyisocyanurate resin.
Claim 6
Dependent Claim
45 words
A heat resistant foamed material comprising a cellular foamed resin body having applied to at least one face thereof a facing comprising a mat having incorporated therein talc in an amount of 0.1 to 0.5 parts by weight per part by weight of said mat.
Claim 7
Dependent Claim
45 words
A heat resistant foamed material comprising a cellular foamed resin body having applied to at least one face thereof a facing comprising a mat having incorporated therein talc in an amount of 0.1 to 0.5 parts by weight per part by weight of said mat.
Claim 8
Dependent Claim
18 words
A heat resistant foamed material as in claim 5 wherein said mat is composed primarily of glass fibers.
Claim 9
Dependent Claim
21 words
A heat resistant foamed material as in claim 6 wherein said cellular foamed resin forming said body is a phenolic resin.
Claim 10
Dependent Claim
21 words
A heat resistant foamed material as in claim 6 wherein said cellular foamed resin comprising said body is a polyurethane resin.
Claim 11
Dependent Claim
21 words
A heat resistant foamed material as in claim 6 wherein said cellular foamed resin comprising said body is a polyisocyanurate resin.
Claim 12
Dependent Claim
20 words
A heat resistant foamed material as in claim 6 wherein said talc is distributed throughout the interstices of said mat.
Claim 13
Dependent Claim
30 words
A heat resistant foamed material as in claim 6 wherein said mat comprises glass fibers having thereon a coating comprising a base material with said talc distributed throughout said coating.
Claim 14
Dependent Claim
18 words
A heat resistant foamed material as in claim 11 wherein said mat is composed primarily of glass fibers.
Claim 15
Dependent Claim
30 words
A heat resistant foamed material as in claim 12 wherein said talc is present in said coating as 50 to 400 phc based on the base material of said coating.
Claim 16
Dependent Claim
18 words
A heat resistant foamed material as in claim 12 wherein that base material of said coating comprises asphalt.
Claim 17
Dependent Claim
20 words
A heat resistant foamed material as in claim 12 wherein the base material of said coating comprises a polymeric resin.
Claim 18
Dependent Claim
16 words
A heat resistant foamed material as in claim 1 comprising a board having thermal insulating properties.
Claim 19
Dependent Claim
16 words
A heat resistant foamed material as in claim 5 comprising a board having thermal insulating properties.
Claim 20
Dependent Claim
16 words
A heat resistant foamed material as in claim 11 comprising a board having thermal insulating properties.
References Cited (Backward Citations)
US3174887A
Cited
US3096196A
Cited
US3451842A
Cited
US3625872A
Cited
US3565746A
Cited
US3962154A
Cited
US3802950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |